Icom IC-F521 Instruction Manual page 8

1
PANEL DESCRIPTION
[ T A ] TALK AROUND KEY
Turns the talk around function ON and OFF.
• The talk around function equalises the transmit
frequency to the receive frequency for mobile-
to-mobile communication.
[CALL] CALL KEYS
Transmit a 2-tone code.
• Call transmission is necessary before you call
another station depending on your signaling
system.
[EMER] EMERGENCY KEY
Push and hold the key to transmit an emergency call.
• If you want to cancel the emergency call, push
(or push and hold) the key again before trans-
mitting the call.
• The emergency call is transmitted one time only
or repeatedly until receiving a control code
depending on the pre-setting.
5
[CODE] TX CODE CHANNEL UP/DOWN KEY
Push to selects a TX code channel directory.
[DTMF] DTMF CHANNEL SELECT KEY
Push this key to select a DTMF channel.
• Push this key, then select the desired DTMF
channel using the [
Push the key to transmit the selected DTMF
code.
[TONE] C. TONE CHANNEL ENTER KEY
Push this key then input a continuous tone mem-
ory channel number using [
change the tone frequency.
]/[ ] keys.
]/[ ] keys to