Icom IC-M603 Instruction Manual page 50

8
SET MODE
D D Beep tone
You can select silent operation by turning beep tones OFF, or
you can have confirmation beeps sound at the push of a key
by turning beep tones ON.
D D Internal speaker
When an external speaker is connected and the transceiver's
internal speaker is not required, the speaker of the trans-
ceiver and the connected microphone can be deactivated.
D D LCD contrast
This item adjusts the contrast of the LCD in 8 steps.
44
D D Automatic foghorn frequency
The audio frequency of the automatic foghorn can be ad-
justed to suit your preference. While this item is selected,
pushing [PTT] outputs the foghorn— experiment with the fre-
quencies available until you find one you like.
• Available frequency range is 200 Hz to 850Hz in 50 Hz step.
(Default: ON)
D D Radio power
(Default: ON)
This item sets the Radio power function ON or OFF.
ON : The transceiver's power is controlled by the optional
OFF : The transceiver's power is not controlled by the optional
(Default: 5)
(Appears when a COMMANDMICIII™ is connected)
command microphone. When the command micro-
phone is turned OFF, the transceiver will also be turned
OFF automatically.
command microphone. Even if the command microphone
is turned OFF, the transceiver will continue to work.
(Default: 400)
(Default: ON)