Icom IC-M604 Instruction Manual page 50

8
SET MODE
D D Weather alert
A NOAA broadcast station transmits a weather alert tone be-
fore important weather information. When "
the previously selected (used) weather channel is checked
any time during standby or while scanning. When "
" is selected, the weather channels are checked in
sequence during standby or while scanning.
The " " indicator blinks until the transceiver is op-
erated after the transceiver detects the alert.
• " " appears instead of "
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.
44
" is selected,
" when the function is set ON.
(Default: OFF)
(Default: ON)
D D LCD contrast
This item adjusts the contrast of the LCD in 8 steps.
D D Attenuation level
This item sets the receive attenuation level for the Attenuator
function from 3 levels.
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)
(Default: 5)
(Default: Min)