Icom IC-F121 [11/24] I receiving and transmitting

OPERATION

■ Receiving and transmitting

RECEIVING:

q Push [ ] to turn the power ON.

w Push []and []to select a channel.

e When receiving a call, adjust the audio output level to a

comfortable listening level.

TRANSMITTING:

r Take the microphone off hook.

• 2-tone, 5-tone mute may be released. (The ‘audible’ condition is

selected and “ ” appears.)

• A priority channel may be selected automatically.

t Wait for the channel to become clear.

• The channel is busy when “ ” appears.

y Push the [CALL] key when initiating a call from your side.

• Coded audio may be heard from the transceiver, then “ ”

appears.

• This operation may not be necessary depending on your signal-

ing system. Contact your dealer.

u While pushing and holding [PTT], speak into the micro-

phone at your normal voice level.

i Release [PTT] to receive.

IMPORTANT!: To maximize the readability of your signal;

➥ Pause brieﬂy after pushing [PTT].

➥ Hold the microphone 2 to 5 cm from your mouth, then

speak into the microphone at a normal voice level.

D Transmitting notes

• Transmit inhibit function

The transceiver has several inhibit functions which restrict

transmission under the following conditions:

- The channel is in mute condition (‘Inaudible’ condition; “ ” does

not appear).

- Channel is busy.

- A matched/un-matched CTCSS code is received.

- The selected channel is a ‘receive only’ channel.

• Time-out timer

After continuous transmission for a pre-programmed period,

the time-out timer is activated causing the transceiver to stop

transmitting and automatically select receive.

• Penalty timer

Once the time-out timer is activated, transmission is further

inhibited for a period determined by the penalty timer.

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