Icom IC-R20 instruction manual Comfortable Receiving, Tone/DTCS squelch operation

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9 COMFORTABLE RECEIVING

■Tone/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. You can silently wait for the speciﬁed sig- nal using the same tone.

qSet the desired frequency in FM mode.

wWhile pushing [7 TONE], rotate [R-DIAL]to select the de- sired squelch condition from “TSQL,” “TSQLS,” “DTCS,” “DTCSS,” “VSC” and “OFF.”

•One of “TSQL,” “ TSQLS,” “DTCS,” “DTCSS” and “VSC” appears according to the squelch selection.

			-DUP TSQL	AFC			-DUP TSQL	AFC
MODE FM					MODE FM
OFF: (No indication)					Tone squelch selection
			-DUP VSC	AFC			-DUP TSQL	AFC

MODE FM					MODE FM
VSC selection					Tone squelch with pocket
					beep function selection
			-DUP DTCS	AFC			-DUP DTCS	AFC

	MODE FM				MODE FM
DTCS with pocket beep					DTCS selection
function selection

[R-DIAL]

TONE

7

-DUP TSQL AFC MODE FM ANL

145 975

PSKIP

√

TSQL appears

eWhen a signal with the matched tone is received, the squelch opens and the receiver emits audio.

When pocket beep function is activated, the receiver also emits beep tones and blinks “S”.

• Beep tones sound and “S” blinks for 30 sec.

rPush [DUALWATCH] to stop the beeps and blinking man- ually.

•“S” disappears and the pocket beep function is deactivated. tTo cancel the tone squelch or DTCS, rotate [R-DIAL]while

pushing [7 TONE] to tone indication disappears.

NOTE: The VSC (Voice Squelch Control) function opens

the squelch only when receiving a modulated signal. This

function is very useful while scanning, the VSC pauses

only when modulated signals are received. Scanning con- tinues when unmodulated or beat signals are received.

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Contents IR20 May occur Some frequency bands are inhibited according to versionAuto write and 50 scan edge channels are included Equipment damage may occurPrecaution Operate this device under FCC regulationsSupplied Accessories Table of Contents Quick Reference Guide Batteries installationBattery pack installation PreparationsBelt clip Swivel belt clip OptionAntenna Third-party antennas may in- crease receiver performanceYour ﬁrst scanning Charging the batteryAbout default setting ExperienceBasic operation Adjusting audio levelAdjusting squelch level Turning on the receiverMemory programming Setting frequencyReceive mode selection Selecting a memory channelSelecting a scan edge channel B Programmed scan operationProgramming scan edges Writing a memory channel Selecting a scan edge channel aStarting scan Starting scan Select VFO modeCancelling scan Selecting a scanning typePanel Description Front, top and side panelsIRIGHT Dial R-DIAL EPOWER KEY PowerULEFT Dial L-DIAL QDUALWATCH/CLEAR KEY DualwatchVOLUME/DIAL KEY 1 DIAL.SEL Or 10 MHz tuning steps pMODE/SCAN KEY Mode Scan VFO/MHz KEY VFO MHzInputs digit ‘0’ for frequency input, memory Push for 1 sec. to enter the set modeInputs digit ‘5’ for frequency input, memory Inputs digit ‘8’ for frequency input, memory@2STOP/PLAY ≈ ESIGNAL Squelch Indicators QBATTERY IndicatorWDUPLEX Indicators p Function displayYAFC Indicator p RANL/NB Indicator pgsTLOCK Indicator p USKIP Indicators pBattery INSTALLATION/CHARGING Battery installationRegular charging Battery chargingBattery caution Charging cautionCP-18A/E fuse replacement Rapid charging with the BC-156VFO mode Frequency and Channel SettingMode selection Memory mode/PreSet*/TV*/Weather† channelsOperating band selection 2425 Available frequency bandsTuning step selection Setting a tuning stepSetting a frequency Using the dialFrequency can be directly set via numeral keys Using the keypadEditting MHz to 1260.240 MHz Receive mode selection Lock functionBasic Operation Setting audio volumeWhen a signal is received ReceivingMonitor function Squelch level settingPush and hold SQL to monitor the operating frequency Attenuator function RF gainDuplex operation SettingRotate R-DIALto select Duplex AFC function NB/ANL functionBand scope Select the sweep steps, if desiredDial function assignment Single band operationMain band selection Band exchange Operating bands table for dualwatch operationSetting audio volume Squelch level setting Lower band’s squelch adjustmentGeneral description Memory channel contentsMemory Channels Memory channel programmingMemory bank setting Push MR S.MW for 1 sec. to set the channel into the bankMemory bank selection Rotate R-DIALto select the bank channelProgramming memory/bank name Rotate R-DIALto select the desired characterAvailable characters Selecting memory/bank name IndicationDication type from bank name or memory name Copying memory contents Push MR S.MW for 1 sec. to clear the contents Memory clearingErasing/transferring bank contents Full Scan p Scan OperationScan types FREQUENCY/MEMORY Skip Function pTo start the scan, release Mode Scan Select VFO mode with VFO MHzFull/band/programmed scan Scan edges programming Memory/bank/all bank scan Select memory mode with MR S.MWRelease Mode Scan to start the selected scan To stop the scan, push DualwatchRecalling the stored frequencies Auto-memory write scanDuring auto-memory write scanning Clearing the stored frequenciesSkip channel/frequency setting Scan resume condition Scan pause timerPush Dualwatch to exit set mode SETScan resume timer Priority watch types Priority WatchAbout priority beep function Priority watch operation Push Dualwatch to exit set mode and start the watchPush Dualwatch to cancel the watch Select the desired memory channel0Push Dualwatch to cancel the watch and scan VFO scan watch qSelect memory modeWhile scanning memory/bank channels Tone/DTCS squelch operation Comfortable ReceivingPush Dualwatch to stop the beeps and blinking man- ually Push 8 SET Tone squelch frequency/DTCS code settingAvailable Dtcs code list Available tone frequency listDtcs polarity setting Tone scan Push 4 T-SCANfor 1 sec. to start the tone scanExpanded set mode ON/OFF SET ModeGeneral Expanded set mode items Set mode itemsGeneral set mode items Beep output level Priority watchKey-touch beep Display backlightingANL function Power saveNoise blanker AF ﬁlterAM antenna selection No accessible key is available, exceptPower and Lock FM antenna selectionDial speed acceleration Auto power OFFDefault Monitor key actionScan stop beep Scan pause timerScan resume timer Turns the scan stop beep function on and OFFDuplex direction Scope audio outputOffset frequency Sets the audio output function while scope operationDtcs polarity Tone frequencyDtcs code Available subaudible tone frequenciesLCD contrast LCD contrast can be adjusted through 15 levelsMemory bank link Turns weather alert function on and OFFCI-V baud rate CI-V addressCI-V transceive Antenna selection RPush Dualwatch to exit set modeOther Functions Selecting antennaWeather channel selection Turn the weather alert function OFF in set modeWeather channel operation Weather alert functionData cloning Cloning using a personal computerReceiver shows following indications Auto power-off function Cloning errorIC recorder Playing back recorded contentRecording a received audio Playback speed setting Recording set mode Quality settingREC Automatic recordingErasing recorded audio Same time, but cannot erase each track independentlyPartial reset Command table Control CommandData format Control Command CI-V compatible transceiverS.A. channels Frequency TableTV channels Ccir channelsZealand China channelsNew ChannelsTaiwan channels Indonesian channelsItalian channels FOT channelsVHF marine channels Weather channelsunit MHzChannels Murs channels Other communications in the USAHF CB Citizens Band channels General aviation frequencies Wireless MicrophonesCable TV IRC Other communications- other countries LPD Low Power Device channels Unit MHzPMR446 channels unit MHz UHF C.R.S Citizen Radio Service channels Maintenance TroubleshootingSpecifications GeneralOptions OptionsDriver Installation For Microsoft Windows XPDriver Installation Windows starts installing the USB driver After the installation is completed, click Finish 0Repeat step e to y2After clicking Finish, the dialog appears as below For Microsoft WindowsFound 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 Pocket Guide IR20Release Mode Scan to start scan Declaration Conformity We Icom Inc. Japan#07 France Kamiminami, Hirano-ku, Osaka 547-0003, Japan