Icom IC-R20 instruction manual Duplex operation, Setting, Rotate R-DIALto select Duplex

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■Duplex operation

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 information (offset frequency and shift di- rection) can be programmed into memory channels. (p. 26)

DSetting

qSet the receive station frequency (repeater output frequency). wPush [8 SET] for 1 sec. to enter set mode.

eRotate [R-DIAL]to select “SET EXPAND,” then push [8 SET].

BASIC OPERATION 4

IN EXPANDED SET MODE

rRotate [R-DIAL]to select “ON,” then push [8 SET].

tRotate [R-DIAL]to select “OFFSET FREQ,” then push [8 SET].

OFFSET-FREQ	4
OFFSET-FREQ
----------------
----0.000.00

yRotate [R-DIAL]to set the desired offset frequency within 0.00000–159.99999 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 the frequency in 1 MHz steps, or push for 1 sec. again then rotate [R-DIAL]to change the frequency in 10 MHz steps. (Each push for 1 sec. toggles 1 MHz or 10 MHz tuning steps.)

[R-DIAL]

DUALWATCH

SET

8

***-SET-MODE-***

----------------

-NOISE-BLANKER -ANL -AF-FILTER -AM-ANTENNA -FM-ANTENNA >SET-EXPAND

uRotate [R-DIAL]to select “DUPLEX.”

DUPLEX

----------------

>OFF --DUP -+DUP

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.

20

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Contents IR20 Auto write and 50 scan edge channels are included Some frequency bands are inhibited according to versionMay occur Equipment damage may occurOperate this device under FCC regulations PrecautionSupplied Accessories Table of Contents Battery pack installation Batteries installationQuick Reference Guide PreparationsSwivel belt clip Option Belt clipThird-party antennas may in- crease receiver performance AntennaAbout default setting Charging the batteryYour ﬁrst scanning ExperienceAdjusting squelch level Adjusting audio levelBasic operation Turning on the receiverReceive mode selection Setting frequencyMemory programming Selecting a memory channelProgramming scan edges Writing a memory channel Programmed scan operationSelecting a scan edge channel B Selecting a scan edge channel aCancelling scan Starting scan Select VFO modeStarting scan Selecting a scanning typeFront, top and side panels Panel DescriptionULEFT Dial L-DIAL EPOWER KEY PowerIRIGHT Dial R-DIAL QDUALWATCH/CLEAR KEY DualwatchMODE/SCAN KEY Mode Scan Or 10 MHz tuning steps pVOLUME/DIAL KEY 1 DIAL.SEL VFO/MHz KEY VFO MHzInputs digit ‘5’ for frequency input, memory Push for 1 sec. to enter the set modeInputs digit ‘0’ for frequency input, memory Inputs digit ‘8’ for frequency input, memory@2STOP/PLAY ≈ WDUPLEX Indicators p QBATTERY IndicatorESIGNAL Squelch Indicators Function displayTLOCK Indicator p RANL/NB Indicator pgsYAFC Indicator p USKIP Indicators pBattery installation Battery INSTALLATION/CHARGINGBattery caution Battery chargingRegular charging Charging cautionRapid charging with the BC-156 CP-18A/E fuse replacementMode selection Frequency and Channel SettingVFO mode Memory mode/PreSet*/TV*/Weather† channelsOperating band selection Available frequency bands 2425Setting a frequency Setting a tuning stepTuning step selection Using the dialUsing the keypad Frequency can be directly set via numeral keysEditting MHz to 1260.240 MHz Lock function Receive mode selectionWhen a signal is received Setting audio volumeBasic Operation ReceivingSquelch level setting Monitor functionPush and hold SQL to monitor the operating frequency RF gain Attenuator functionSetting Duplex operationRotate R-DIALto select Duplex NB/ANL function AFC functionSelect the sweep steps, if desired Band scopeSingle band operation Dial function assignmentOperating bands table for dualwatch operation Main band selection Band exchangeLower band’s squelch adjustment Setting audio volume Squelch level settingMemory Channels Memory channel contentsGeneral description Memory channel programmingPush MR S.MW for 1 sec. to set the channel into the bank Memory bank settingRotate R-DIALto select the bank channel Memory bank selectionRotate R-DIALto select the desired character Programming memory/bank nameSelecting memory/bank name Indication Available charactersDication type from bank name or memory name Copying memory contents Memory clearing Push MR S.MW for 1 sec. to clear the contentsErasing/transferring bank contents Scan types Scan OperationFull Scan p FREQUENCY/MEMORY Skip Function pSelect VFO mode with VFO MHz To start the scan, release Mode ScanFull/band/programmed scan Scan edges programming Release Mode Scan to start the selected scan Select memory mode with MR S.MWMemory/bank/all bank scan To stop the scan, push DualwatchDuring auto-memory write scanning Auto-memory write scanRecalling the stored frequencies Clearing the stored frequenciesSkip channel/frequency setting Push Dualwatch to exit set mode Scan pause timerScan resume condition SETScan resume timer Priority Watch Priority watch typesAbout priority beep function Push Dualwatch to cancel the watch Push Dualwatch to exit set mode and start the watchPriority watch operation Select the desired memory channelVFO scan watch qSelect memory mode 0Push Dualwatch to cancel the watch and scanWhile scanning memory/bank channels Comfortable Receiving Tone/DTCS squelch operationPush Dualwatch to stop the beeps and blinking man- ually Available Dtcs code list Tone squelch frequency/DTCS code settingPush 8 SET Available tone frequency listDtcs polarity setting Push 4 T-SCANfor 1 sec. to start the tone scan Tone scanSET Mode Expanded set mode ON/OFFGeneral Set mode items Expanded set mode itemsGeneral set mode items Key-touch beep Priority watchBeep output level Display backlightingNoise blanker Power saveANL function AF ﬁlterPower and Lock No accessible key is available, exceptAM antenna selection FM antenna selectionDefault Auto power OFFDial speed acceleration Monitor key actionScan resume timer Scan pause timerScan stop beep Turns the scan stop beep function on and OFFOffset frequency Scope audio outputDuplex direction Sets the audio output function while scope operationDtcs code Tone frequencyDtcs polarity Available subaudible tone frequenciesMemory bank link LCD contrast can be adjusted through 15 levelsLCD contrast Turns weather alert function on and OFFCI-V address CI-V baud rateCI-V transceive Other Functions RPush Dualwatch to exit set modeAntenna selection Selecting antennaWeather channel operation Turn the weather alert function OFF in set modeWeather channel selection Weather alert functionCloning using a personal computer Data cloningReceiver shows following indications Cloning error Auto power-off functionPlaying back recorded content IC recorderRecording a received audio Recording set mode Quality setting Playback speed settingErasing recorded audio Automatic recordingREC Same time, but cannot erase each track independentlyPartial reset Control Command Command tableData format CI-V compatible transceiver Control CommandTV channels Frequency TableS.A. channels Ccir channelsNew China channelsZealand ChannelsItalian channels Indonesian channelsTaiwan channels FOT channelsWeather channelsunit MHz VHF marine channelsOther communications in the USA Channels Murs channelsHF CB Citizens Band channels Wireless Microphones General aviation frequenciesCable TV IRC LPD Low Power Device channels Unit MHz Other communications- other countriesPMR446 channels unit MHz UHF C.R.S Citizen Radio Service channels Troubleshooting MaintenanceGeneral SpecificationsOptions OptionsFor Microsoft Windows XP Driver InstallationDriver Installation Windows starts installing the USB driver 0Repeat step e to y After the installation is completed, click FinishFor Microsoft Windows 2After clicking Finish, the dialog appears as belowFound New Hardware Wizard will come up as below. Click Next Select Click Driver Installation For Microsoft Windows 98/98SE/Me Select Click COM port conﬁrmation Click the Device Manager IR20 Pocket GuideRelease Mode Scan to start scan We Icom Inc. Japan Declaration ConformityKamiminami, Hirano-ku, Osaka 547-0003, Japan #07 France