Icom IC-F21GM ‘ Setting squelch level, ‘ Auto scan function, ‘ Wide/Narrow selection

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OPERATION 5

Setting squelch level

The squelch circuit mutes the received audio signal depending on the signal strength. Scan proceeds in sequence from lower channel to higher channel numbers.

qWhile pushing [PTT] and [W/N], turn the transceiver’s power on

to enter the squelch adjustment mode.

wPush [MONI] to increase the squelch level (tight squelch) or [W/N] to decrease the squelch level (loose squelch).

Squelch level will be fixed after 1 sec.

Auto scan function

Auto scan function proceeds in sequence from lower channel to higher channel numbers. Scanning searches for signals automati- cally and makes it easier to locate new stations for contact or lis- tening purpose.

qTurn the CH select knob to CH 16. Scan starts automatically.

When receiving a signal, scan pauses until a signal disappears.

NOTE: You can perform the scan start/stop by optional HM-75A SPEAKER-MICROPHONE’ [Mic A] key.

Wide/Narrow selection

You can easily to toggle between wide FM mode and narrow FM mode by pushing [W/N] key.

Push [W/N]: Turns to wide FM mode.

Pushing and holding [W/N]: Turns to narrow FM mode.

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Contents IF21GM Safety Training Information Electromagnetic Interference/Compatibility General Mobile Radio Service Gmrs Page Foreword Table of Contents Speaker PTT Switch PTT Volume Control OFF/VOLAntenna Connector TX/RX Indicator LED p‘ LED indicator ‘ Accessory attachment AccessoriesSupplied accessories AntennaBattery Packs Battery Packs‘ Battery pack replacement Recycling information U.S.A. only ‘ Battery cautionsRapid charging with the BC-144+AD-99 ‘ Battery chargingSpacer combination Check orientation and the spacer com- bination as followsRegular charging with the BC-146 Rapid charging with the BC-121+AD-94 #11‘ Charging Note Battery pack life‘ Battery case Option ‘ Set mode SET ModeSetting the SIMPLEX/DUPLEX Operation Rx/Tx Freq Frequency channel listExample Freq Ctcss tone code listPush PTT Setting the Ctcss Tone FrequencyExample Ctcss Find ‘ Receiving and transmitting OperationPower Save Function TIME-OUT TimerMonitor Audible Function Audible condition‘ Wide/Narrow selection ‘ Setting squelch level‘ Auto scan function Charger Option‘ Options MB-74BELT Clip Other OptionsCount on us