Furuno FM-4800, Operator'S Manual

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CONTROLS FM-4800 Operator’s Manual
8
2.2 Microphone
No. Description
1
[PTT] : Push-to-Talk Key
Press and hold the key in radio mode to enable the radio for voice
communication.
Note
When the PTT key on the microphone is pressed continuously, transmission
time is limited to five minutes. This limits unintentional transmissions due to a
stuck PTT key.
In addition, Power is automatically reduced to protect against overheating
due to continuous transmission.
2
[ ]: Cursor Key
Changes the channel up or down.
3
[HI/LO] : High / Low Power Switch
Press the switch to toggle between 25 W (High) and 1 W (Low)
4
[16/+] : 16/+ Key
Press the key to cancel all other modes and to tune into the priority channels
(CH16 and CH9). Press the key again to return to the previously selected
working channel.
Note
CH9 is used in some parts of the world as an alternative calling channel to
CH16.