Icom ic r20 инструкция на русском языке

• Page 1: Icom IC-R20

  INSTRUCTION MANUAL iR20 COMMUNICA TIONS RECEIVER This device complies with Part 15 of the FCC rules. Operation is sub- ject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. W ARNING: MODIFICA TION[…]

• Page 2: Icom IC-R20

  i FOREWORD Thank you for purchasing this Icom product. The IC-R20 COM — MUNICA TIONS RECEIVER is designed and built with Icom’s supe- rior technology and craftsmanship. With proper care, this product should provide you with years of trouble-free operation. We want to take a couple of moments of your time to thank you for making your IC-R20 your r[…]

• Page 3: Icom IC-R20

  R W ARNING! NEVER operate the receiver with an earphone, headphones or other audio accessories at high volume levels. Hearing experts advise against continuous high volume operation. If you experience a ringing in your ears, reduce the volume level or discontinue use. R W ARNING! NEVER connect the receiver directly to an AC outlet. This may pose a […]

• Page 4: Icom IC-R20

  iii SUPPLIED ACCESSORIES q Antenna ………………………………………………………1 w Belt clip (MB-98) …………………………………………1 set e Battery spacer ………………………………………………1 r Hand strap …………………………………………………1 t Battery pack* (BP-206) ……[…]

• Page 5: Icom IC-R20

  iv T ABLE OF CONTENTS 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 FOREWORD …………………………………………… i IMPORT ANT …………………………………………… i EXPLICIT DEFINITIONS ………………………….. i PRECAUTION ………………………………………… ii SUPPLIED ACCESSORIES ……………………[…]

• Page 6: Icom IC-R20

  I QUICK REFERENCE GUIDE ■ Preparations D Batteries installation q Remove the battery cover from the receiver . w For alkaline battery use, attach the supplied battery spacer . e Install 3 R6 (AA) size alkaline batteries. • Be sure to observe the correct polarity . Keep the battery contacts clean to avoid rust or poor contact. It’s a good idea[…]

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  II QUICK REFERENCE GUIDE D Belt clip Conveniently attaches to your belt. Attach the belt clip with the supplied screws using a phillips screwdriver . D Swivel belt clip (Option) The optional swivel belt clip (MB-86) is useful for easy attaching/detaching the receiver to/from the belt. q Attach the stopper with the supplied screws using a phillips s[…]

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  III QUICK REFERENCE GUIDE To remove: r T urn the receiver upside down, and then lift to release the receiver from the belt clip as shown at upper right. D D Antenna Insert the supplied antenna into the antenna connector and screw down the antenna as shown at right. NEVER hold the antenna when carrying the receiver . ✔ For your information Third-p[…]

• Page 9: Icom IC-R20

  IV QUICK REFERENCE GUIDE D Charging the battery q Install the battery pack (BP-206). w Plug the AC adaptor into an AC outlet. e Tu rn OFF the receiver , then insert the adaptor plug into the [DC] jack of the receiver . R R W ARNING!: NEVER attempt to charge any other batteries. Because the IC-R20 can charge the BP-206 only . Keep the jack cover att[…]

• Page 10: Icom IC-R20

  V QUICK REFERENCE GUIDE D Basic operation 1. T urning ON the receiver ➥ Push [POWER] for 1 sec. to turn the power ON. 2. Adjusting audio level ➥ Rotate [L-DIAL] (or push [ Y Y ] / [ Z Z ] ) to set the desired audio level. 3. Adjusting squelch level ➥ While pushing [SQL] , rotate [R- DIAL] to set the squelch level. 4. T une the desired frequen[…]

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  VI QUICK REFERENCE GUIDE [Using the keypad] ➥ E nter the desired frequency via the keypad. • Direct input can be set until 1 kHz digit, rotate [R-DIAL] to set below 1 kHz frequency after set tuning steps, if necessary . (See p. 14 for setting the tuning step.) • Pushing [VFO MHz] omits the entry of 100 kHz and below , when you want to edit to[…]

• Page 12: Icom IC-R20

  VII QUICK REFERENCE GUIDE ■ Programmed scan operation 25 pairs, 50 channels of memories are used for programmed scan operation, that specify a scanning range. The pro- grammed scan scans between “xxA” and “xxB” (xx=00 to 24) frequencies. Therefore, before operating the programmed scan, different frequencies must be programmed into “A”[…]

• Page 13: Icom IC-R20

  VIII QUICK REFERENCE GUIDE D D Starting scan 1. Select VFO mode. Push [VFO MHz] to select the VFO mode for full, band and programmed scan operation. • Select memory mode by pushing [MR S.MW] for memory or bank scan. 2. Selecting a scanning type While pushing and holding [MODE SCAN] , rotate [R-DIAL] to select one of the desired scanning type. •[…]

• Page 14: Icom IC-R20

  ■ Front, top and side panels q ANTENNA CONNECTOR (p. II) BNC connector: Connects the supplied antenna. w SQUELCH KEY [SQL] (p. 18) ➥ Push and hold to temporarily open the squelch and monitor the operating frequency . ➥ While pushing this key , rotate the tuning dial* to adjust the squelch level. e UP/DOWN KEYS [ Y Y ]/[ Z Z ] Adjust audio vol[…]

• Page 15: Icom IC-R20

  2 1 P ANEL DESCRIPTION 1 u LEFT DIAL [L-DIAL] ➥ During single band operation, rotate to adjust audio vol- ume level.* (p. 17) ➥ During dualwatch operation, activates as the tuning dial for upper side on the display .* i RIGHT DIAL [R-DIAL] ➥ Rotate to select the operating frequency .* (p. 12) ➥ While scanning, changes the scanning direction[…]

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  3 1 P ANEL DESCRIPTION t VFO/MHz KEY [VFO MHz] ➥ Push to select VFO mode. (p. 1 1) ➥ Push for 1 sec. to toggle between the 1 MHz or 10 MHz tuning steps (p. 14) y MODE/SCAN KEY [MODE SCAN] ➥ Push to select the operating mode (FM, WFM, AM, USB, LSB, CW). (p. 16) ➥ Push for 1 sec. to start a scan. (p. 35) u MEMOR Y KEY [MR S.MW] ➥ Push to se[…]

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  4 1 P ANEL DESCRIPTION 1 !2 T ONE SCAN KEY [4 T -SCAN] ➥ Inputs digit ‘4’ for frequency input, memory channel selection, etc. ➥ Push for 1 sec. to start a tone scan. (p. 48) !3 FREQUENCY SKIP KEY [5 SKIP] ➥ Inputs digit ‘5’ for frequency input, memory channel selection, etc. ➥ Push for 1 sec. to turn the frequency skip function ON a[…]

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  5 1 P ANEL DESCRIPTION !8 TUNING STEP KEY [9 TS] ➥ Inputs digit ‘9’ for frequency input, memory channel selection, etc. ➥ Push for 1 sec. to select the tuning step. (p. 14) !9 LOCK KEY [• LOCK] ➥ Inputs MHz digit for frequency input. (p. 15) ➥ Push for 1 sec. to toggle the lock function ON and OFF . (p. 16) •“ ” appears while th[…]

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  6 1 P ANEL DESCRIPTION 1 ■ Function display q BA TTER Y INDICA TOR ➥ “” appears when the installed batteries have ample capacity . • They do not appear when operating with an external power source. ➥ “” appears when the batteries are nearing ex- haustion. • IC-R20 installed the BP-206 must be charged presently , but when it instal[…]

• Page 20: Icom IC-R20

  7 1 P ANEL DESCRIPTION r ANL/NB INDICA TOR (pgs. 21, 52) ➥ “ANL” appears when the ANL (Automatic Noise Limitter) function is in use. The ANL function is available only for AM mode. ➥ “ NB” appears when the noise blanker function is in use. The noise blanker function is available while in LSB/USB/CW modes. t LOCK INDICA TOR (p. 16) Appea[…]

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  8 2 BA TTER Y INST ALLA TION/CHARGING 1 2 ■ Battery installation Make sure receiver power is turned OFF before installing or replacing the batteries. q Remove the battery cover from the receiver . w For alkaline battery use, attach the supplied battery spacer . e Install 3 R6 (AA) size alkaline batteries. • Be sure to observe the correct polari[…]

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  ■ Caution D D Battery caution CAUTION! NEVER short the battery terminals. Current will flow into metal objects, so be careful when placing battery pack in handbags, etc. NEVER incinerate used battery packs or battery cells. Internal battery gas may cause explosion. NEVER mix old and new batteries. Make sure all battery cells are the same brand, t[…]

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  10 2 BA TTERY INST ALLA TION/CHARGING 2 D D CP-18A/E fuse replacement If the fuse blows or the receiver stops functioning while oper- ating with the optional CP-18A/E, fi nd the source of the prob- lem if possible, and replace the damaged fuse with a new rated one (FGB 5 A) as shown below. D D Rapid charging with the BC-156 The optional BC-156 pro[…]

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  11 FREQUENCY AND CHANNEL SETTING 3 ■ Mode selection D D VFO mode VFO mode is used for the desired frequency setting within the frequency coverage. ➥ Push [VFO MHz] to select VFO mode. What is VFO? VFO is an abbreviation of V ariable Frequency Oscillator . Fre- quencies for receiving are generated and controlled by the VFO. D D Memory mode/PreSe[…]

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  12 3 FREQUENCY AND CHANNEL SETTING 3 ■ Operating band selection The receiver can receive the AM broadcast, HF bands, 50 MHz, FM broadcast, VHF air , 144 MHz, 300 MHz, 400 MHz, 800 MHz,* 1200 MHz or 2400 MHz. ➥ In VFO mode, push [BAND] several times to select the de- sired frequency band. • If the other than VFO mode is selected, such as a mem[…]

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  13 3 FREQUENCY AND CHANNEL SETTING • A vailable frequency bands B AND B AND AM broadcast band HF band 50 MHz band 800 MHz band 400 MHz band FM broadcast band VHF air band 144 MHz band 300 MHz band 1200 MHz band 2400 MHz band : Push : Rotating while pushing Initial frequencies shown will differ according to version. AM MODE AM MODE FM MODE WFM MOD[…]

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  14 3 FREQUENCY AND CHANNEL SETTING 3 ■ Setting a tuning step The tuning step can be selected for each frequency band in- dependently , however , the tuning steps, 8.33 kHz and 9 kHz, only appear when setting the tuning step for the VHF air band and AM broadcast band, respectively . The following tuning steps are available for the IC-R20. • 0.01[…]

• Page 28: Icom IC-R20

  15 3 FREQUENCY AND CHANNEL SETTING D D Using the keypad The frequency can be directly set via numeral keys. • When editing a frequency outside of the fre- quency range, the previously displayed frequency is automatically recalled after editing last digit. q Push [VFO MHz] to select VFO mode, if necessary . w Enter the desired frequency via the ke[…]

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  16 3 FREQUENCY AND CHANNEL SETTING 3 ■ Receive mode selection Receive modes are determined by the physical properties of the radio signals. The receiver has 6 receive modes: FM, WFM, AM, LSB, USB and CW modes. The mode selection is stored independently in each band and memory channels. T ypically , AM mode is used for the AM broadcast stations (0[…]

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  17 BASIC OPERA TION 4 ■ Receiving Make sure charged battery pack (BP-206) or brand new al- kaline batteries are installed (p. 8). q Push [POWER] for 1 sec. to turn power ON. w Rotate [L-DIAL] (or push [ Y Y ] or [ Z Z ] ) to set the desired audio level. • The frequency display shows the volume level while setting. See the section at right for d[…]

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  18 4 BASIC OPERA TION 4 ■ Squelch level setting The squelch circuit mutes the received audio signal depend- ing on the signal strength. The receiver has 9 squelch levels, a continuously open setting and an automatic squelch setting. ➥ While pushing and holding [SQL] , rotate [R-DIAL] to se- lect the squelch level. •“ LEVEL 1” is loose squ[…]

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  ■ Attenuator function The attenuator prevents a desired signal from distorting when very strong signals are near the desired frequency or when very strong electric fi elds, such as from a broadcasting sta- tion, are near your location. The attenuator gain is about 30 dB. ➥ Push [ Ω Ω Ω Ω A TT] for 1 sec. to toggle the attenuator functi[…]

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  20 4 BASIC OPERA TION 4 Duplex communication uses 2 different frequencies for trans- mitting and receiving. Generally , duplex is used in communi- cation through a repeater , some utility communications, etc. During duplex operation, the transmit station frequency is shifted from the receive station frequency by the offset fre- quency . Repeater in[…]

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  21 4 BASIC OPERA TION ■ AFC function The AFC (Automatic Frequency Control) function tunes the displayed frequency automatically when an off-center fre- quency is received. It activates in FM/WFM modes only with single band operation. ➥ Push [0 AFC] to toggle the AFC function ON and OFF . • “AFC” appears when the AFC function is in use. NO[…]

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  22 4 BASIC OPERA TION 4 ■ Band scope The band scope function allows you to visually check a spec- ified frequency range. Sweep range can be selected from ±1 4k Hz through ± 1400 kHz. q Set the desired frequency as band scope center frequency . w While pushing and holding [2 SWEEP] , rotate [R-DIAL] to select the sweep steps, if desired. •A va[…]

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  23 4 BASIC OPERA TION ■ [DIAL] function assignment The frequency control dial can be traded with an audio volume control dial or [ Y Y ] / [ Z Z ] keys to suit your preference. ➥ Push [1 DIAL.SEL] for 1 sec. to toggle the dial function from tuning dial and audio volume. • Single band operation • Dualwatch operation √ MODE ANL AFC TSQL FM […]

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  24 5 DUAL W A TCH OPERA TION 4 5 ■ Main band selection ➥ Push [MAIN/SUB] momentarily to select the upper band or lower band as main band (operating band) alternately . ■ Band exchange ➥ Push [MAIN/SUB] for 1 sec to exchange the upper band’ s frequency and lower band’s frequency . • The A-side is upper side on the display , and B-side […]

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  25 5 DUAL WA TCH OPERA TION ■ Setting audio volume q Push [DUAL W A TCH] for 1 sec. to enter the dualwatch op- eration, if necessary w Push and hold [SQL] , p ush [ Y Y ] or [ Z Z ] to adjust the audio level for the main band. • Pushing and holding either key changes the audio level continu- ously . • The display shows the volume level while […]

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  26 6 MEMOR Y CHANNELS ■ General description The receiver has 1050 memory channels including 50 scan edge memory channels (25 pairs) for storage of often-used frequencies. And a total of 26 memory banks, A to Z are avail- able for usage by group, etc. Up to 100 channels can be as- signed into a bank. D D Memory channel contents The following infor[…]

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  27 6 MEMORY CHANNELS ■ Memory bank setting The IC-R20 has a total of 26 banks (A to Z) . Regular memory channels, 000 to 999, are assigned into the desired bank for easy memory management. q Push [MR S.MW] for 1 sec. to select the select memory write condition. •1 short and 1 long beep sound. •“ µ µ ” indicator blinks. w Rotate [R-DIAL][…]

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  28 6 MEMORY CHANNELS ■ Memory bank selection q Push [MR S.MW] to select memory mode. w While pushing [BAND] , rotate [R-DIAL] to select the de- sired bank (A to Z) . •T he bank can also be selected by pushing [BAND] several times. • Only programmed banks are displayed. e Rotate [R-DIAL] to select the bank channel. • Only programmed channels[…]

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  29 6 MEMORY CHANNELS ■ Programming memory/bank name Each memory channel can be programmed with an alphanu- meric channel name for easy recognition and can be indicated independently by channel. Names can be a maximum of 8 characters. q Push [MR S.MW] to select memory mode. w Rotate [R-DIAL] to select the desired memory channel. e Push [MR S.MW] f[…]

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  30 6 MEMORY CHANNELS D D A vailable characters ■ Selecting memory/bank name indication During memory mode operation, one of the programmed memory name or bank name can be displayed below the fre- quency indication. q Push [MR S.MW] to select memory mode. • Push [BAND] several times to select the desired bank group. w While pushing [6 M.N] , rot[…]

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  31 6 MEMORY CHANNELS ■ Copying memory contents This function transfers a memory channel’s contents to VFO (or another memory channel). This is useful when searching for signals around a memory channel frequency and for re- calling the offset frequency , subaudible tone frequency etc. D Memory ➪ VFO q Select the memory channel to be copied. ?[…]

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  32 6 MEMORY CHANNELS ■ Memory clearing Contents of programmed memories can be cleared (blanked), if desired. q Push [MR S.MW] for 1 sec. to select the select memory write condition. •1 short and 1 long beeps sound. •“ µ µ ” indicator blinks. • Do not hold [MR S.MW] for more than 2 sec. otherwise the memory contents will be copied to V[…]

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  33 6 MEMORY CHANNELS ■ Erasing/transferring bank contents The bank contents of programmed memory channels can be cleared or reassigned to another memory bank. INFORMA TION: Even if the memory bank contents are cleared, the memory channel contents still remain pro- grammed. q Select the desired bank contents to be transferred or erased from the ba[…]

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  34 7 SCAN OPERA TION 6 ■ Scan types Scanning searches for signals automatically and makes it easier to locate new stations for contact or listening purposes. There are 7 scan types and 4 resume conditions to suit your operating needs. The scan speed is at 100 ch/sec. (approx.) for VFO scan, 20 ch/sec. (approx) for memory scan. FULL SCAN (p. 35) R[…]

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  35 7 SCAN OPERA TION ■ Full/band/programmed scan q Select VFO mode with [VFO MHz] . • Select the desired frequency band with [BAND] , if desired. w Set the squelch level. e While pushing and holding [MODE SCAN] , rotate [R-DIAL] to select the desired scanning type. • “ALL” for full scan; “BAND” for band scan, “PROG-xx” for pro- gr[…]

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  36 7 SCAN OPERA TION ■ Scan edges programming Scan edges can be programmed in the same manner as memory channels. Scan edges are programmed into scan edges, 00A/00B to 24A/24B, in memory channels. q Push [VFO MHz] to select VFO mode. w Set the desired frequency: ➥ Select the desired band with [BAND] . ➥ Set the desired frequency with [R-DIAL][…]

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  37 7 SCAN OPERA TION ■ Memory/bank/all bank scan q Select memory mode with [MR S.MW] . •S elect the desired bank with [BAND] for bank scan. w Set the squelch level. e While pushing and holding [MODE SCAN] , rotate [R-DIAL] to select the desired scanning type. • “ALL” for all bank scan; “BANK-LINK” for bank link scan or “BANK-x” fo[…]

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  38 7 SCAN OPERA TION ■ Auto-memory write scan This scan is useful for searching a speci fi ed frequency range and automatically storing busy frequencies into memory channels. The auto-memory write scan is performed with any VFO scan types (ALL, BAND, PROG). q Select VFO mode with [VFO MHz] . w Push and hold [MODE SCAN] to enter scanning type se-[…]

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  39 7 SCAN OPERA TION Memory channels can be set to be skipped for memory skip scan. In addition, memory channels can be set to be skipped for both memory skip scan and frequency skip scan. These are useful to speed up the scan interval. q Select a memory channel: ➥ Push [MR S.MW] to select memory mode. ➥ Rotate [R-DIAL] to select the desired ch[…]

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  40 7 SCAN OPERA TION D D Scan pause timer The scan pauses when receiving signals according to the scan pause time. It can be set from 2 to 20 sec. or unlimited. q Push [8 SET] for 1 sec. to enter set mode. w Rotate [R-DIAL] to select “SET EXP AND,” then push [8 SET] . e Rotate [R-DIAL] to turn the expand set mode selection ON, then push [8 SET][…]

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  41 7 SCAN OPERA TION D D Scan resume timer The scan restarts after the signal disappears according to the resume time. It can be set from 0–5 sec. or unlimited. q Push [8 SET] for 1 sec. to enter set mode. w Rotate [R-DIAL] to select “SET EXP AND,” then push [8 SET] . e Rotate [R-DIAL] to turn the expand set mode selection ON, then push [8 SE[…]

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  42 8 PRIORITY W A TCH ■ Priority watch types Priority watch checks for signals on the frequency every 5 sec. while operating on a VFO frequency or scanning. The receiver has 3 priority watch types to suit your needs. The watch resumes according to the selected scan resume condition. See the left page for details. NOTE: If the pocket beep function[…]

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  43 8 PRIORITY W A TCH ■ Priority watch operation D D Memory channel watch and memory scan watch q Select VFO mode; then, set an operating frequency . w Set the watching channel(s). For memory channel watch: Select the desired memory channel. For memory scan watch: Select memory mode, or the desired bank group; then, push [MODE SCAN] for 1 sec. to[…]

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  44 8 PRIORITY W A TCH D D VFO scan watch q Select memory mode. • Select a memory bank, if desired. w Push [MODE SCAN] for 1 sec. to start memory/bank scan, if desired. While scanning memory/bank channels: Starts memory/bank scan fi rst. Memory/bank scan can- not be started after VFO scan is started. e Push [8 SET] for 1 sec. to enter set mode. r[…]

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  45 COMFORT ABLE RECEIVING 9 ■ T one/DTCS squelch operation The tone or DTCS squelch opens only when receiving a sig- nal with the same pre-programmed subaudible tone or DTCS code, respectively . Y ou can silently wait for the speci fi ed sig- nal using the same tone. q Set the desired frequency in FM mode. w While pushing [7 TONE] , rotate [R-DI[…]

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  46 9 COMFORT ABLE RECEIVING ■ T one squelch frequency/DTCS code setting 88.5 Hz and 023 is set as the default for the tone squelch fre- quency and the DTCS code, respectively . The frequency and code can be selected as desired. q Push [8 SET] for 1 sec. to enter set mode. w Rotate [R-DIAL] to select “SET EXP AND,” then push [8 SET] . e Rotate[…]

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  47 9 COMFORT ABLE RECEIVING ■ DTCS polarity setting As well as the code setting, the polarity setting is also avail- able for the DTCS operation. When a different polarity is set, the DTCS never releases audio mute even when a signal with matched code number is received. q Push [8 SET] for 1 sec. to enter set mode. w Rotate [R-DIAL] to select “[…]

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  48 9 COMFORT ABLE RECEIVING ■ T one scan By monitoring a signal that is being operated with pocket beep, tone or DTCS squelch function, you can determine the tone frequency or DTCS code necessary to open a squelch. q Set the frequency to be checked for a tone frequency or code. w T urn the desired tone type, tone squelch or DTCS, ON by holding [7[…]

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  49 SET MODE 10 ■ General Set mode is used for programming infrequently changed val- ues or conditions of functions. In addition, the IC-R20 has an expanded set mode which is used for programming even more infrequently changed val- ues or conditions of functions. When turning the expanded set mode OFF , only about one third of the set mode items a[…]

• Page 63: Icom IC-R20

  50 10 SET MODE ■ Set mode items The following items are available in the set mode and ex- panded set mode. D D General set mode items D D Expanded set mode items † A vailable for the USA version only . *** — SET — MODE — *** — DTCS — CODE >TONE — FREQ — DUPLEX — OFFSET — FREQ — SCOPE — AF — OUTPUT — SCAN — STOP — BEEP —————- *** — […]

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  51 10 SET MODE D D Priority watch T urn the priority watch or priority beep (priority watch with beep emission capability) ON. (default: OFF) •O N: Start priority watch after exiting set mode. • BELL : Emits beeps and blinking “ S ” indicator when a signal is received on the priority frequency . D D Key-touch beep The key-touch beep can be […]

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  52 10 SET MODE D D Power save The power save function reduces the current drain to con- serve battery power . This power save function can be turned OFF , if desired. In the default setting (“AUTO” selection), the power save func- tion is activated in 1:4 (125 msec.: 500 msec.) ratio when no sig- nal is received for 5 sec. The ratio becomes 1:8[…]

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  53 10 SET MODE D D AM antenna selection This setting is activated only for the AM broadcast band, 0.495–1.620 MHz (differ according to version) reception. • EXT : Use the antenna connected to the antenna con- nector . (default) • BAR : Use the internal bar antenna for AM broadcast band reception. D D FM antenna selection This setting is activ[…]

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  54 10 SET MODE D D Dial speed acceleration The dial speed acceleration automatically speeds up the tun- ing dial speed when rotating [R-DIAL] rapidly . • OFF : The dial speed acceleration is turned OFF . •O N: The dial speed acceleration is tuned ON. (default) D D Monitor key action The monitor key , [SQL] , can be set as a ‘sticky’ key . W[…]

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  55 10 SET MODE D D Scan pause timer Selects the scan pause time. When receiving signals, the scan pauses according to the scan pause time. • 2–20 : Scan pauses for 2–20 sec. on a received signal, and selected in 2 sec. steps. (default: 10 sec.) • HOLD : Scan pauses on a received signal until it disap- pears. Rotate [R-DIAL] to resume manual[…]

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  56 10 SET MODE D D Scope audio output Sets the audio output function while scope operation. The scope audio output is used for fi nding out the signals while scope function are modulated, unmodulated or beet signal etc. D D Offset frequency Sets the duplex offset frequency for each frequency band in- dependently within 0 to 159.99999 MHz range. Du[…]

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  57 10 SET MODE D D T one frequency Sets subaudible tone frequency for tone squelch operation. T otal of 50 tone frequencies (67.0–254.1 Hz) are available. (default: 88.5 Hz) •A vailable subaudible tone frequencies D D DTCS code Sets DTCS code for DTCS squelch operation. T otal of 104 codes (023–754) are available. (default: 023) •A vailable[…]

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  58 10 SET MODE 10 D D Memory bank link Sets the linked bank for the bank-link scan. (default: All banks are ON) q Rotate [R-DIAL] to select the bank that you want to change setting. w Push [8 SET] for 1 sec. to enter the bank link setting con- dition. e Rotate [R-DIAL] to select the setting, then push [8 SET] . r Rotate [R-DIAL] to select next bank[…]

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  59 10 SET MODE D D CI-V address To distinguish equipment, each CI-V transceiver/receiver has its own Icom standard address in hexadecimal code. The IC- R20’s address is “6C.” When 2 or more IC-R20s are connected to an optional CT -17 CI — V LEVEL CONVERTOR , set a different address for each IC- R20 in the range “01” to “7F .” (default[…]

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  60 11 OTHER FUNCTIONS ■ Antenna selection The IC-R20 has an internal bar antenna installed for receiving AM broadcast band (0.495–1.620 MHz; differ according to version) signals. In addition, the connected earphone’s cable can be used as an antenna for receiving FM broadcast band (76.000–107.995 MHz; differ according to version) signals. D […]

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  61 11 OTHER FUNCTIONS D D W eather channel selection q Push [MR S.MW] several times to select the weather chan- nel group. w Rotate [R-DIAL] to select the desired weather channel. e Push [VFO MHz] to return to VFO mode, or push [MR S.MW] to select other mode to exit the weather channel. D D We ather alert function NOAA broadcast stations transmit w[…]

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  62 11 OTHER FUNCTIONS ■ Data cloning Cloning allows you to quickly and easily transfer the pro- grammed contents from a personal computer to a receiver using the optional CS-R20 CLONING SOFTWARE . D Cloning using a personal computer Data can be cloned to and from a personal computer (Mi- crosoft ® Windows ® 98/Me/2000/XP) using the optional CS-[…]

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  63 11 OTHER FUNCTIONS D Cloning error NOTE: DO NOT push any key on the receiver during cloning. This will cause a cloning error . When the display appears as below , a cloning error has oc- curred. In such a case, the receiver automatically performs ALL RESET while turning power OFF and ON. ■ Auto power-off function The IC-R20 can be set to autom[…]

• Page 77: Icom IC-R20

  64 11 OTHER FUNCTIONS ■ IC recorder The IC-R20 has an IC recorder of up to 32 tracks. The maxi- mum recording length is about 260 minutes. D D Recording a received audio q Push [ REC] momentarily to start recording. • Red LED below the [ REC] lights ON. w Push [ REC] to pause to record or push [ ■ ≈ ≈ ] to stop recording. • While pausin[…]

• Page 78: Icom IC-R20

  65 11 OTHER FUNCTIONS • Playback speed setting The playback speed can be selected from 5 speeds. q Push [ ■ ≈ ≈ ] for 1 sec. to enter the playback speed set mode. w Rotate [R-DIAL] to select the desired playback speed, then push [ ■ ≈ ≈ ] . • x x 0 0 . . 5 5 0 0 : Playback the recorded content at half speed. • x x 0 0 . . 7 7 5 5 […]

• Page 79: Icom IC-R20

  66 11 OTHER FUNCTIONS 11 • Automatic recording The IC-R20 has an automatic recording function. When this function is activated, the receiver will record automatically when a receiving signal appears and pause when the signal disappears. This function is very useful when you want to store an uncontinuous signal. q Push [ REC] for 1 sec. to enter t[…]

• Page 80: Icom IC-R20

  67 11 OTHER FUNCTIONS ■ Partial reset If you want to initialize the operating conditions (VFO fre- quency , VFO settings, set mode contents) without clearing the memory contents, a partial resetting function is available for the receiver . ➥ While pushing [VFO MHz] , turn the power ON to partially reset the receiver . ■ All reset The function[…]

• Page 81: Icom IC-R20

  68 12 CONTROL COMMAND 11 12 ■ General The IC-R20 can be connected to a PC via the PC’s RS-232C port using an optional CT -17 CI-V LEVEL CONVERT OR . This allows you to control the receiver from the PC and/or transfer data from the receiver to the PC. Control is provided via Icom’s CI-V Communication Interface. An appropriate application for C[…]

• Page 82: Icom IC-R20

  69 12 CONTROL COMMAND CT-1 7 Power supply 9–15VDC RS-232C cable IC-R20 to [SP/CI-V] Computer Optional BC-25 CI-V connections example CI-V compatible transceiver CI-V compatible transceiver 3.5(d) mm GND I/O GND I/O 3-conductor 3.5(d) mm plug must be used. 2-conductor 3.5(d) mm plug[…]

• Page 83: Icom IC-R20

  70 13 FREQUENCY T ABLE CH Freq. 40 628.75 41 636.75 42 644.75 43 652.75 44 660.75 45 668.75 46 676.75 47 684.75 48 692.75 49 700.75 50 708.75 51 716.75 52 724.75 53 732.75 54 740.75 55 748.75 56 756.75 57 764.75 58 772.75 59 780.75 60 788.75 61 796.75 62 804.75 63 812.75 64 820.75 65 828.75 66 836.75 67 844.75 68 852.75 69 860.75 CH Freq. 1 46.75 2[…]

• Page 84: Icom IC-R20

  71 13 FREQUENCY T ABLE D D China channels (unit: MHz) CH Freq. 1 56.25 2 64.25 3 72.25 4 83.75 5 91.75 6 174.75 7 182.75 8 190.75 9 198.75 10 206.75 11 214.75 12 222.75 13 477.75 14 485.75 15 493.75 16 501.75 17 509.75 18 517.75 19 525.75 20 533.75 21 541.75 22 549.75 23 557.75 24 565.75 25 613.75 26 621.75 27 629.75 28 637.75 29 645.75 30 653.75 3[…]

• Page 85: Icom IC-R20

  72 13 FREQUENCY T ABLE D D Indonesian channels (unit: MHz) CH Freq. 1A 53.75 2 60.75 3 67.75 4 180.75 5 187.75 6 194.75 7 201.75 8 208.75 9 215.75 10 222.75 11 229.75 21 476.75 22 484.75 23 492.75 24 500.75 25 508.75 26 516.75 27 524.75 28 532.75 29 540.75 30 548.75 31 556.75 32 564.75 33 572.75 34 580.75 35 588.75 36 596.75 37 604.75 38 612.75 39 […]

• Page 86: Icom IC-R20

  73 13 FREQUENCY T ABLE ■ VHF marine channels (unit: MHz) CH Ship Ship No. Transmit Receive 01 156.050 160.650 01A 156.050 156.050 02 156.100 160.700 03 156.150 160.750 03A 156.150 156.150 04 156.200 160.800 04A 156.200 156.200 05 156.250 160.850 05A 156.250 156.250 06 156.300 156.300 07 156.350 160.950 07A 156.350 156.350 08 156.400 156.400 09 15[…]

• Page 87: Icom IC-R20

  74 13 FREQUENCY T ABLE CH Frequency 1 462.5625 MHz 2 462.5875 MHz 3 462.6125 MHz 4 462.6375 MHz 5 462.6625 MHz 6 462.6875 MHz 7 462.7125 MHz ■ Other communications in the USA D D FRS (Family Radio Service) channels Dot color Frequency Red 151.625 MHz Purple 151.955 MHz Blue 154.570 MHz Green 154.600 MHz White 462.575 MHz Black 462.625 MHz Orange […]

• Page 88: Icom IC-R20

  75 13 FREQUENCY T ABLE Frequency Description 121.500 Emergencies 122.000 Flight Advisory Service 122.200 Flight Service Stations 122.700 Unicom— Uncontrolled airports 122.725 Unicom— Private airports 122.750 Unicom— Air-to-air communications 122.800 Unicom— Uncontrolled airports 122.900 Search & rescue training, & uncontrolled airpo[…]

• Page 89: Icom IC-R20

  76 13 FREQUENCY T ABLE ■ Other communications— other countries CH Frequency 1 446.00625 2 446.01875 3 446.03125 4 446.04375 5 446.05625 6 446.06875 7 446.08125 8 446.09375 D D PMR446 channels (unit: MHz) CH Frequency 59 434.525 60 434.550 61 434.575 62 434.600 63 434.625 64 434.650 65 434.675 66 434.700 67 434.725 68 434.750 69 434.775 CH Frequ[…]

• Page 90: Icom IC-R20

  77 13 FREQUENCY T ABLE CH Frequency 1 476.425 MHz 2 476.450 MHz 3 476.475 MHz 4 476.500 MHz 5 476.525 MHz 6 476.550 MHz 7 476.575 MHz 8 476.600 MHz 9 476.625 MHz 10 476.650 MHz 11 476.675 MHz 12 476.700 MHz 13 476.725 MHz 14 476.750 MHz 15 476.775 MHz 16 476.800 MHz 17 476.825 MHz 18 476.850 MHz 19 476.875 MHz 20 476.900 MHz D D UHF C.R.S (Citizen […]

• Page 91: Icom IC-R20

  78 14 MAINTENANCE PROBLEM POSSIBLE CAUSE SOLUTION REF . ■ T roubleshooting If your receiver seems to be malfunctioning, please check the following points before sending it to a service center . No power comes on. No sound comes from the speaker . Sensitivity is low and only strong signals are audible. Frequency cannot be set. No beep sound. Recei[…]

• Page 92: Icom IC-R20

  79 SPECIFICA TIONS 15 D D GENERAL • Frequency coverage : (Unit: MHz) USA 0.150–821.999, 851.000–866.999, 896.000–1304.999, 1305.000–3304.999 France 0.150–29.999, 50.200–51.200, 87.500–108.000, 144.000–146.000, 430.000–440.000, 1240.000–1300.000 Other than above 0.150–1304.999, 1305.000–3304.999 • Number of memory channel[…]

• Page 93: Icom IC-R20

  80 16 OPTIONS 15 16 ■ Options BC-149 A/D AC ADAPTOR Regularly charges the installed battery pack (BP-206). 6V DC/1 A output. Same as supplied one. (Not sup- plied with some versions.) CP-18A/E CIGARETTE LIGHTER CABLE WITH DC — DC CONVERTER Allows you to operate the re- ceiver through a 12 V cigarette lighter socket, and also charges the installed[…]

• Page 94: Icom IC-R20

  81 DRIVER INST ALLA TION 17 Before installing the optional CS-R20 CLONING SOFTWARE , the USB driver must be installed. Install the USB driver as follows. ■ For Microsoft ® Windows ® XP q Connect the IC-R20 to the desired USB port using with the USB cable, OPC-1382. • “Found New Hardware” appears as below . w The “Found New Hardware Wiza[…]

• Page 95: Icom IC-R20

  82 17 DRIVER INST ALLA TION e Click “Search for the best device in these locations,” click “Include the location in the search,” click [Browse] to select the CD drive. r The wizard starts searching for the driver and shows the dialog below during search. Specifiy Select Select Click Click 17[…]

• Page 96: Icom IC-R20

  83 17 DRIVER INST ALLA TION t After the driver is found the “Hardware Installation” dialog box appears as below . • Click [Continue Anyway] to start the installation. y Windows starts installing the USB driver . Click[…]

• Page 97: Icom IC-R20

  84 17 DRIVER INST ALLA TION 17 u After the installation is completed, click [Finish]. i The “Found New Hardware Wizard,” will come up again to install the USB serial port driver . o “Hardware Update Wizard” appears as below . Select “Install from a list or specific location (Advanced)” then click [Next>]. !0 Repeat step e to y . Clic[…]

• Page 98: Icom IC-R20

  85 17 DRIVER INST ALLA TION !1 The following screen appears when the installation is com- pleted. Click [Finish] to close the screen. !2 After clicking [Finish], the dialog appears as below . • Rebooting the PC is recommended. ■ For Microsoft ® W indows ® 2000 q Connect the IC-R20 to the desired USB port using with the USB cable, OPC-1382. ?[…]

• Page 99: Icom IC-R20

  86 17 DRIVER INST ALLA TION e Select “Search for a suitable driver for my device (recom- mended),” then click [Next>]. r Select “CD-ROM drives,” and insert the supplied CD into the CD drive, then click [Next>]. Select Click Select Click 17[…]

• Page 100: Icom IC-R20

  87 17 DRIVER INST ALLA TION t When the driver is found, the following dialog is displayed. Click [Next>] to start the installation. y After the installation is completed, click [Finish]. Click Click[…]

• Page 101: Icom IC-R20

  88 17 DRIVER INST ALLA TION u The “Found New Hardware Wizard,” will come up again to install the USB serial port driver . • “Found New Hardware” appears as below . i Repeat step w to t . o The following screen appears when the installation is com- pleted. Click [Finish] to close the screen. • Rebooting the PC is recommended. ■ For Mic[…]

• Page 102: Icom IC-R20

  89 17 DRIVER INST ALLA TION e Select “Search for the best driver for your device. (Recom- mended),” then click [Next>]. r Select “Specify a location,” and insert the supplied CD into the CD drive, click [Browse] to select the CD drive, then click [Next>]. Specifiy Select Click Click Select Click[…]

• Page 103: Icom IC-R20

  90 17 DRIVER INST ALLA TION 17 t When the driver is found, the following dialog is displayed. Click [Next>] to start the installation. y After the installation is completed, click [Finish]. • Rebooting the PC is recommended. ■ COM port con fi rmation After the driver installation, con fi rm the driver availability and the port number are r[…]

• Page 104: Icom IC-R20

  91 17 DRIVER INST ALLA TION t Click the [Device Manager]. • Device Manager screen appears as below . y Click “ ” of the “Ports (COM & LPT)” to display the usable COM port and the port number . u Con fi rm the USB serial port availability and the COM port number . i Close the Device Manager , System Properties screen and then Control […]

• Page 105: Icom IC-R20

  q w iR20 ■ VFO mode selection POCKET GUIDE Push [VFO MHz] momentarily to select VFO mode. ➥ ■ Receive mode selection Push [MODE SCAN] sev eral times to select the desired mode. ➥ ■ Audio le vel setting Rotate [L-DIAL] (or push [ Y ] / [ Z ] ) to set the audio lev el. ➥ ■ Squelch level setting While pushing [SQL] , rotate [R- DIAL] to […]

• Page 106: Icom IC-R20

  q w e r ■ Memory channel programming Set the desired frequency and other functions in VFO mode. Push [MR S.MW] f or 1 sec. to enter the select memory wr ite condition. • 1 shor t and 1 long beeps sound. Rotate [R-DIAL] to select the de- sired memory channel number. Push [MR S.MW] f or 1 sec. again to program the contents into the selected chann[…]

• Page 107: Icom IC-R20

  94 19 CE 19 DECLARA TION OF CONFORMITY We Icom Inc. Japan 1-1-32, Kamiminami, Hirano-ku Osaka 547-0003, Japan Declare on our sole responsibility that this equipment complies with the essential requirements of the Radio and T elecommunications T erminal Equipment Directive, 1999/5/EC, and that any applicable Essential T est Suite measurements have b[…]

• Page 108: Icom IC-R20

  1-1-32 Kamiminami, Hirano-ku, Osaka 547-0003, Japan A-6353H-1EX- w Printed in Japan © 2004 Icom Inc. <Intended Country of Use> ■ GER ■ ■ FRA ■ ESP ■ SWE ■ AUT ■ NED ■ POR ■ DEN ■ GBR ■ BEL ■ IT A ■ FIN ■ IRL ■ LUX ■ GRE ■ ■ SUI ■ ■ NOR <Intended Country of Use> ■ ■ GER ■ FRA ■ ■ ESP ■[…]

• Страница 1

  INSTRUCTION MANUAL iR20 COMMUNICA TIONS RECEIVER This device complies with Part 15 of the FCC rules. Operation is sub- ject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. W ARNING: MODIFICA TION[…]

• Страница 2

  i FOREWORD Thank you for purchasing this Icom product. The IC-R20 COM — MUNICA TIONS RECEIVER is designed and built with Icom’s supe- rior technology and craftsmanship. With proper care, this product should provide you with years of trouble-free operation. We want to take a couple of moments of your time to thank you for making your IC-R20 your r[…]

• Страница 3

  R W ARNING! NEVER operate the receiver with an earphone, headphones or other audio accessories at high volume levels. Hearing experts advise against continuous high volume operation. If you experience a ringing in your ears, reduce the volume level or discontinue use. R W ARNING! NEVER connect the receiver directly to an AC outlet. This may pose a […]

• Страница 4

  iii SUPPLIED ACCESSORIES q Antenna ………………………………………………………1 w Belt clip (MB-98) …………………………………………1 set e Battery spacer ………………………………………………1 r Hand strap …………………………………………………1 t Battery pack* (BP-206) ……[…]

• Страница 5

  iv T ABLE OF CONTENTS 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 FOREWORD …………………………………………… i IMPORT ANT …………………………………………… i EXPLICIT DEFINITIONS ………………………….. i PRECAUTION ………………………………………… ii SUPPLIED ACCESSORIES ……………………[…]

• Страница 6

  I QUICK REFERENCE GUIDE ■ Preparations D Batteries installation q Remove the battery cover from the receiver . w For alkaline battery use, attach the supplied battery spacer . e Install 3 R6 (AA) size alkaline batteries. • Be sure to observe the correct polarity . Keep the battery contacts clean to avoid rust or poor contact. It’s a good idea[…]

• Страница 7

  II QUICK REFERENCE GUIDE D Belt clip Conveniently attaches to your belt. Attach the belt clip with the supplied screws using a phillips screwdriver . D Swivel belt clip (Option) The optional swivel belt clip (MB-86) is useful for easy attaching/detaching the receiver to/from the belt. q Attach the stopper with the supplied screws using a phillips s[…]

• Страница 8

  III QUICK REFERENCE GUIDE To remove: r T urn the receiver upside down, and then lift to release the receiver from the belt clip as shown at upper right. D D Antenna Insert the supplied antenna into the antenna connector and screw down the antenna as shown at right. NEVER hold the antenna when carrying the receiver . ✔ For your information Third-p[…]

• Страница 9

  IV QUICK REFERENCE GUIDE D Charging the battery q Install the battery pack (BP-206). w Plug the AC adaptor into an AC outlet. e Tu rn OFF the receiver , then insert the adaptor plug into the [DC] jack of the receiver . R R W ARNING!: NEVER attempt to charge any other batteries. Because the IC-R20 can charge the BP-206 only . Keep the jack cover att[…]

• Страница 10

  V QUICK REFERENCE GUIDE D Basic operation 1. T urning ON the receiver ➥ Push [POWER] for 1 sec. to turn the power ON. 2. Adjusting audio level ➥ Rotate [L-DIAL] (or push [ Y Y ] / [ Z Z ] ) to set the desired audio level. 3. Adjusting squelch level ➥ While pushing [SQL] , rotate [R- DIAL] to set the squelch level. 4. T une the desired frequen[…]

• Страница 11

  VI QUICK REFERENCE GUIDE [Using the keypad] ➥ E nter the desired frequency via the keypad. • Direct input can be set until 1 kHz digit, rotate [R-DIAL] to set below 1 kHz frequency after set tuning steps, if necessary . (See p. 14 for setting the tuning step.) • Pushing [VFO MHz] omits the entry of 100 kHz and below , when you want to edit to[…]

• Страница 12

  VII QUICK REFERENCE GUIDE ■ Programmed scan operation 25 pairs, 50 channels of memories are used for programmed scan operation, that specify a scanning range. The pro- grammed scan scans between “xxA” and “xxB” (xx=00 to 24) frequencies. Therefore, before operating the programmed scan, different frequencies must be programmed into “A”[…]

• Страница 13

  VIII QUICK REFERENCE GUIDE D D Starting scan 1. Select VFO mode. Push [VFO MHz] to select the VFO mode for full, band and programmed scan operation. • Select memory mode by pushing [MR S.MW] for memory or bank scan. 2. Selecting a scanning type While pushing and holding [MODE SCAN] , rotate [R-DIAL] to select one of the desired scanning type. •[…]

• Страница 14

  ■ Front, top and side panels q ANTENNA CONNECTOR (p. II) BNC connector: Connects the supplied antenna. w SQUELCH KEY [SQL] (p. 18) ➥ Push and hold to temporarily open the squelch and monitor the operating frequency . ➥ While pushing this key , rotate the tuning dial* to adjust the squelch level. e UP/DOWN KEYS [ Y Y ]/[ Z Z ] Adjust audio vol[…]

• Страница 15

  2 1 P ANEL DESCRIPTION 1 u LEFT DIAL [L-DIAL] ➥ During single band operation, rotate to adjust audio vol- ume level.* (p. 17) ➥ During dualwatch operation, activates as the tuning dial for upper side on the display .* i RIGHT DIAL [R-DIAL] ➥ Rotate to select the operating frequency .* (p. 12) ➥ While scanning, changes the scanning direction[…]

• Страница 16

  3 1 P ANEL DESCRIPTION t VFO/MHz KEY [VFO MHz] ➥ Push to select VFO mode. (p. 1 1) ➥ Push for 1 sec. to toggle between the 1 MHz or 10 MHz tuning steps (p. 14) y MODE/SCAN KEY [MODE SCAN] ➥ Push to select the operating mode (FM, WFM, AM, USB, LSB, CW). (p. 16) ➥ Push for 1 sec. to start a scan. (p. 35) u MEMOR Y KEY [MR S.MW] ➥ Push to se[…]

• Страница 17

  4 1 P ANEL DESCRIPTION 1 !2 T ONE SCAN KEY [4 T -SCAN] ➥ Inputs digit ‘4’ for frequency input, memory channel selection, etc. ➥ Push for 1 sec. to start a tone scan. (p. 48) !3 FREQUENCY SKIP KEY [5 SKIP] ➥ Inputs digit ‘5’ for frequency input, memory channel selection, etc. ➥ Push for 1 sec. to turn the frequency skip function ON a[…]

• Страница 18

  5 1 P ANEL DESCRIPTION !8 TUNING STEP KEY [9 TS] ➥ Inputs digit ‘9’ for frequency input, memory channel selection, etc. ➥ Push for 1 sec. to select the tuning step. (p. 14) !9 LOCK KEY [• LOCK] ➥ Inputs MHz digit for frequency input. (p. 15) ➥ Push for 1 sec. to toggle the lock function ON and OFF . (p. 16) •“ ” appears while th[…]

• Страница 19

  6 1 P ANEL DESCRIPTION 1 ■ Function display q BA TTER Y INDICA TOR ➥ “” appears when the installed batteries have ample capacity . • They do not appear when operating with an external power source. ➥ “” appears when the batteries are nearing ex- haustion. • IC-R20 installed the BP-206 must be charged presently , but when it instal[…]

• Страница 20

  7 1 P ANEL DESCRIPTION r ANL/NB INDICA TOR (pgs. 21, 52) ➥ “ANL” appears when the ANL (Automatic Noise Limitter) function is in use. The ANL function is available only for AM mode. ➥ “ NB” appears when the noise blanker function is in use. The noise blanker function is available while in LSB/USB/CW modes. t LOCK INDICA TOR (p. 16) Appea[…]

• Страница 21

  8 2 BA TTER Y INST ALLA TION/CHARGING 1 2 ■ Battery installation Make sure receiver power is turned OFF before installing or replacing the batteries. q Remove the battery cover from the receiver . w For alkaline battery use, attach the supplied battery spacer . e Install 3 R6 (AA) size alkaline batteries. • Be sure to observe the correct polari[…]

• Страница 22

  ■ Caution D D Battery caution CAUTION! NEVER short the battery terminals. Current will flow into metal objects, so be careful when placing battery pack in handbags, etc. NEVER incinerate used battery packs or battery cells. Internal battery gas may cause explosion. NEVER mix old and new batteries. Make sure all battery cells are the same brand, t[…]

• Страница 23

  10 2 BA TTERY INST ALLA TION/CHARGING 2 D D CP-18A/E fuse replacement If the fuse blows or the receiver stops functioning while oper- ating with the optional CP-18A/E, fi nd the source of the prob- lem if possible, and replace the damaged fuse with a new rated one (FGB 5 A) as shown below. D D Rapid charging with the BC-156 The optional BC-156 pro[…]

• Страница 24

  11 FREQUENCY AND CHANNEL SETTING 3 ■ Mode selection D D VFO mode VFO mode is used for the desired frequency setting within the frequency coverage. ➥ Push [VFO MHz] to select VFO mode. What is VFO? VFO is an abbreviation of V ariable Frequency Oscillator . Fre- quencies for receiving are generated and controlled by the VFO. D D Memory mode/PreSe[…]

• Страница 25

  12 3 FREQUENCY AND CHANNEL SETTING 3 ■ Operating band selection The receiver can receive the AM broadcast, HF bands, 50 MHz, FM broadcast, VHF air , 144 MHz, 300 MHz, 400 MHz, 800 MHz,* 1200 MHz or 2400 MHz. ➥ In VFO mode, push [BAND] several times to select the de- sired frequency band. • If the other than VFO mode is selected, such as a mem[…]

• Страница 26

  13 3 FREQUENCY AND CHANNEL SETTING • A vailable frequency bands B AND B AND AM broadcast band HF band 50 MHz band 800 MHz band 400 MHz band FM broadcast band VHF air band 144 MHz band 300 MHz band 1200 MHz band 2400 MHz band : Push : Rotating while pushing Initial frequencies shown will differ according to version. AM MODE AM MODE FM MODE WFM MOD[…]

• Страница 27

  14 3 FREQUENCY AND CHANNEL SETTING 3 ■ Setting a tuning step The tuning step can be selected for each frequency band in- dependently , however , the tuning steps, 8.33 kHz and 9 kHz, only appear when setting the tuning step for the VHF air band and AM broadcast band, respectively . The following tuning steps are available for the IC-R20. • 0.01[…]

• Страница 28

  15 3 FREQUENCY AND CHANNEL SETTING D D Using the keypad The frequency can be directly set via numeral keys. • When editing a frequency outside of the fre- quency range, the previously displayed frequency is automatically recalled after editing last digit. q Push [VFO MHz] to select VFO mode, if necessary . w Enter the desired frequency via the ke[…]

• Страница 29

  16 3 FREQUENCY AND CHANNEL SETTING 3 ■ Receive mode selection Receive modes are determined by the physical properties of the radio signals. The receiver has 6 receive modes: FM, WFM, AM, LSB, USB and CW modes. The mode selection is stored independently in each band and memory channels. T ypically , AM mode is used for the AM broadcast stations (0[…]

• Страница 30

  17 BASIC OPERA TION 4 ■ Receiving Make sure charged battery pack (BP-206) or brand new al- kaline batteries are installed (p. 8). q Push [POWER] for 1 sec. to turn power ON. w Rotate [L-DIAL] (or push [ Y Y ] or [ Z Z ] ) to set the desired audio level. • The frequency display shows the volume level while setting. See the section at right for d[…]

• Страница 31

  18 4 BASIC OPERA TION 4 ■ Squelch level setting The squelch circuit mutes the received audio signal depend- ing on the signal strength. The receiver has 9 squelch levels, a continuously open setting and an automatic squelch setting. ➥ While pushing and holding [SQL] , rotate [R-DIAL] to se- lect the squelch level. •“ LEVEL 1” is loose squ[…]

• Страница 32

  ■ Attenuator function The attenuator prevents a desired signal from distorting when very strong signals are near the desired frequency or when very strong electric fi elds, such as from a broadcasting sta- tion, are near your location. The attenuator gain is about 30 dB. ➥ Push [ Ω Ω Ω Ω A TT] for 1 sec. to toggle the attenuator functi[…]

• Страница 33

  20 4 BASIC OPERA TION 4 Duplex communication uses 2 different frequencies for trans- mitting and receiving. Generally , duplex is used in communi- cation through a repeater , some utility communications, etc. During duplex operation, the transmit station frequency is shifted from the receive station frequency by the offset fre- quency . Repeater in[…]

• Страница 34

  21 4 BASIC OPERA TION ■ AFC function The AFC (Automatic Frequency Control) function tunes the displayed frequency automatically when an off-center fre- quency is received. It activates in FM/WFM modes only with single band operation. ➥ Push [0 AFC] to toggle the AFC function ON and OFF . • “AFC” appears when the AFC function is in use. NO[…]

• Страница 35

  22 4 BASIC OPERA TION 4 ■ Band scope The band scope function allows you to visually check a spec- ified frequency range. Sweep range can be selected from ±1 4k Hz through ± 1400 kHz. q Set the desired frequency as band scope center frequency . w While pushing and holding [2 SWEEP] , rotate [R-DIAL] to select the sweep steps, if desired. •A va[…]

• Страница 36

  23 4 BASIC OPERA TION ■ [DIAL] function assignment The frequency control dial can be traded with an audio volume control dial or [ Y Y ] / [ Z Z ] keys to suit your preference. ➥ Push [1 DIAL.SEL] for 1 sec. to toggle the dial function from tuning dial and audio volume. • Single band operation • Dualwatch operation √ MODE ANL AFC TSQL FM […]

• Страница 37

  24 5 DUAL W A TCH OPERA TION 4 5 ■ Main band selection ➥ Push [MAIN/SUB] momentarily to select the upper band or lower band as main band (operating band) alternately . ■ Band exchange ➥ Push [MAIN/SUB] for 1 sec to exchange the upper band’ s frequency and lower band’s frequency . • The A-side is upper side on the display , and B-side […]

• Страница 38

  25 5 DUAL WA TCH OPERA TION ■ Setting audio volume q Push [DUAL W A TCH] for 1 sec. to enter the dualwatch op- eration, if necessary w Push and hold [SQL] , p ush [ Y Y ] or [ Z Z ] to adjust the audio level for the main band. • Pushing and holding either key changes the audio level continu- ously . • The display shows the volume level while […]

• Страница 39

  26 6 MEMOR Y CHANNELS ■ General description The receiver has 1050 memory channels including 50 scan edge memory channels (25 pairs) for storage of often-used frequencies. And a total of 26 memory banks, A to Z are avail- able for usage by group, etc. Up to 100 channels can be as- signed into a bank. D D Memory channel contents The following infor[…]

• Страница 40

  27 6 MEMORY CHANNELS ■ Memory bank setting The IC-R20 has a total of 26 banks (A to Z) . Regular memory channels, 000 to 999, are assigned into the desired bank for easy memory management. q Push [MR S.MW] for 1 sec. to select the select memory write condition. •1 short and 1 long beep sound. •“ µ µ ” indicator blinks. w Rotate [R-DIAL][…]

• Страница 41

  28 6 MEMORY CHANNELS ■ Memory bank selection q Push [MR S.MW] to select memory mode. w While pushing [BAND] , rotate [R-DIAL] to select the de- sired bank (A to Z) . •T he bank can also be selected by pushing [BAND] several times. • Only programmed banks are displayed. e Rotate [R-DIAL] to select the bank channel. • Only programmed channels[…]

• Страница 42

  29 6 MEMORY CHANNELS ■ Programming memory/bank name Each memory channel can be programmed with an alphanu- meric channel name for easy recognition and can be indicated independently by channel. Names can be a maximum of 8 characters. q Push [MR S.MW] to select memory mode. w Rotate [R-DIAL] to select the desired memory channel. e Push [MR S.MW] f[…]

• Страница 43

  30 6 MEMORY CHANNELS D D A vailable characters ■ Selecting memory/bank name indication During memory mode operation, one of the programmed memory name or bank name can be displayed below the fre- quency indication. q Push [MR S.MW] to select memory mode. • Push [BAND] several times to select the desired bank group. w While pushing [6 M.N] , rot[…]

• Страница 44

  31 6 MEMORY CHANNELS ■ Copying memory contents This function transfers a memory channel’s contents to VFO (or another memory channel). This is useful when searching for signals around a memory channel frequency and for re- calling the offset frequency , subaudible tone frequency etc. D Memory ➪ VFO q Select the memory channel to be copied. ?[…]

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  32 6 MEMORY CHANNELS ■ Memory clearing Contents of programmed memories can be cleared (blanked), if desired. q Push [MR S.MW] for 1 sec. to select the select memory write condition. •1 short and 1 long beeps sound. •“ µ µ ” indicator blinks. • Do not hold [MR S.MW] for more than 2 sec. otherwise the memory contents will be copied to V[…]

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  33 6 MEMORY CHANNELS ■ Erasing/transferring bank contents The bank contents of programmed memory channels can be cleared or reassigned to another memory bank. INFORMA TION: Even if the memory bank contents are cleared, the memory channel contents still remain pro- grammed. q Select the desired bank contents to be transferred or erased from the ba[…]

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  34 7 SCAN OPERA TION 6 ■ Scan types Scanning searches for signals automatically and makes it easier to locate new stations for contact or listening purposes. There are 7 scan types and 4 resume conditions to suit your operating needs. The scan speed is at 100 ch/sec. (approx.) for VFO scan, 20 ch/sec. (approx) for memory scan. FULL SCAN (p. 35) R[…]

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  35 7 SCAN OPERA TION ■ Full/band/programmed scan q Select VFO mode with [VFO MHz] . • Select the desired frequency band with [BAND] , if desired. w Set the squelch level. e While pushing and holding [MODE SCAN] , rotate [R-DIAL] to select the desired scanning type. • “ALL” for full scan; “BAND” for band scan, “PROG-xx” for pro- gr[…]

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  36 7 SCAN OPERA TION ■ Scan edges programming Scan edges can be programmed in the same manner as memory channels. Scan edges are programmed into scan edges, 00A/00B to 24A/24B, in memory channels. q Push [VFO MHz] to select VFO mode. w Set the desired frequency: ➥ Select the desired band with [BAND] . ➥ Set the desired frequency with [R-DIAL][…]

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  37 7 SCAN OPERA TION ■ Memory/bank/all bank scan q Select memory mode with [MR S.MW] . •S elect the desired bank with [BAND] for bank scan. w Set the squelch level. e While pushing and holding [MODE SCAN] , rotate [R-DIAL] to select the desired scanning type. • “ALL” for all bank scan; “BANK-LINK” for bank link scan or “BANK-x” fo[…]

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  38 7 SCAN OPERA TION ■ Auto-memory write scan This scan is useful for searching a speci fi ed frequency range and automatically storing busy frequencies into memory channels. The auto-memory write scan is performed with any VFO scan types (ALL, BAND, PROG). q Select VFO mode with [VFO MHz] . w Push and hold [MODE SCAN] to enter scanning type se-[…]

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  39 7 SCAN OPERA TION Memory channels can be set to be skipped for memory skip scan. In addition, memory channels can be set to be skipped for both memory skip scan and frequency skip scan. These are useful to speed up the scan interval. q Select a memory channel: ➥ Push [MR S.MW] to select memory mode. ➥ Rotate [R-DIAL] to select the desired ch[…]

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  40 7 SCAN OPERA TION D D Scan pause timer The scan pauses when receiving signals according to the scan pause time. It can be set from 2 to 20 sec. or unlimited. q Push [8 SET] for 1 sec. to enter set mode. w Rotate [R-DIAL] to select “SET EXP AND,” then push [8 SET] . e Rotate [R-DIAL] to turn the expand set mode selection ON, then push [8 SET][…]

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  41 7 SCAN OPERA TION D D Scan resume timer The scan restarts after the signal disappears according to the resume time. It can be set from 0–5 sec. or unlimited. q Push [8 SET] for 1 sec. to enter set mode. w Rotate [R-DIAL] to select “SET EXP AND,” then push [8 SET] . e Rotate [R-DIAL] to turn the expand set mode selection ON, then push [8 SE[…]

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  42 8 PRIORITY W A TCH ■ Priority watch types Priority watch checks for signals on the frequency every 5 sec. while operating on a VFO frequency or scanning. The receiver has 3 priority watch types to suit your needs. The watch resumes according to the selected scan resume condition. See the left page for details. NOTE: If the pocket beep function[…]

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  43 8 PRIORITY W A TCH ■ Priority watch operation D D Memory channel watch and memory scan watch q Select VFO mode; then, set an operating frequency . w Set the watching channel(s). For memory channel watch: Select the desired memory channel. For memory scan watch: Select memory mode, or the desired bank group; then, push [MODE SCAN] for 1 sec. to[…]

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  44 8 PRIORITY W A TCH D D VFO scan watch q Select memory mode. • Select a memory bank, if desired. w Push [MODE SCAN] for 1 sec. to start memory/bank scan, if desired. While scanning memory/bank channels: Starts memory/bank scan fi rst. Memory/bank scan can- not be started after VFO scan is started. e Push [8 SET] for 1 sec. to enter set mode. r[…]

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  45 COMFORT ABLE RECEIVING 9 ■ T one/DTCS squelch operation The tone or DTCS squelch opens only when receiving a sig- nal with the same pre-programmed subaudible tone or DTCS code, respectively . Y ou can silently wait for the speci fi ed sig- nal using the same tone. q Set the desired frequency in FM mode. w While pushing [7 TONE] , rotate [R-DI[…]

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  46 9 COMFORT ABLE RECEIVING ■ T one squelch frequency/DTCS code setting 88.5 Hz and 023 is set as the default for the tone squelch fre- quency and the DTCS code, respectively . The frequency and code can be selected as desired. q Push [8 SET] for 1 sec. to enter set mode. w Rotate [R-DIAL] to select “SET EXP AND,” then push [8 SET] . e Rotate[…]

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  47 9 COMFORT ABLE RECEIVING ■ DTCS polarity setting As well as the code setting, the polarity setting is also avail- able for the DTCS operation. When a different polarity is set, the DTCS never releases audio mute even when a signal with matched code number is received. q Push [8 SET] for 1 sec. to enter set mode. w Rotate [R-DIAL] to select “[…]

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  48 9 COMFORT ABLE RECEIVING ■ T one scan By monitoring a signal that is being operated with pocket beep, tone or DTCS squelch function, you can determine the tone frequency or DTCS code necessary to open a squelch. q Set the frequency to be checked for a tone frequency or code. w T urn the desired tone type, tone squelch or DTCS, ON by holding [7[…]

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  49 SET MODE 10 ■ General Set mode is used for programming infrequently changed val- ues or conditions of functions. In addition, the IC-R20 has an expanded set mode which is used for programming even more infrequently changed val- ues or conditions of functions. When turning the expanded set mode OFF , only about one third of the set mode items a[…]

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  50 10 SET MODE ■ Set mode items The following items are available in the set mode and ex- panded set mode. D D General set mode items D D Expanded set mode items † A vailable for the USA version only . *** — SET — MODE — *** — DTCS — CODE >TONE — FREQ — DUPLEX — OFFSET — FREQ — SCOPE — AF — OUTPUT — SCAN — STOP — BEEP —————- *** — […]

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  51 10 SET MODE D D Priority watch T urn the priority watch or priority beep (priority watch with beep emission capability) ON. (default: OFF) •O N: Start priority watch after exiting set mode. • BELL : Emits beeps and blinking “ S ” indicator when a signal is received on the priority frequency . D D Key-touch beep The key-touch beep can be […]

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  52 10 SET MODE D D Power save The power save function reduces the current drain to con- serve battery power . This power save function can be turned OFF , if desired. In the default setting (“AUTO” selection), the power save func- tion is activated in 1:4 (125 msec.: 500 msec.) ratio when no sig- nal is received for 5 sec. The ratio becomes 1:8[…]

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  53 10 SET MODE D D AM antenna selection This setting is activated only for the AM broadcast band, 0.495–1.620 MHz (differ according to version) reception. • EXT : Use the antenna connected to the antenna con- nector . (default) • BAR : Use the internal bar antenna for AM broadcast band reception. D D FM antenna selection This setting is activ[…]

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  54 10 SET MODE D D Dial speed acceleration The dial speed acceleration automatically speeds up the tun- ing dial speed when rotating [R-DIAL] rapidly . • OFF : The dial speed acceleration is turned OFF . •O N: The dial speed acceleration is tuned ON. (default) D D Monitor key action The monitor key , [SQL] , can be set as a ‘sticky’ key . W[…]

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  55 10 SET MODE D D Scan pause timer Selects the scan pause time. When receiving signals, the scan pauses according to the scan pause time. • 2–20 : Scan pauses for 2–20 sec. on a received signal, and selected in 2 sec. steps. (default: 10 sec.) • HOLD : Scan pauses on a received signal until it disap- pears. Rotate [R-DIAL] to resume manual[…]

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  56 10 SET MODE D D Scope audio output Sets the audio output function while scope operation. The scope audio output is used for fi nding out the signals while scope function are modulated, unmodulated or beet signal etc. D D Offset frequency Sets the duplex offset frequency for each frequency band in- dependently within 0 to 159.99999 MHz range. Du[…]

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  57 10 SET MODE D D T one frequency Sets subaudible tone frequency for tone squelch operation. T otal of 50 tone frequencies (67.0–254.1 Hz) are available. (default: 88.5 Hz) •A vailable subaudible tone frequencies D D DTCS code Sets DTCS code for DTCS squelch operation. T otal of 104 codes (023–754) are available. (default: 023) •A vailable[…]

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  58 10 SET MODE 10 D D Memory bank link Sets the linked bank for the bank-link scan. (default: All banks are ON) q Rotate [R-DIAL] to select the bank that you want to change setting. w Push [8 SET] for 1 sec. to enter the bank link setting con- dition. e Rotate [R-DIAL] to select the setting, then push [8 SET] . r Rotate [R-DIAL] to select next bank[…]

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  59 10 SET MODE D D CI-V address To distinguish equipment, each CI-V transceiver/receiver has its own Icom standard address in hexadecimal code. The IC- R20’s address is “6C.” When 2 or more IC-R20s are connected to an optional CT -17 CI — V LEVEL CONVERTOR , set a different address for each IC- R20 in the range “01” to “7F .” (default[…]

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  60 11 OTHER FUNCTIONS ■ Antenna selection The IC-R20 has an internal bar antenna installed for receiving AM broadcast band (0.495–1.620 MHz; differ according to version) signals. In addition, the connected earphone’s cable can be used as an antenna for receiving FM broadcast band (76.000–107.995 MHz; differ according to version) signals. D […]

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  61 11 OTHER FUNCTIONS D D W eather channel selection q Push [MR S.MW] several times to select the weather chan- nel group. w Rotate [R-DIAL] to select the desired weather channel. e Push [VFO MHz] to return to VFO mode, or push [MR S.MW] to select other mode to exit the weather channel. D D We ather alert function NOAA broadcast stations transmit w[…]

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  62 11 OTHER FUNCTIONS ■ Data cloning Cloning allows you to quickly and easily transfer the pro- grammed contents from a personal computer to a receiver using the optional CS-R20 CLONING SOFTWARE . D Cloning using a personal computer Data can be cloned to and from a personal computer (Mi- crosoft ® Windows ® 98/Me/2000/XP) using the optional CS-[…]

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  63 11 OTHER FUNCTIONS D Cloning error NOTE: DO NOT push any key on the receiver during cloning. This will cause a cloning error . When the display appears as below , a cloning error has oc- curred. In such a case, the receiver automatically performs ALL RESET while turning power OFF and ON. ■ Auto power-off function The IC-R20 can be set to autom[…]

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  64 11 OTHER FUNCTIONS ■ IC recorder The IC-R20 has an IC recorder of up to 32 tracks. The maxi- mum recording length is about 260 minutes. D D Recording a received audio q Push [ REC] momentarily to start recording. • Red LED below the [ REC] lights ON. w Push [ REC] to pause to record or push [ ■ ≈ ≈ ] to stop recording. • While pausin[…]

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  65 11 OTHER FUNCTIONS • Playback speed setting The playback speed can be selected from 5 speeds. q Push [ ■ ≈ ≈ ] for 1 sec. to enter the playback speed set mode. w Rotate [R-DIAL] to select the desired playback speed, then push [ ■ ≈ ≈ ] . • x x 0 0 . . 5 5 0 0 : Playback the recorded content at half speed. • x x 0 0 . . 7 7 5 5 […]

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  66 11 OTHER FUNCTIONS 11 • Automatic recording The IC-R20 has an automatic recording function. When this function is activated, the receiver will record automatically when a receiving signal appears and pause when the signal disappears. This function is very useful when you want to store an uncontinuous signal. q Push [ REC] for 1 sec. to enter t[…]

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  67 11 OTHER FUNCTIONS ■ Partial reset If you want to initialize the operating conditions (VFO fre- quency , VFO settings, set mode contents) without clearing the memory contents, a partial resetting function is available for the receiver . ➥ While pushing [VFO MHz] , turn the power ON to partially reset the receiver . ■ All reset The function[…]

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  68 12 CONTROL COMMAND 11 12 ■ General The IC-R20 can be connected to a PC via the PC’s RS-232C port using an optional CT -17 CI-V LEVEL CONVERT OR . This allows you to control the receiver from the PC and/or transfer data from the receiver to the PC. Control is provided via Icom’s CI-V Communication Interface. An appropriate application for C[…]

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  69 12 CONTROL COMMAND CT-1 7 Power supply 9–15VDC RS-232C cable IC-R20 to [SP/CI-V] Computer Optional BC-25 CI-V connections example CI-V compatible transceiver CI-V compatible transceiver 3.5(d) mm GND I/O GND I/O 3-conductor 3.5(d) mm plug must be used. 2-conductor 3.5(d) mm plug[…]

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  70 13 FREQUENCY T ABLE CH Freq. 40 628.75 41 636.75 42 644.75 43 652.75 44 660.75 45 668.75 46 676.75 47 684.75 48 692.75 49 700.75 50 708.75 51 716.75 52 724.75 53 732.75 54 740.75 55 748.75 56 756.75 57 764.75 58 772.75 59 780.75 60 788.75 61 796.75 62 804.75 63 812.75 64 820.75 65 828.75 66 836.75 67 844.75 68 852.75 69 860.75 CH Freq. 1 46.75 2[…]

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  71 13 FREQUENCY T ABLE D D China channels (unit: MHz) CH Freq. 1 56.25 2 64.25 3 72.25 4 83.75 5 91.75 6 174.75 7 182.75 8 190.75 9 198.75 10 206.75 11 214.75 12 222.75 13 477.75 14 485.75 15 493.75 16 501.75 17 509.75 18 517.75 19 525.75 20 533.75 21 541.75 22 549.75 23 557.75 24 565.75 25 613.75 26 621.75 27 629.75 28 637.75 29 645.75 30 653.75 3[…]

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  72 13 FREQUENCY T ABLE D D Indonesian channels (unit: MHz) CH Freq. 1A 53.75 2 60.75 3 67.75 4 180.75 5 187.75 6 194.75 7 201.75 8 208.75 9 215.75 10 222.75 11 229.75 21 476.75 22 484.75 23 492.75 24 500.75 25 508.75 26 516.75 27 524.75 28 532.75 29 540.75 30 548.75 31 556.75 32 564.75 33 572.75 34 580.75 35 588.75 36 596.75 37 604.75 38 612.75 39 […]

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  73 13 FREQUENCY T ABLE ■ VHF marine channels (unit: MHz) CH Ship Ship No. Transmit Receive 01 156.050 160.650 01A 156.050 156.050 02 156.100 160.700 03 156.150 160.750 03A 156.150 156.150 04 156.200 160.800 04A 156.200 156.200 05 156.250 160.850 05A 156.250 156.250 06 156.300 156.300 07 156.350 160.950 07A 156.350 156.350 08 156.400 156.400 09 15[…]

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  74 13 FREQUENCY T ABLE CH Frequency 1 462.5625 MHz 2 462.5875 MHz 3 462.6125 MHz 4 462.6375 MHz 5 462.6625 MHz 6 462.6875 MHz 7 462.7125 MHz ■ Other communications in the USA D D FRS (Family Radio Service) channels Dot color Frequency Red 151.625 MHz Purple 151.955 MHz Blue 154.570 MHz Green 154.600 MHz White 462.575 MHz Black 462.625 MHz Orange […]

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  75 13 FREQUENCY T ABLE Frequency Description 121.500 Emergencies 122.000 Flight Advisory Service 122.200 Flight Service Stations 122.700 Unicom— Uncontrolled airports 122.725 Unicom— Private airports 122.750 Unicom— Air-to-air communications 122.800 Unicom— Uncontrolled airports 122.900 Search & rescue training, & uncontrolled airpo[…]

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  76 13 FREQUENCY T ABLE ■ Other communications— other countries CH Frequency 1 446.00625 2 446.01875 3 446.03125 4 446.04375 5 446.05625 6 446.06875 7 446.08125 8 446.09375 D D PMR446 channels (unit: MHz) CH Frequency 59 434.525 60 434.550 61 434.575 62 434.600 63 434.625 64 434.650 65 434.675 66 434.700 67 434.725 68 434.750 69 434.775 CH Frequ[…]

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  77 13 FREQUENCY T ABLE CH Frequency 1 476.425 MHz 2 476.450 MHz 3 476.475 MHz 4 476.500 MHz 5 476.525 MHz 6 476.550 MHz 7 476.575 MHz 8 476.600 MHz 9 476.625 MHz 10 476.650 MHz 11 476.675 MHz 12 476.700 MHz 13 476.725 MHz 14 476.750 MHz 15 476.775 MHz 16 476.800 MHz 17 476.825 MHz 18 476.850 MHz 19 476.875 MHz 20 476.900 MHz D D UHF C.R.S (Citizen […]

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  78 14 MAINTENANCE PROBLEM POSSIBLE CAUSE SOLUTION REF . ■ T roubleshooting If your receiver seems to be malfunctioning, please check the following points before sending it to a service center . No power comes on. No sound comes from the speaker . Sensitivity is low and only strong signals are audible. Frequency cannot be set. No beep sound. Recei[…]

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  79 SPECIFICA TIONS 15 D D GENERAL • Frequency coverage : (Unit: MHz) USA 0.150–821.999, 851.000–866.999, 896.000–1304.999, 1305.000–3304.999 France 0.150–29.999, 50.200–51.200, 87.500–108.000, 144.000–146.000, 430.000–440.000, 1240.000–1300.000 Other than above 0.150–1304.999, 1305.000–3304.999 • Number of memory channel[…]

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  80 16 OPTIONS 15 16 ■ Options BC-149 A/D AC ADAPTOR Regularly charges the installed battery pack (BP-206). 6V DC/1 A output. Same as supplied one. (Not sup- plied with some versions.) CP-18A/E CIGARETTE LIGHTER CABLE WITH DC — DC CONVERTER Allows you to operate the re- ceiver through a 12 V cigarette lighter socket, and also charges the installed[…]

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  81 DRIVER INST ALLA TION 17 Before installing the optional CS-R20 CLONING SOFTWARE , the USB driver must be installed. Install the USB driver as follows. ■ For Microsoft ® Windows ® XP q Connect the IC-R20 to the desired USB port using with the USB cable, OPC-1382. • “Found New Hardware” appears as below . w The “Found New Hardware Wiza[…]

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  82 17 DRIVER INST ALLA TION e Click “Search for the best device in these locations,” click “Include the location in the search,” click [Browse] to select the CD drive. r The wizard starts searching for the driver and shows the dialog below during search. Specifiy Select Select Click Click 17[…]

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  83 17 DRIVER INST ALLA TION t After the driver is found the “Hardware Installation” dialog box appears as below . • Click [Continue Anyway] to start the installation. y Windows starts installing the USB driver . Click[…]

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  84 17 DRIVER INST ALLA TION 17 u After the installation is completed, click [Finish]. i The “Found New Hardware Wizard,” will come up again to install the USB serial port driver . o “Hardware Update Wizard” appears as below . Select “Install from a list or specific location (Advanced)” then click [Next>]. !0 Repeat step e to y . Clic[…]

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  85 17 DRIVER INST ALLA TION !1 The following screen appears when the installation is com- pleted. Click [Finish] to close the screen. !2 After clicking [Finish], the dialog appears as below . • Rebooting the PC is recommended. ■ For Microsoft ® W indows ® 2000 q Connect the IC-R20 to the desired USB port using with the USB cable, OPC-1382. ?[…]

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  86 17 DRIVER INST ALLA TION e Select “Search for a suitable driver for my device (recom- mended),” then click [Next>]. r Select “CD-ROM drives,” and insert the supplied CD into the CD drive, then click [Next>]. Select Click Select Click 17[…]

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  87 17 DRIVER INST ALLA TION t When the driver is found, the following dialog is displayed. Click [Next>] to start the installation. y After the installation is completed, click [Finish]. Click Click[…]

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  88 17 DRIVER INST ALLA TION u The “Found New Hardware Wizard,” will come up again to install the USB serial port driver . • “Found New Hardware” appears as below . i Repeat step w to t . o The following screen appears when the installation is com- pleted. Click [Finish] to close the screen. • Rebooting the PC is recommended. ■ For Mic[…]

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  89 17 DRIVER INST ALLA TION e Select “Search for the best driver for your device. (Recom- mended),” then click [Next>]. r Select “Specify a location,” and insert the supplied CD into the CD drive, click [Browse] to select the CD drive, then click [Next>]. Specifiy Select Click Click Select Click[…]

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  90 17 DRIVER INST ALLA TION 17 t When the driver is found, the following dialog is displayed. Click [Next>] to start the installation. y After the installation is completed, click [Finish]. • Rebooting the PC is recommended. ■ COM port con fi rmation After the driver installation, con fi rm the driver availability and the port number are r[…]

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  91 17 DRIVER INST ALLA TION t Click the [Device Manager]. • Device Manager screen appears as below . y Click “ ” of the “Ports (COM & LPT)” to display the usable COM port and the port number . u Con fi rm the USB serial port availability and the COM port number . i Close the Device Manager , System Properties screen and then Control […]

• Страница 105

  q w iR20 ■ VFO mode selection POCKET GUIDE Push [VFO MHz] momentarily to select VFO mode. ➥ ■ Receive mode selection Push [MODE SCAN] sev eral times to select the desired mode. ➥ ■ Audio le vel setting Rotate [L-DIAL] (or push [ Y ] / [ Z ] ) to set the audio lev el. ➥ ■ Squelch level setting While pushing [SQL] , rotate [R- DIAL] to […]

• Страница 106

  q w e r ■ Memory channel programming Set the desired frequency and other functions in VFO mode. Push [MR S.MW] f or 1 sec. to enter the select memory wr ite condition. • 1 shor t and 1 long beeps sound. Rotate [R-DIAL] to select the de- sired memory channel number. Push [MR S.MW] f or 1 sec. again to program the contents into the selected chann[…]

• Страница 107

  94 19 CE 19 DECLARA TION OF CONFORMITY We Icom Inc. Japan 1-1-32, Kamiminami, Hirano-ku Osaka 547-0003, Japan Declare on our sole responsibility that this equipment complies with the essential requirements of the Radio and T elecommunications T erminal Equipment Directive, 1999/5/EC, and that any applicable Essential T est Suite measurements have b[…]

• Страница 108

  1-1-32 Kamiminami, Hirano-ku, Osaka 547-0003, Japan A-6353H-1EX- w Printed in Japan © 2004 Icom Inc. <Intended Country of Use> ■ GER ■ ■ FRA ■ ESP ■ SWE ■ AUT ■ NED ■ POR ■ DEN ■ GBR ■ BEL ■ IT A ■ FIN ■ IRL ■ LUX ■ GRE ■ ■ SUI ■ ■ NOR <Intended Country of Use> ■ ■ GER ■ FRA ■ ■ ESP ■[…]

Время на прочтение7 мин

Количество просмотров9.9K

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Привет, люди будущего! Это Антон Комаров — автор команды спецпроектов МТС Диджитал. В прошлом посте я рассказывал, как сделать CI-V-кабель для управления приемником Icom IC-R20, и упоминал замечательный аппарат Icom IC-R20. Сегодня поделюсь с вами опытом его эксплуатации и расскажу, почему одни радиолюбители от него в восторге, а другие смотрят на него свысока. Поехали!

Внешний вид

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Icom IC-R20 довольно крупный, его размеры — 60×142×34,8 мм. Но весит он немного — всего 320 г. Экран монохромный, жидкокристаллический с подсветкой зеленого цвета, занимает примерно треть передней панели устройства. Остальное делят между собой клавиатура и динамик.

На верхнем торце расположен стандартный 50-омный BNC-F-разъем для подключения внешней антенны. В комплекте есть телескопическая антенна, которая может складываться на 180 градусов. Это удобно для транспортировки — правда, уже спустя 15–20 циклов сборки приходится подтягивать болтики. К разъему можно без проблем подключить любую внешнюю антенну.

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Также на верхней части устройства есть две крутилки DIAL, обозначенные как L и R. Их функции можно переназначить в настройках, но по умолчанию одна регулирует громкость, а другая служит для управления частотой.

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На левой грани устройства — три прорезиненные кнопки. Верхняя отвечает за мониторинг. Пока вы удерживаете ее нажатой, из динамика будет слышен эфир на выбранной частоте, даже если там нет полезного сигнала. Две кнопки ниже могут с одинаковым успехом работать на изменение громкости или частоты.

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На правой грани, за резиновыми заглушками, расположен совмещенный вход для наушников/CI-V, разъем для подключения блока питания и отдельный вход Mini-USB. Любопытно, что аудиоразъем может использоваться еще и в качестве антенного. Это нужно для лучшего приема вещательных FM-станций, когда возможностей встроенной магнитной антенны недостаточно.

Картинка с сайта: habr.com

На задней стороне расположен батарейный отсек. По умолчанию в него устанавливается перезаряжаемый Li-Ion-аккумулятор BP-206, точно такой же, как и в Icom IC-R3. Но главная фишка в том, что если батарейка села и у вас нет возможности ее зарядить, то при помощи специальной пластиковой вставки вы можете заменить ее на три обычных АА (LR6) батарейки или аккумулятора. Это особенно актуально для тех, кто много времени проводит на природе. Полного заряда хватит максимум на 11 часов, но при условии одновременного приема только одной частоты. Об этой особенности я расскажу чуть позже.

Картинка с сайта: habr.com

Для ношения на поясе в комплекте идет простая клипса MB-98, такая же, как и у большинства современных портативных раций. Она достаточно удобная, но у Icom есть чуть более интересный вариант этого аксессуара — поворотная быстросъемная клипса MB-86. Она позволяет легко снимать и вешать радиосканнер на пояс без необходимости отсоединения зажима.

Опционально можно докупить зарядный стакан BC-156 и чехол LC-158. Первый решает вопрос с тем, что на ровной поверхности сканер достаточно неустойчив, и помогает заряжать его, не дергая постоянно резиновую заглушку на разъеме DC. Радиосканер сам по себе довольно прочный и прошел испытания, эквивалентные военным MIL-STD 810 (C, D, E, F). При этом у него нет официального рейтинга защиты от пыли и влаги. Так что в полевых условиях его нужно дополнительно защищать при помощи чехла.

Технические характеристики

Приемный тракт

Аппаратная часть Icom IC-R20 весьма интересна. Этот радиоприемник способен принимать сигналы в очень широком диапазоне частот: 150 кГц — 3 304.999 МГц. В американской версии по требованиям законодательства вырезан спектр 800 МГц, предназначенный для мобильной связи.

Самое интересное, что аппарат может принимать две частоты одновременно. Кто-то скажет, что так может делать любой китайский трансивер за 20 долларов. Это верно, но внутри него будет простейший приемный тракт на микросхеме прямого усиления. Прием двух частот одновременно реализуется быстрым переключением между ними. То есть когда у вас есть полезный сигнал на одной частоте, то на другой он уже не будет приниматься.

Картинка с сайта: habr.com

Icom IC-R20 использует полностью другой подход. Внутри него фактически не один, а целых два приемных тракта. Это позволяет по-настоящему принимать две частоты в одно и то же время. Вместо прямого усиления используется супергетеродин с тройным преобразованием. Следующие частоты задействованы в качестве промежуточных:

1. 266.7 МГц.

2. 19.65 МГц.

3. 450 кГц.

Этим достигается высокая избирательность и отличное подавление зеркальных каналов вкупе с меньшим количеством интермодуляционных искажений и лучшей стабильностью при приеме слабых сигналов. Тем не менее такая реализация имеет несколько важных особенностей и накладывает определенные ограничения. Когда вы включаете прием двух частот одновременно, это подключает второй тракт, что фактически вдвое увеличивает энергопотребление и снижает автономность.

Дополнительным ограничением становится то, что при работе двух приемных трактов нельзя использовать весь заявленный диапазон. Максимальная частота приема и модуляция при этом ограничены:

• первый тракт (VFO A): 150 кГц — 469.999 МГц (LSB / USB / CW / AM / FM / WFM);

• второй тракт (VFO B): 118 МГц — 174.999 МГц и 330 МГц — 1 304.999 МГц (AM / FM / WFM).

То есть в режиме приема двух частот одновременно нельзя выбрать диапазон выше 1 304.999 МГц. В большинстве случаев это и не нужно, так что не стоит это рассматривать как недостаток. Если же второй радиотракт отключить, то становится доступен весь заявленный диапазон.

Еще одна особенность Icom IC-R20 — наличие встроенного аттенюатора на 20 дБ. Это требуется в ряде случаев, включая прием сильных сигналов для защиты цепей от перегрузки или для повышения разборчивости слабых сигналов на фоне мощных помех.

Сканирование

Переходим к одной из самых сильных сторон этого приемника. Он сканирует эфир со скоростью аж 100 каналов в секунду в режиме VFO. Если работа ведется по сохраненным в памяти каналам (MR), то скорость будет примерно 30 каналов/с. Это втрое выше, чем у того же Icom IC-R5.

Отдельно стоит отметить гибкость настройки параметров. Девайс позволяет сканировать:

• все частоты во всех доступных диапазонах приема;

• все частоты в границах одного выбранного диапазона;

• все частоты в границах произвольного диапазона между двумя заданными пользователем частотами;

• последовательное сканирование всех частот в заданных банках памяти;

• последовательное сканирование всех частот в заданных банках памяти за исключением тех, которые помечены как SKIP;

• последовательное сканирование всех ранее не найденных частот, кроме тех, которые помечены как SKIP.

Пожалуй, самая интересная фишка — автоматическое сохранение всех найденных частот в память. Это упрощает поиск и дает возможность потом изучить каждую обнаруженную частоту. А при необходимости еще и записать принятые сигналы на цифровой диктофон.

Память

Сразу упомяну о том, что этот радиосканер выпущен в 2006 году и производился до 2014 года. Всего в нем помещалось 1 250 каналов, которые были поделены на три сегмента:

• 1 000 обычных;

• 50 пользовательских, задающих границы диапазона для сканирования;

• 200 каналов, которые использовала только функция автосохранения при сканировании.

Картинка с сайта: habr.com

Помимо этого, IC-R20 оснащался 32 Мб флеш-памяти для записи сигналов на цифровой диктофон. В зависимости от выбранного качества — высокое, среднее или низкое — можно было записать до 260 минут, разбитых на 32 трека соответственно. Функция эта наиболее востребована при приеме сигналов со спутников, время пролета которых ограничено.

Так, например, пролет МКС занимает около 10 минут. В дни, когда с борта станции ведется трансляция изображений в формате SSTV, радиолюбители со всего мира пробуют их принять и декодировать. Если в этот момент у вас под рукой есть Icom IC-R20, можно просто включить запись сигнала одной кнопкой, а декодировать уже позднее, подключив к компьютеру.

Увы, но существенную ложку дегтя в эту бочку меда добавляет проприетарный формат записи. При попытке скачивания файлов с помощью родного софта вы получаете набор треков в ICW. Благо в сети есть бесплатная программа-конвертер, которая преобразует ICW-треки в обычные WAV-файлы. В целом, если использовать высокое качество записи, никаких проблем с декодированием сигналов SSTV не возникает.

Прочие фичи

Картинка с сайта: habr.com

Не могу не упомянуть, что в Icom IC-R20 есть примитивный, но все же спектроскоп. Сейчас, во времена расцвета SDR-приемников, этим сложно кого-то удивить, но 18 лет назад не у каждого приемника была возможность обнаружить активность на соседних частотах.

Работало это так: вы выбирали диапазон сканирования (на фотографии — 25 кГц), а приемник без звука быстро «пробегал» по нему с определенным шагом и фиксировал уровень сигнала, одновременно отрисовывая его на экране. Так формировалась картинка, где отчетливо показывались пиковые значения сигналов. Потом можно было настроиться на них и поочередно их прослушать. Конечно, это давало только очень грубое представление о том, что происходит на соседних частотах. Но это лучше, чем ничего.

Мнения радиолюбителей

Icom IC-R20 никого не оставил равнодушным. Те, кому довелось использовать этот радиосканер, отмечают его удобство и высокую скорость сканирования. 100 каналов в секунду — это было невероятно быстро для 2006 года! Конечно, последовавшая за IC-R20 модель IC-R30 увеличила этот показатель вдвое, но такое улучшение вряд ли было реально нужно.

Единственный недостаток — малый объем памяти. С учетом высокой стоимости девайса это вызывало недоумение: раз в то время уже вполне себе продавались флешки на 512 Мб, можно было воткнуть хотя бы 128 Мб. Наверное, этому есть какое-то разумное объяснение, но оно вряд ли устроило бы радиолюбителя, который отсчитал 550 долларов за это чудо техники.

Ближайшим конкурентом Icom IC-R20 был сканирующий радиоприемник AOR AR-8200. Он выпускался в трех вариантах: mk1, mk2 и mk3. Каждая следующая версия значительно расширяла возможности приемника, но все равно по некоторым параметрам не могла догнать конкурента от Icom.

Тем не менее большинство радиолюбителей отмечает, что качество звука AOR значительно выше, равно как и эргономика управления. Хотя, на мой взгляд, это дело привычки: даже слабые сигналы вполне разборчивы, а для лучшего качества можно подключить внешний динамик или наушник.

Еще одним конкурентом, кроме AOR AR-8200, был радиосканер Alinco DJ-X2000. Но по техническим характеристикам он значительно скромнее. Скорость сканирования всего 30 каналов/с в режиме VFO, а при переключении в MR так и вообще падала до 7 каналов/с. Диктофон тоже вмещал всего несколько минут записи.

Тем не менее у Alinco есть своя изюминка — встроенный частотомер. Он очень быстро определяет частоту ближайшего источника излучения и мгновенно на нее настраивается. В некоторых случаях это очень полезно. Увы, но девайсы Alinco так и не стали популярными, включая российских пользователей. Да и достать их сложнее, чем тот же Icom или AOR.

Что в итоге

Icom IC-R20 через 10 лет с момента завершения выпуска остается одним из самых удобных и функциональных радиосканеров. Даже с учетом некоторых недостатков, таких как малый объем встроенной памяти и проприетарный формат записи, он предлагал отличный набор возможностей: быстрое сканирование, широкий диапазон частот, цифровой диктофон и даже простой спектроскоп.

Основным его недостатком для 2024 года может показаться полное отсутствие поддержки цифровых видов связи. Несмотря на это, его впечатляющие характеристики, наличие двух приемных трактов и возможность удаленного управления позволяют ему оставаться актуальным. Это устройство стало своеобразным эталоном для многих радиолюбителей.

А вы когда-нибудь пользовались Icom IC-R20? Если да, расскажите об этом в комментариях.