ICOM orporated 269900 Amateur UHF Scanning Receiver User Manual

ICOM Incorporated Amateur UHF Scanning Receiver

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269900 User Manual

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INSTRUCTION MANUALiR20COMMUNICATIONS RECEIVERThis device complies with Part 15 of the FCC rules. Operation is sub-ject to the following two conditions: (1) This device may not causeharmful interference, and (2) this device must accept any interferencereceived, including interference that may cause undesired operation.WARNING: MODIFICATION OF THIS DEVICE TO RECEIVE CEL-LULAR RADIO TELEPHONE SERVICE SIGNALS IS PROHIBITEDUNDER FCC RULES AND FEDERAL LAW.

RWARNING! NEVER operate the receiver with a ear-phone, headphones or other audio accessories at high vol-ume levels. Hearing experts advise against continuous highvolume operation. If you experience a ringing in your ears, re-duce the volume level or discontinue use.RWARNING! NEVER connect the receiver to an ACoutlet. This may pose a fire hazard or result in an electricshock.RWARNING! NEVER operate the receiver while dri-ving a vehicle. Safe driving requires your full attention—any-thing less may result in an accident.RWARNING! NEVER throw a battery cell or batterypack into a ﬁre since as internal battery gas can cause explo-sion.RWARNING! NEVER disassemble the battery pack.If the battery cell’s internal material (electrolyte liquid) getsinto your eyes, wash your eyes with water and obtain treat-ment from an eye doctor immediately.NEVER connect the receiver to a power source of morethan 6 V DC directly. This will damage the receiver.NEVER connect the receiver to a power source using re-verse polarity. This will damage the receiver.NEVER expose the receiver to rain, snow or any liquids.The receiver may be damaged.NEVER operate or touch the receiver with wet hands. Thismay result in an electric shock or damage the receiver.NEVER solder the battery cell. This may damage the bat-tery.AVOID using or placing the receiver in direct sunlight or inareas with temperatures below –10°C (+14˚F) or above+60°C (+140˚F).AVOID the use of chemical agents such as benzine or al-cohol when cleaning, as they can damage the receiver’s sur-faces.Even when the receiver power is OFF, a slight current stillﬂows in the circuits. Remove batteries from the receiver whennot using it for a long time. Otherwise, the installed batterieswill become exhausted, and will need to be recharged.RESPECT other peaple’s privacy. Information overheardbut not intended for you cannot lawfully be used in any way.For U.S.A. onlyCAUTION: Changes or modiﬁcations to this device, not ex-pressly approved by Icom Inc., could void your authority tooperate this device under FCC regulations.iiPRECAUTION

iiiSUPPLIED ACCESSORIESqAntenna (FA-B04RE) ………………………………………1wBelt clip (MB-98)…………………………………………1 seteBattery spacer ………………………………………………1rHand strap …………………………………………………1tBattery pack* (BP-206) ……………………………………1yAC adaptor*(BC-149A/D) …………………………………1(The shape of the BC-149A and BC-149D are different.)*Not supplied with some versions.OPERATING THEORYElectromagnetic radiation which has frequencies of20,000 Hz (20 kHz*) and above is called radio frequency (RF)energy because it is useful in radio transmissions. The IC-R20 receives RF energy from 0.150 MHz* to 3304.999 MHzand converts it into audio frequency (AF) energy which in turnactuates a loudspeaker to create sound waves. AF energy isin the range of 20 to 20,000 Hz.*kHz is an abbreviation of kilohertz or 1000 hertz, MHz is abbreviationof megahertz or 1,000,000 hertz, where hertz is a unit of frequency.OPERATING NOTESThe IC-R20 may receive its own oscillated frequency, result-ing in no reception or only noise reception, on some frequen-cies.The IC-R20 may receive interference from extremely strongsignals on different frequencies or when using an externalhigh-gain antenna.qw eyrt

ivTABLE OF CONTENTS 123456789101112131415FOREWORD .................................................. iIMPORTANT .................................................. iEXPLICIT DEFINITIONS ................................ iPRECAUTION ............................................... iiSUPPLIED ACCESSORIES ......................... iiiOPERATING THEORY ................................. iiiOPERATING NOTES ................................... iiiTABLE OF CONTENTS ................................ ivQUICK REFERENCE GUIDE .................. I–VI■Preparation ............................................. I1 PANEL DESCRIPTION ........................ 1–7■Front, top and side panels .................... 1■Function display .................................... 62 BATTERY CHARGING ...................... 8–10■Battery installation ................................. 8■Caution .................................................. 9■Battery charging .................................... 93 FREQUENCY AND CHANNEL SETTING.......................................................... 11–16■Mode selection..................................... 11■Operating band selection..................... 12■Setting a tuning step............................ 14■Setting a frequency.............................. 14■Selecting a memory channel ............... 10■Receive mode selection ...................... 16■Lock function ....................................... 164 BASIC OPERATION ........................ 17–23■Receiving............................................. 17■Setting audio volume ........................... 17■Squelch level setting............................ 18■Monitor function ................................... 18■Attenuator function .............................. 19■RF gain ................................................ 19■Duplex operation ................................. 20■AFC function........................................ 21■NB/ANL functions ................................ 21■Band scope.......................................... 22■[DIAL] function assignment.................. 235 DUALWATCH OPERATION ............ 24–25■Setting audio volume ........................... 24■Squelch level setting............................ 24■Main band selection............................. 25■Band exchange.................................... 256 MEMORY CHANNELS ..................... 26–33■General description ............................. 26■Memory channel programming............ 26■Memory bank setting ........................... 27■Memory bank selection........................ 28■Programming memory/bank name ...... 29■Selecting memory/bank name indication..... 30■Copying memory contents................... 31■Memory clearing .................................. 32■Erasing/transferring bank contents...... 337 SCAN OPERATION ......................... 34–41■Scan types........................................... 34■Full/band/programmed scan................ 35■Scan edges programming ................... 36■Memory/bank/all bank scan................. 37■Auto-memory write scan...................... 38■Skip channel/frequency setting............ 39■Scan resume condition ........................ 407 PRIORITY WATCH .......................... 42–44■Priority watch types ............................. 42■Priority watch operation ....................... 439 COMFORTABLE RECEIVING.......... 45–48■Tone/DTCS squelch operation............. 45■Tone squelch frequency/DTCS code set-ting....................................................... 46■DTCS polarity setting........................... 47■Tone scan ............................................ 4810 SET MODE ...................................... 49–59■General................................................ 49■Set mode items.................................... 5011 OTHER FUNCTIONS ....................... 60–67■Antenna selection ................................ 60■Weather channel operation ................. 61■Data cloning ........................................ 62■Auto power-off function........................ 63■IC recorder........................................... 64■Partial reset ......................................... 67■All reset ............................................... 6812 CONTROL COMMAND ................... 68–69■General................................................ 68■Data format.......................................... 68■Command table ................................... 6813 FREQUENCY TABLE ...................... 70–61■TV channels......................................... 70■VHF marine channels .......................... 73■Weather channels................................ 73■Other communications in the USA ...... 74■Other communications— other countries............................................................. 7614 MAINTENANCE ..................................... 78■Troubleshooting ................................... 7815 SPECIFICATIONS ................................. 7916 OPTIONS ............................................... 8016

IQUICK REFERENCE GUIDE■PreparationDBattery installationqRemove the battery cover from the receiver.wInstall 3 R6(AA) size alkaline cell batteries.• Be sure to observe the correct polarity.Keep battery the contacts clean. It’s a good idea to cleanthe battery terminals once a week.DBelt clipConveniently attaches to your belt.Attach the belt clip using the supplied screws.DHandstrapSlide the handstrap through the loop on the top of the rearpanel as illustrated at below. Facilities carrying.qwe

IIQUICK REFERENCE GUIDEDDAntennaInsert the supplied antenna into theantenna connector and screw downthe antenna as shown at right.NEVER hold the antenna when car-rying the receiver.Keep the jack cover attached whenjack is not in use to protect the con-nectors from dust and moisture.✔For your informationThird-party antennas may in-crease receiver performance.DCharging the batteryqInstall the battery pack (BP-206).wPlug the AC adaptor into an AC outlet.eInsert the adaptor plug into the [DC] jack of the receiver.RRWARNING!:NEVER charge the alkaline batteries. IC-R20to [DC]jackOptional CP-18A/ECigarette lighter cable with DC-DC converterAC adapterBC-149A/Dto cigarette lighter socketto AC outletQuick reference guide

■Front, top and side panelsqANTENNA CONNECTOR (p. II)Connects the supplied antenna.wSQUELCH KEY [SQL] (p. 18)➥Push and hold to temporarily open the squelch andmonitor the operating frequency.➥While pushing this key, rotate the tuning dial* to adjustthe squelch level.eUP/DOWN KEYS [YY]/[ZZ]Adjust audio volume level.* (p. 17)rUSB JACK [USB]Connect a PC via the optional OPC-1382 CLONINGCABLE for Data/Audio cloning.tEXTERNAL DC-IN CONNECTOR [DC] (p. 9)Connects an AC adaptor or an optional cigarette lightercable for both charging the installed re-chargeable batterypack and operating. yEXTERNAL SPEAKER CONNECTOR [SP/CI-V]➥Connect an optional earphone or headphone.The internal speaker will not function when any exter-nal equipment is connected. (See p. 80 for a list ofavailable options.)➥Connect an optional CT-17 for remote control operation.(p. 68)qwertyuiKEYPAD1PANEL DESCRIPTION1

21PANEL DESCRIPTION1uLEFT DIAL [L-DIAL]➥During single band operation, rotate to adjust audio vol-ume level.* (p. 17)➥During dualwatch operation, activates as the tuning dialfor upper side on the display.*iRIGHT DIAL [R-DIAL]➥Rotate to select the operating frequency.* (p. 12)➥While scanning, changes the scanning direction.*(p. 26)➥While pushing [SQL], sets the squelch level.* (p. 18)➥While pushing [VFO MHz], sets the operating frequencyin 1 MHz or 10 MHz in VFO mode.* (p. 14)➥While pushing [BAND], selects the operating band inVFO mode.* (p. 14)➥While dualwatch operation, activates as the tuning dialfor lower side on the display.* (p. 14)KEYPADqDUALWATCH/CLEAR KEY [DUALWATCH]➥Push for 1 sec. to toggle between single bandand dualwatch operation. (p. 24)➥Clears numeric key input. (p. 15)➥Returns to previous operating condition whilesetting frequency or memory channel, or whilein set mode.➥Cancels the band scope or scan function.(pgs. 22, 35)wMAIN/SUB KEY [MAIN/SUB] (p. 25)➥During dualwatch operation, push to select theMAIN band or SUB band. ➥During dualwatch operation, push for 1 sec. toexchange the upper frequency and lower fre-quency. ePOWER KEY [PWR]Push for 1 sec. to turn the receiver power ONand OFF. rBAND KEY [BAND]➥Push to select the operating frequency band.(p. 14)BANDPOWERMAIN/SUBDUALWATCHDIAL.SEL SWEEP CENTERT-SCAN SKIP M.NTONE SET TSATT RF GAINIC Recorder1234560789BANDDUALWATCHMAIN/SUBPOWERVFOMHz MODESCAN MRS.MWSCOPELOCKRECAFC*The function of tuning control ([DIAL]) and volume control ([Y]/[Z])can be traded. See page 23 for details.

31PANEL DESCRIPTIONtVFO/MHz KEY [VFO MHz]➥Push to select VFO mode. (p. 11)➥Push for 1 sec. to toggle between the 1 MHzor 10 MHz tuning steps (p. 14yMODE/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)uMEMORY KEY [MR S.MW] ➥Push to select between memory mode, TVchannel and PreSet channel. (p. 11)➥Push for 1 sec. to enter memory write condi-tion. (p. 26)➥Push for 2 sec. to write the operating fre-quency into the selected memory channel inVFO mode.Push [MR S.MW] for 2 sec. to transfer the dis-played frequency into the VFO in memorymode. (p. 31)iVOLUME/DIAL KEY [1 DIAL SEL]➥Inputs digit ‘1’ for frequency input, memorychannel selection, etc.➥Push for 1 sec. to trade the volume control ([L-DIAL], [Y]/[Z]) and tuning control ([R-DIAL])functions. (p. 23)•√é appears when the [Y]/[Z]keys function asa volume control.oSWEEP KEY [2 SWEEP] (p. 22)➥Inputs digit ‘2’ for frequency input, memorychannel selection, etc.➥Push for 1 sec. to select the tuning step forband scope function. Once a pushing this key,the band scope function sweeps once via thenew tuning step.!0 CENTER KEY [3 CENTER] (p. 22)➥Inputs digit ‘3’ for frequency input, memorychannel selection, etc.➥Push for 1 sec. to return the display frequencyof the band frequency.!1 SCOPE KEY [SCOPE] (p. 22)➥Push to activate the band scope function dur-ing normal operating condition. Or push tostop continuous sweeping.➥Push for 1 sec. to start a continuous sweep-ing.SCOPECENTERSWEEPDIAL SELMRS.MWMODESCANVFOMHz

41PANEL DESCRIPTION12345678910111213141516!2 TONE SCAN KEY [4 T-SCAN]➥Inputs digit ‘4’ for frequency input, memorychannel 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, memorychannel selection, etc.➥Push for 1 sec. to turn the frequency skipfunction ON and OFF in VFO mode. (p. 39)• “PSKIP” appears when the frequency skip functionis in use.➥Push for 1 sec. to set the memory channel asthe following skip channel in memory mode inorder. (p. 39)• Skip channel — “SKIP” appears. • Frequency skip channel — “PSKIP” appears. • Non-skip channel — no skip indicator appears.➥Push for 1 sec. to program a paused fre-quency as a skip frequency while scanning.(p. 39)!4 MEMORY NAME KEY [6 M.N]➥Inputs digit ‘6’ for frequency input, memorychannel selection, etc.➥Push for 1 sec. to turn the memory name indi-cation ON and OFF. (p. 30)!5 AFC KEY [0 AFC]➥Inputs digit ‘0’ for frequency input, memorychannel selection, etc.➥Push for 1 sec. to turn the AFC (AutomaticFrequency Control) function ON and OFF.(p. 21)!6 TONE SQUELCH KEY [7 TONE]➥Inputs digit ‘7’ for frequency input, memorychannel selection, etc.➥Push for 1 sec. to activate the following tonesquelch functions in order.• Tone squelch — “TSQL” appears. (p. 46)• Pocket beep — “TSQLS” appears. (p. 46)• DTCS squelch — “DTCS” appears. (p. 46)• DTCS beep — “DTCSS” appears. (p. 46)• VSC function — “VSC” appears. (p. 46)• No tone operation — no tone indicator appears.!7 SET MODE KEY [8 SET]➥Inputs digit ‘8’ for frequency input, memorychannel selection, etc.➥Push for 1 sec. to enter the set mode. SETTONEAFCM.NSKIPT SCAN

51PANEL DESCRIPTION!8 TUNING STEP KEY [9 TS]➥Push for 1 sec. to select the tuning step. (p. 14)➥Inputs digit ‘9’ for frequency input, memorychannel selection, etc.!9 LOCK KEY [• LOCK]➥Inputs MHz digit for frequency input. (p. 15)➥Push for 1 sec. to toggle the lock function ONand OFF. (p. 16)• “ ” appears while the key lock function is in use.@0 REWIND/ATTENUATOR KEY [ΩΩΩΩATT]➥Push to select the track for recorded audio.(p. 64)➥Push and hold to rewind during playing therecorded audio. (p. 64)➥Push for 1 sec. to turn the attenuator functionON and OFF during normal operation. (p. 19)@1 SKIP/RF GAIN KEY [≈≈≈≈RF GAIN]➥Push to select the track for recorded audio.(p. 64)➥Push and hold to skip the recorded audio.(p. 64)➥Push for 1 sec. to enter the RF GAIN setmode. Push to select the item after selectingwith [R-DIAL]. (p. 19)@2 STOP/PLAY [■≈≈]➥Push to start the recorded audio. (p. 64)➥Push to stop the recording or playing audio.(p. 64)➥Push for 1 sec. to enter the play speed setmode. Push to select the item after selectingwith [R-DIAL]. (p. 65)@3 RECORD KEY [ REC]➥Push for 1 sec. to enter the record set mode.Push to select the item after selecting with [R-DIAL]. (p. 65)➥Push to start recording audio. (p. 64)➥Push to pause recording audio. (p. 64)RECRF GAINATTLOCKTS

61PANEL DESCRIPTION12345678910111213141516■Function displayqBATTERY INDICATOR ➥“ ” appears when the installed batteries haveample capacity.• They do not appear when operating with an external powersource.➥“ ” appears when the batteries are nearing ex-haustion.➥Scrolls while charging the installed BP-206. (p. 8)➥Battery indicator blinks when completely charged.wDUPLEX INDICATORS (p. 20)“+DUP” appears when plus semi-duplex, “–DUP” appearswhen minus semi-duplex (repeater) operation is selected.eSIGNAL SQUELCH INDICATORS➥“TSQL” appears while the tone squelch function is inuse. (p. 46)➥“DTCS” appears while the DTCS squelch function is inuse. (p. 46)➥“S” appears with the “TSQL” or “DTCS” indicatorwhile the pocket beep function (with CTCSS or DTCS) is inuse. (p. 46)➥“VSC” appears while the VSC (Voice Squelch Control)function is in use. (p. 46)145000433000-DUP-DUPFMTSQLTSQLPSPSPRIOPRIOFM000000ATTM:Amature2√µMODEAFCAFCPRIRIOTSQLTSQLFM145000PSKIP-DUP000000qqwwweeetrty!6uuuiiiooo!0!0!0!1!1!2!2!5!4!3!6!5!4!4!5ANL

71PANEL DESCRIPTIONrANL/NB INDICATOR (pgs. 21, 52)➥“ANL” appears when the ANL (Automatic Noise Limitter)function is in use. The ANL function is available only forAM mode.➥“NB” appears when the noise blanker function is in use.The noise blanker function is available while inLSB/USB/CW modes.tLOCK INDICATOR (p. 16)Appears when the lock function is activated.yAFC INDICATOR (p. 21)Appears when the lock function is activated.• The AFC function is available for single band operation only.uSKIP INDICATORS (p. 39)➥“SKIP” appears when the selected memory channel isspeciﬁed as a skip channel.➥“PSKIP” appears when the displayed frequency is spec-iﬁed as a skip frequency.iCHANNEL SECTION INDICATOR (p. 11)➥“µ” and three digits channel number appear whenmemory channel is selected.➥“å” and three digits channel number appear whenauto-memory write channel is selected.➥“TV” appears when TV channel is selected.➥“WX”* appears when weather channel is selected.*Available for the USA version only. “ å” and “TV” indi-cations appear for single band operation only.oSIGNAL STRENGTH INDICATORShows the receivng signals relative to signal strength.!0PRIORITY WATCH INDICATOR (p. 42)Appears when priority watch is in use.!1ATTENUATOR INDICATOR (p. 19)Appears when the RF attenuator is in use.!2VOLUME/DIAL EXCHANGE INDICATOR (p. 23)➥“ √” appears when the normal operation.➥“ ∂” appears when the functions of the tuning con-trol and volume control are traded.!3MEMORY/BANK NAME INDICATORShows the memory name or bank name.• This indication is available when memory name or bank name isprogrammed.!4FREQUENCY READOUTShows an operating frequency.• The smaller readout appears at right when tuning step is se-lected 0.1 kHz or 0.01 kHz steps.• The decimal point blinks during scan.!5RECEIVE MODE INDICATOR (p. 16)Shows the selected receive mode.• FM, WFM AM, LSB, USB and CW are available.!6MAIN BAND INDICATOR (p. 24)Shows the main band on upper display or lower display.• This indication appears only when dualwatch operation.

82BATTERY CHARGING12345678910111213141516■Battery installationBefore installing, or replacing the batteries, push [POWER]for 1 sec. to turn the power OFF.qRemove the battery cover from the receiver.wInstall 3 R6 (AA) size alkaline batteries.• Be sure to observe the correct polarity.Keep the battery contacts clean to avoid rust or poor con-tact. It’s a good idea to clean the battery terminals once aweek.DDBattery pack installationqRemove the battery cover from the receiver.wRemove the supplied battery spacer for R6 (AA) size bat-tery use.eInstall the Li-Ion battery pack (BP-206).• Be sure to observe the correct direction.• Charge Li-Ion battery pack before use.•Battery pack installation•Battery pack removalqwe

102BATTERY CHARGING2DDCP-18A/E fuse replacementIf the fuse blows or the receiver stops functioning while oper-ating with the optional CP-18A/E, ﬁnd the source of the prob-lem if possible, and replace the damaged fuse with a newrated one (FGB 5 A) as shown below.DDRapid charging with the BC-156The optional BC-156 provides rapid charging of batterypacks.•Charging periods: 2.5 hours (w/BP-206)CAUTION: Shorten or remove the telescoping antenna be-fore charging to prevent the receiver from overturning.If the charge indicator flashes orange, there may be aproblem with the battery pack (or charger). Reinsert thebattery pack or contact your dealer.Turn power OFF.BC-156Check the orientation.Shorten or remove the antenna.Fuse 5 A

11FREQUENCY AND CHANNEL SETTING3■Mode selectionDDVFO modeVFO mode is used for the desired frequency setting within thefrequency coverage.➥Push [VFO MHz] to select VFO mode.What is VFO?VFO is an abbreviation of Variable Frequency Oscillator. Fre-quencies for receiving are generated and controlled by theVFO.DDMemory mode/PreSet*/TV*/Weather†channelsMemory mode is used for operation of memory channelswhich have programmed frequencies. PreSet channels areused for most-often used frequencies for quick recall. *Appears only when PreSet channels/TV channels areprogrammed via the optional CS-R20.†Available for the USA version only.qPush [MR S.MW] to select the memory mode, PreSet, TVor Weather channel in sequence.wRotate [R-DIAL] to select the desired channel.• Only programmed memory channels can be selected.• Entering keypad directly can be selected the desired channel.• See p. 26 for memory programming details.√µMODE ANLAFCTSQLFM146100PSKIP-DUP001DIAL.SEL SWEEP CENTERT-SCAN SKIP M.NTONE SET TSATT RF GAINIC Recorder1234560789BANDDUALWATCHMAIN/SUBPOWERVFOMHz MODESCAN MRS.MWSCOPELOCKRECAFC“µ ” and memory channel number appear.• Memory mode indicationMRS.MWDIAL.SEL SWEEP CENTERT-SCAN SKIP M.NTONE SET TSATT RF GAINIC Recorder1234560789BANDDUALWATCHMAIN/SUBPOWERVFOMHzVFOMHzMODESCAN MRS.MWSCOPELOCKRECAFC √MODE ANLAFCTSQLFM146560PSKIP-DUP• VFO mode indication

123FREQUENCY AND CHANNEL SETTING 3■Operating band selectionThe 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.➥Push [BAND] several times to select the desired frequencyband.• When a memory mode is selected, push [VFO MHz] to selectVFO mode ﬁrst, then push [BAND] to select the desired band.➥While pushing and holding [BAND], rotating [R-DIAL] alsoselects frequency band.Available frequency bands are differ depending on version.See the speciﬁcation for details.*Some frequency ranges are inhibited for the USA versiondue to local regulation.[R-DIAL]BAND√MODE ANLAFCTSQLWFM76 000PSKIP-DUP√µMODE ANLAFCTSQLFM146100PSKIP-DUP0010√MODE ANLAFCTSQLWFM2chPSKIP-DUPTV√MODE ANLAFCTSQLFM1PSKIP-DUPWX“µ ” and memory channel number appear.• PreSet channel indication• TV channel indication• Weather channel indication (USA version only)• Memory mode indicationPreSet channel number appears.“TV” indication appears.“WX” indication appears.

133FREQUENCY AND CHANNEL SETTING • Available frequency bandsBANDBANDAM broadcast band HF band 50 MHz band800 MHz band 400 MHz bandFM broadcast bandVHF air band144 MHz band300 MHz band1200 MHz band2400 MHz band: Push: Rotating while pushingInitial frequencies shown are differ according to version.AMMODE AMMODE FMMODE WFMMODEAMMODEFMMODEFMMODEFMMODEFMMODE1620 5000 51 000 76 000118000146010370000440000800000FMMODE1295000FMMODE2425000

143FREQUENCY AND CHANNEL SETTING 3■Setting a tuning stepThe tuning step can be selected for each frequency band in-dependently , however, the tuning steps, 8.33 kHz and 9 kHz,are appeared when setting the tuning step for the VHF airband and AM broadcast band, respectively. The following tun-ing steps are available for the IC-R20.• 0.01 kHz • 0.1 kHz • 1.0 kHz • 5.0 kHz • 6.25 kHz• 8.33 kHz • 9.0 kHz • 10.0 kHz • 12.5 kHz • 15.0 kHz• 20.0 kHz • 25.0 kHz • 30.0 kHz • 50.0 kHz • 100.0 kHzDDTuning step selectionqPush [VFO MHz] to select VFO mode, if necessary.wPush [BAND] to select the desired frequency band.• Or, while pushing and holding [BAND], rotate the [R-DIAL] to se-lect the desired frequency band.ePush [9 TS] for 1 sec. to enter tuning step selecting condition.rRotate [R-DIAL] to select the desired tuning step.tPush [9 TS] to return to VFO mode.■Setting a frequencyDDUsing the dialqPush [VFO MHz] to select VFO mode, if necessary.wSelect the desired frequency band with [BAND].• Or, while pushing and holding [BAND], rotate the [R-DIAL] to se-lect the desired frequency band.eRotate [R-DIAL] to select the desired frequency.• The frequency changes according to the preset tuning steps.See the left section for setting the tuning step.• Push [VFO MHz] for 1 sec. then rotate [R-DIAL] to change thefrequency in 1 MHz steps, or push for 1 sec. again then rotate[R-DIAL] to change the frequency in 10 MHz steps. (Each pushfor 1 sec. toggles 1 MHz or 10 MHz tuning steps.)FMMODE14601000FMMODE14601000[R-DIAL] changes the frequen-cy according to the selected tuning step.While pushing [VFO MHz], [R-DIAL] changes the frequency in 1 MHz steps (default).[R-DIAL]BANDVFOMHzSET TS:5.0kHz√MODE ANLAFCTSQLFM146010PSKIP-DUP5 kHz tuning step[R-DIAL]TS9BANDVFOMHz

153FREQUENCY AND CHANNEL SETTING DDUsing the keypadThe frequency can be directly set via numeralkeys.• When editting a frequency outside of the fre-quency range, the previously displayed frequencyis automatically recalled after editting last digit.qPush [VFO MHz] to select VFO mode, ifnecessary.wEnter the desired frequency via the keypad.• Direct input can be set until 1 kHz digit, rotate[R-DIAL] to set below 1 kHz frequency afterset tuning steps, if necessary. (See the previ-ous page for setting the tuning step.)1234560789LOCKAFCDUALWATCHVFOMHzPushing [VFO MHz] omits the entry of 100 kHz and below, when you want toedit to these digits “0.” Push [DUALWATCH] to cancel the entry.AMMODE000010AMMODE000010AMMODE000 684AMMODE000684AMMODE000684FMMODE1000FMMODE12 000FMMODE126000FMMODE1260000FMMODE1260000FMMODE1260240FMMODE1260 240FMMODE1260240FMMODE126024012244668VFOMHz0AFC0AFC0AFCLOCK LOCK• Editting to 0.684 MHz • Editting to 1260 MHz • Changing 100 kHz and below.Editting 1260.000 MHz to 1260.240 MHz

163FREQUENCY AND CHANNEL SETTING 12345678910111213141516■Receive mode selectionReceive modes are determined by the physical properties ofthe radio signals. The receiver has 6 receive modes: FM,WFM, AM, LSB, USB and CW modes. The mode selection isstored independently in each band and memory channels.Typically, AM mode is used for the AM broadcast stations(0.495–1.620 MHz) and VHF air band (118–135.995 MHz),and WFM is used for FM broadcast stations (76–107.9 MHz).➥Push [MODE SCAN] several times to select the desiredreceive mode.■Lock functionTo prevent accidental frequency changes and unnecessaryfunction access, use the lock function. ➥Push [• LOCK] for 1 sec. to turn the lock function ON andOFF.• “ ” appears while the lock function is activated.•[SQL] and [YY]/[ZZ]can be used while the lock function is in usewith default setting. Either or both [SQL] and [YY]/[ZZ]keys arealso be locked in set mode. (p. 49)√MODE ANLAFCTSQLFM146010PSKIP-DUPDIAL.SEL SWEEP CENTERT-SCAN SKIP M.NTONE SET TSATT RF GAINIC Recorder1234560789BANDDUALWATCHMAIN/SUBPOWERVFOMHz MODESCAN MRS.MWSCOPELOCKRECAFC“ ” appears while the lock function is in use.LOCKDIAL.SEL SWEEP CENTERT-SCAN SKIP M.NTONE SET TSATT RF GAINIC Recorder1234560789BANDDUALWATCHMAIN/SUBPOWERVFOMHz MODESCAN MRS.MWSCOPELOCKRECAFCMODESCANWFMMODEAMMODEFMMODE76 000118000146010PSKIPPSKIPPSKIPFM modeAM modeWFM mode

184BASIC OPERATION4■Squelch level settingThe 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 squelch and “LEVEL 9” is tight squelch.• “AUTO” indicates automatic level adjustment with a noise pulsecount system.• “OPEN” indicates continuously open setting.■Monitor functionThis function is used to listen to weak signals without disturb-ing the squelch setting or to open the squelch manually evenwhen mute functions such as the tone squelch are in use.➥Push and hold [SQL] to monitor the operating frequency.• The 1st segment of the S-meter blinks.The [SQL] key can be set to ‘sticky’ operation in expandedset mode. See page 54 for details.√MODE ANLAFCTSQLFM146010PSKIP-DUPThe 1st segment blinksSQLSQUELCH:AUTO√MODE ANLAFCTSQLFM146010PSKIP-DUPSQUELCH:LEVEL9√MODE ANLAFCTSQLFM146010PSKIP-DUPAutomatic squelchMaximum level[R-DIAL]SQL

■Attenuator functionThe attenuator prevents a desired signal from distorting whenvery strong signals are near the desired frequency or whenvery strong electric ﬁelds, such as from a broadcasting sta-tion, are near your location.➥Push [ΩΩΩΩATT]for 1 sec. to toggle the attenuator functionON and OFF.• “ATT” appears when the attenuator function is in use.■RF gainThe receiver gain can be reduced with the RF gain setting.This may help to remove undesired weak signals while mon-itoring strong signals. The RF gain may be useful for setting aminimum level at which to hear signals for SSB/CW modes .➥Push [≈≈≈≈RF GAIN]for 1 sec. to enter the RF gain set-ting condition, then rotate [R-DIAL] to select the desiredRF gain level.• Normally this setting is used maximum level.• Push [DUALWATCH] to exit the RF gain setting condition.SET-RF-GAIN:MAX√MODE ANLAFCTSQLUSB14 120PSKIP-DUPSET-RF-GAIN:5√MODE ANLAFCTSQLUSB14 120PSKIP-DUPMaximum levelSetting level5[R-DIAL]RF GAINATT√MODE ANLAFCTSQLFM146010PSKIP-DUPATTDIAL.SEL SWEEP CENTERT-SCAN SKIP M.NTONE SET TSATT RF GAINIC Recorder1234560789BANDDUALWATCHMAIN/SUBPOWERVFOMHz MODESCAN MRS.MWSCOPELOCKRECAFC“AT T ” appears while the attenuator functions is in use.194BASIC OPERATION

204BASIC OPERATION4Duplex 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 isshifted from the receive station frequency by the offset fre-quency. Repeater information (offset frequency and shift di-rection) can be programmed into memory channels. (p. 26)DDSettingqSet the receive station frequency (repeater output frequency).wPush [8 SET] for 1 sec. to enter set mode.eRotate [R-DIAL] to select “SET EXPAND” item, then push[8 SET].rRotate [R-DIAL] to select “ON.”tRotate [R-DIAL] to select “OFFSET FREQ,” then push[8 SET].yRotate [R-DIAL] to set the desired offset frequency within0.00000–159.99999 MHz range, then push [8 SET].• The tuning step, selected in VFO mode, is used for setting.• Push [VFO MHz] for 1 sec. then rotate [R-DIAL] to change thefrequency in 1 MHz steps, or push for 1 sec. again then rotate[R-DIAL] to change the frequency in 10 MHz steps. (Each pushfor 1 sec. toggles 1 MHz or 10 MHz tuning steps.)uRotate [R-DIAL] to select “DUPLEX.”iRotate [R-DIAL] to select “–DUP” or “+DUP.”oPush [DUALWATCH] to exit set mode.!0Push and hold [SQL] to monitor the transmit station fre-quency (repeater input frequency) directly.DUPLEX--DUP>OFF-+DUP----------------OFFSET-FREQ----0.000.00----------------[R-DIAL]DUALWATCHSET8SET TS:5.0kHz√MODE ANLAFCTSQLFM146010P S KIP-DUP***-SET-MODE-***>SET-EXPAND-FM-ANTENNA-AM-ANTENNA-AF-FILTER-ANL-NOISE-BLANKER----------------■Duplex operationUSINGEXPANDED SET MODE

214BASIC OPERATION■AFC functionThe AFC (Automatic Frequency Control) function tunes thedisplayed frequency automatically when an off-center fre-quency is received. It activated in FM/WFM modes only withsingle band operation.➥Push [0 AFC]to toggle the AFC function ON and OFF.• “AFC” appears when the AFC function is in use.NOTE: The AFC function is not available during duwal-watch operation.■NB/ANL functionThe NB (noise blanker) function removes pulse-type noisewhen USB, LSB or CW mode is selected. The ANL (Auto-matic Noise Limitter) function reduces noise componentswhen AM mode is selected.See page 22 for setting detailsNOTE: No display indication appears during dualwatchfunction, but both functions are activate while in specificmodes.ATT√MODE ANLAFCTSQLFM1260000P S KIP-DUPATT√MODE ANLAFCTSQLFM1260000PSKIP-DUPDIAL.SEL SWEEP CENTERT-SCAN SKIP M.NTONE SET TSATT RF GAINIC Recorder1234560789BANDDUALWATCHMAIN/SUBPOWERVFOMHz MODESCAN MRS.MWSCOPELOCKRECAFC“AFC” appears while the AFC function is in use.0AFC“ ” “ ” oran off-frequency is received.appears when

224BASIC OPERATION12345678910111213141516■Band scopeThe band scope function allows you to visually check a spec-iﬁed frequency range. Sweep range can be selected from ±14kHz through ±1400 kHz.qSet the desired frequency as band scope center frequency.wWhile pushing and holding [2 SWEEP], rotate [R-DIAL] toselect the sweep steps, if desired.• Available steps are 1, 5, 6.25, 8.33, 9, 10, 12.5, 15, 20, 25, 30,50 and 100 kHz.• Each pushing [SWEEP] changes the sweep step and starts sin-gle sweeping at each times.ePush [SCOPE] momentarily to start single sweeping orpush for 1 sec. to start continuous sweeping. • Signal conditions (strengths) appear starting from the center ofthe range.rRotate [R-DIAL] to set the highlighted cursor to the de-sired waveform and set the frequency of the signal.• Push [3 CENTER] for 1 sec. to return to original sweep centerfrequency.tPush [DUALWATCH] to cancel sweeping and returns tonormal condition. ✔CONVENIENT!The scope function can also be started with the following op-eration for easy setting.qSet the desired frequency as band scope center frequency.wPush [SWEEP] for 1 sec. to start single sweeping.• Each pushing [SWEEP] changes the sweep step and starts sin-gle sweeping at each times.√MODEANLAFCTSQLFM145780PSKIPSWEEP10k-DUP[R-DIAL]SWEEP2

234BASIC OPERATION■[DIAL] function assignmentThe frequency control dial can be traded with an audio volumecontrol dial or [YY]/[ZZ]keys to suit your preference. ➥Push [1 DIAL] for 1 sec. to toggle the dial function from tun-ing dial and audio volume.•“∂” appears when [YY]/[ZZ]function as an tuning dial.•Single band operation•Dualwatch operation√MODE ANLAFCTSQLFM146560PSKIP-DUP∂145250438000AFC -DUP-DUPFMTSQLTSQLPSPSPRIOPRIOFM0000000000FM[R-DIAL][L-DIAL]DIAL.SEL1“ √” indication “ ∂” indicationFrequency, Memory channel,Audio volume [R-DIAL] Squelch level, Scanningdirection, Set mode item and condition setAudio volume setFrequency, Memory channel,[L-DIAL] Squelch level, Scanning [Y]/[Z] direction, Set mode itemand condition set“ ” indication “ ” indicationFrequency, Memory channel,Audio volume [R-DIAL] Squelch level, Scanning[L-DIAL] direction, Set mode item and condition setAudio volume setFrequency, Memory channel,[Y]/[Z]Squelch level, Scanning direction, Set mode itemand condition set

245DUALWATCH OPERATION12345678910111213141516■Setting audio volumeqPush [DUALWATCH] for 1 sec. to enter the dualwatch op-eration, if necessarywPush and hold [SQL], push [YY]or [ZZ]to adjust the audiolevel for the main band. • Pushing and holding either key change the audio level continu-ously.• The display shows the volume level while setting.While pushing either [YY]or [ZZ], rotate [L-DIAL] for upperband’s volume adjustment, or [R-DIAL] for lower band’svolume adjustment.■Squelch level settingqPush [DUALWATCH] for 1 sec. to enter the dualwatch op-eration, if necessarywWhile pushing and holding [SQL], rotate [L-DIAL] forupper band’ squelch adjustment, or rotate [R-DIAL] forlower band’s squelch adjustment.• “LEVEL 1” is loose squelch and “LEVEL 9” is tight squelch.• “AUTO” indicates automatic level adjustment with a noise pulsecount system.• “OPEN” indicates continuously open setting.145 000433 000AFC -DUP-DUPFMTSQLTSQLPSPSP RIOP RIOLSB0000000000145250438000AFC -DUP-DUPFMTSQLTSQLPSPSPRIOPRIOFM0000000000PSPSPSSQUELCH:LEVEL9438.000SQUELCH:AUTOPS145.250[R-DIAL][L-DIAL]SQLUpper band settingLower band setting145250438000AFC -DUP-DUPFMVOLVOLTSQLTSQLPSPSPRIOPRIOFM0000000000145250438000PSPS000000Upper band settingLower band settingSQL

255DUALWATCH OPERATION■Main band selection➥Push [MAIN/SUB] momentarily to select the upper bandor lower band as main band (operating band) alternately.■Band exchange➥Push [MAIN/SUB] for 1 sec to exchange the upper band’sfrequency and lower band’s frequency.145 000433 000AFC -DUP-DUPFMTSQLTSQLPSPSP RIOP RIOLSB0000000000145250438000AFC -DUP-DUPFMTSQLTSQLPSPSPRIOPRIOFM0000000000438000145250-DUP-DUPFMTSQLTSQLPSPSPRIOPRIOFM0000000000PSPSMAIN/SUB145 000433 000AFC -DUP-DUPFMTSQLTSQLPSPSP RIOP RIOLSB0000000000145250438000AFC -DUP-DUPFMTSQLTSQLPSPSPRIOPRIOFM0000000000438000145250-DUP-DUPFMTSQLTSQLPSPSPRIOPRIOFM0000000000PSPSMAIN/SUB

266MEMORY CHANNELS■General descriptionThe receiver has 1050 memory channels including 50 scanedge memory channels (25 pairs) for storage of often-usedfrequencies. 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.DDMemory channel contentsThe following information can be programmed into memorychannels:• Operating frequency (p. 14)• Receive mode (p. 16)• Duplex direction (+DUP or –DUP) with an offset fre-quency (p. 20)• Tone squelch or DTCS squelch ON/OFF (p. 45)• Tone squelch frequency or DTCS code with polarity(p. 46)• Scan skip information* (p. 39). ■Memory channel programmingqPush [VFO MHz] to select VFO mode.wSet the desired frequency:➥Select the desired band with [BAND].➥Set the desired frequency with [R-DIAL].➥Or set the desired frequency with [KEYPAD].➥Set other data (e.g. offset frequency, duplex direction, tonesquelch, etc.), if desired.ePush [MR S.MW] for 1 sec. to select the select memorywrite condition.• 1 short and 1 long beep sound.•“µ” indicator blinks.rRotate [R-DIAL] to select the desired channel.• Scan edge channel, 00A/B to 24A/B can also be selected.tPush [MR S.MW] for 1 sec.• 3 beeps sound• Memory channel number automatically increases when contin-uing to push [MR S.MW] after programming.[EXAMPLE]: Programming 145.870 MHz into memory channel 20 (blank channel).√µMODEANLAFCTSQLTSQLFMFM145870PSKIP-DUP-DUP001√µMODEANLAFCTSQLTSQLFM145870PSKIP-DUP-DUP020√µMODEANLAFCTSQLTSQLFM145870PSKIP-DUP-DUP020>CLEARCLEAR-SKIPSKIP-:OFF:OFF-MNAME:MNAME:-BNAME:-BNAME:-BANKBANK-:----:----001001µ.146.010FM>CLEARCLEAR-SKIPSKIP-:OFF:OFF-MNAME:MNAME:-BNAME:-BNAME:-BANKBANK-:----:----020020µ.--------------------------------Push for 1 sec. RotateMRS.MWPush for 1 sec.MRS.MW12345678910111213141516

276MEMORY CHANNELS■Memory bank settingThe IC-R20 has a total of 26 banks (A to Z). Regular memorychannels, 000 to 999, are assigned into the desired bank foreasy memory management.qPush [MR S.MW] for 1 sec. to select the select memorywrite condition.• 1 short and 1 long beep sound.•“µ” indicator blinks.wRotate [R-DIAL] to select the desired memory channel.eWhile pushing [8 SET], rotate [R-DIAL] to select “BANK”item.• “BANK” item can also be selected by pushing [8 SET] severaltimes.• Bank group and channel number is displayed if the selectedmemory channel has already been assigned into a bank, theprevious.rWhile pushing [BAND], rotate [R-DIAL] to select the de-sired bank group from “A” to “Z.”• The bank group can also be selected by pushing [BAND] sev-eral times.tAfter releasing [BAND], rotate [R-DIAL] to select the bankchannel number from “00” to “99.”• Vacant bank channel numbers are only be displayed.yPush [MR S.MW] for 1 sec. to set the channel into thebank.• Return to the previous indication.-BNAME:FM>BANK-:A-00012µ.146.010Bank channel is selected with [R-DIAL]-BNAME:FM>BANK-:A-00012µ.146.010Bank group is selected with BANDFM>CLEAR-SKIP-:OFF-MNAME:-BNAME:-BANK-:----012µ.146.010FM>BANK-:----012µ.146.010is pushedAfter[R-DIAL]SET8SET8MRS.MWBANDSET TS:5.0kHz√MODE ANLAFCTSQLFM146010P S KIP-DUP

286MEMORY CHANNELS■Memory bank selectionqPush [MR S.MW] to select memory mode.wWhile pushing [BAND], rotate [R-DIAL] to select the de-sired bank (A to Z).• The bank can also be selected by pushing [BAND] severaltimes.• The only programmed banks are displayed.eRotate [R-DIAL] to select the bank channel.• The only programmed channels are displayed.rTo return to regular memory condition, rotate [R-DIAL] whilepushing [BAND], or push [BAND] several times.ATT√µMODE ANLAFCTSQLFM145870PSKIP-DUPA99Bank initialBank chanel numberATT√µMODE ANLAFCTSQLFM145870PSKIP-DUP001√µMODE ANLAFCTSQLAM118000P S KIP-DUPA12√µMODE ANLAFCTSQLFM438720P S KIP-DUPY01Rotate [R-DIAL] while pushing [BAND]Appears only the programmed bank. [R-DIAL]MRS.MWBANDSET TS:5.0kHz√MODE ANLAFCTSQLFM146010P S KIP-DUP12345678910111213141516

296MEMORY CHANNELS■Programming memory/bank name Each memory channel can be programmed with an alphanu-meric channel name for easy recognition and can be indicatedindependently by channel. Names can be a maximum of 8characters.qPush [MR S.MW] to select memory mode.wRotate [R-DIAL] to select the desired memory channel.ePush [MR S.MW] for 1 sec. to select the select memorywrite condition.• 1 short and 1 long beep sound.•“µ” indicator blinks.rWhile pushing [8 SET], rotate [R-DIAL] to select “BNAME”or “MNAME” when programming the memory name or thebank name, respectively.• The item can also be selected by pushing [8 SET] several times.• After selecting the memory or bank name programming condi-tion, an under bar blinks for the ﬁrst digit.tRotate [R-DIAL] to select the desired character.• The selected character blinks.• While pushing [6 M.N], rotate [R-DIAL] to select the charactergroup.yWhile pushing [BAND], rotate [R-DIAL] to move the cur-sor to left or right.• Push [BAND] to move the cursor to right.uRepeat steps tand yuntil the desired 8-character chan-nel names are displayed.iPush [MR S.MW] for 1 sec. to program the name and exitthe channel name programming condition.• 3 beeps sound.•Available charactersA to Z, 0 to 9, (, ), ✱, +, –, ,, /, |, = and space.NOTE: One bank name can only be programmed intoeach bank. Therefore, the previously programmed bankname will be displayed when bank name indication is se-lected. And also, the programmed bank name is assignedfor the other bank channels automatically.FM-MNAME:-BANK-:C-11012µ.145.700FM>MNAME:Ric>BNAME:>BNAME:GRO-BANK-:C-11012µ.145.700Bank name Memory nameFM-MNAME:>BNAME:-BANK-:C-11012µ.145.700FM>MNAME:>BNAME:-BANK-:C-11012µ.145.700Memory name selectionBank name selectionFM>BANK-:C-11012µ.145.700

$306MEMORY CHANNELSDDAvailable characters ■Selecting memory/bank nameindicationDuring memory mode operation, one of the programmedmemory name or bank name can be displayed below the fre-quency indication.qPush [MR S.MW] to select memory mode.• Push [BAND] several times to select the desired bank group.wWhile pushing [6 M.N], rotate [R-DIAL] to select display in-dication type from bank name or memory name.ATTB:GROUP1√µMODE ANLAFCTSQLFM145700PSKIP-DUP012M:Ricky√µMODE ANLAFCTSQLFM145700PSKIP-DUP012B:GROUP1√µMODE ANLAFCTSQLFM145700PSKIP-DUP012When no memory or bank name is programmed with the selected memory chan-nel, no indication is dis-played.M.N6[R-DIAL]12345678910111213141516A B C D E F G H I J K L M N O P Q R S T U V W X Y Za b c d e f g h i j k l m n o p q r s t u v w x y z0 1 2 3 4 5 6 7 8 9‰ Ò ¨ Î ! " # $ % & ' ( ) * + , - . / : ; < = > ? @ [ \ ] ^ _ { | } ~0 1 2 4 3(space)$

ICOM orporated 269900 Amateur UHF Scanning Receiver User Manual

ICOM Incorporated Amateur UHF Scanning Receiver

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