Icom IC-F21GM Monitor Audible Function, TIME-OUT Timer, Audible condition, Inaudible condition

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5 OPERATION

DMONITOR AUDIBLE FUNCTION

The monitor function allows you to open the transceiver’s squelch manually to check whether a channel is busy or not. The trans- ceiver has 2 conditions for receive standby:

All signals are received

Only signals con- taining the proper tone are received

DTIME-OUT TIMER

Audible condition:

This condition mutes audio ONLY when no carrier is present. You can receive (or monitor) any signals on a channel.

Push and hold the [MONI], switch to se- lect the audible condition.

Any audio mute functions are cancelled while pushing the [MONI] switch.

Inaudible condition:

This condition mutes ALL signals except those directed to you. Therefore you should check a channel’s condition (busy or not) with the monitor function before transmitting.

Push the [MONI] switch momentarily to select the inaudible condition.

After continuous transmission for a pre-programmed period, the time-out timer is activated, causing the transceiver to stop transmit- ting and automatically selects receive.

The time-out timer function is automatically turned ON when 3 min. has passed.

DPOWER SAVE FUNCTION

The power save function reduces the current drain to conserve bat- tery power.

The power save function is automatically turned ON when no operation is performed or no signal is received for 5 sec.

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Contents IF21GM Safety Training Information Electromagnetic Interference/Compatibility General Mobile Radio Service Gmrs Page Foreword Table of Contents Speaker Volume Control OFF/VOL PTT Switch PTTAntenna Connector TX/RX Indicator LED p‘ LED indicator Accessories ‘ Accessory attachmentSupplied accessories Antenna‘ Battery pack replacement Battery PacksBattery Packs ‘ Battery cautions Recycling information U.S.A. only‘ Battery charging Rapid charging with the BC-144+AD-99Check orientation and the spacer com- bination as follows Spacer combinationRapid charging with the BC-121+AD-94 #11 Regular charging with the BC-146Battery pack life ‘ Charging Note‘ Battery case Option SET Mode ‘ Set modeSetting the SIMPLEX/DUPLEX Operation Frequency channel list Rx/Tx FreqExample Ctcss tone code list FreqSetting the Ctcss Tone Frequency Push PTTExample Ctcss Find Operation ‘ Receiving and transmittingTIME-OUT Timer Power Save FunctionMonitor Audible Function Audible condition‘ Auto scan function ‘ Setting squelch level‘ Wide/Narrow selection ‘ Options OptionCharger Other Options MB-74BELT ClipCount on us