![background image](http://html.mh-extra.com/html/icom/ic-f521/ic-f521_instruction-manual_612626005.webp)
2
1
PANEL DESCRIPTION
t
DEALER-PROGRAMMABLE KEYS [P0] to [P4]
➥
Desired functions can be programmed independently by
your Dealer.
y
POWER SWITCH [POWER]
➥
Push and hold to turns the power ON and OFF.
• The following functions are available at power ON as options:
- Automatic scan start
- Password prompt
- Set mode
u
MICROPHONE CONNECTOR
➥
Connect the supplied microphone or optional DTMF micro-
phone for SmarTrunk II™ operation here.
NEVER
connect non-specified microphones. The pin
assignments may be different and the transceiver may be
damaged.
MICROPHONE
➥
The supplied microphone has a PTT switch and a hanger
hook.
• The following functions are available when the microphone is on
or off hook:
- Automatic scan start when hung on.
- Automatic priority channel selection when hung off.
- Sets to ‘Inaudible’ condition (mute condition) when hung on.
- Sets to ‘Audible’ condition (un-mute condition) when hung off.
■
Function display
q
TRANSMIT INDICATOR
➥
Appears while transmitting or sending a 2/5tone code.
w
BUSY INDICATOR
➥
Appears while the channel is in busy.
e
SIGNAL STRENGTH METER
➥
Indicates relative signal strength level.
r
LOW POWER INDICATOR
➥
Appears when low output power is selected.
t
AUDIBLE INDICATOR
➥
Appears when the channel is in the ‘Audible’ condition
(unmute condition).
y
COMPANDER INDICATOR
➥
Appears when compander function is activated.
q w e r t y u i
o
IC-F521_F621-2.qxd 05.12.2 10:15 AM Page e (1,1)