Battery Saver; Voice Scrambler (Option) - Furuno FM-4721 Operator's Manual

2. OPERATION
2.14.4

Battery saver

Enable/Disable the battery saver of the optional BH-2A Bluetooth Headset.
1. Press and hold down the CALL/MENU key until the [Setup Menu] appears.
2. Rotate the CH knob to select [General Setup] then press the [SELECT] soft key.
3. Rotate the CH knob to select [Bluetooth] then press
the [SELECT] soft key.
4. Rotate the CH knob to select [Save Function] then
press the [SELECT] soft key.
5. Select [On] or [Off] then press the [ENT] soft key.
Press the [QUIT] soft key several times to exit this menu and return to radio oper-
ation.
[On]: Activates the Battery Saver in the BH-2A. If there is no signal or key activity
for 20 seconds, the Battery Saver automatically puts the BH-2A to sleep, to con-
serve battery life. When a signal is received or the PTT switch is pressed, the BH-
2A becomes active. Furthermore, if there is no signal or key activity for 10 min-
utes, the BH-2A turns off automatically.
[Off]: Disables the Battery Saver in the BH-2A.
2.15

Voice Scrambler (option)

The optional Voice Scrambler FVP-42 is a 32-code voice scrambler (VS) that installs
in the transceiver, and provides private communications with other FM-4721 equipped
with the FVP-42. Contact your dealer to have a FVP-42 installed.
1. Rotate the CH knob to select the channel to scramble.
Note: CH16 and 70 can not operate the voice scram-
bler.
2. Press the FUNC key then press and hold down the 7/
SQRM key until the [Scrambler] menu appears.
3. Rotate the CH knob to set the desired scrambler code.
The scrambler code can be set from 0 to 31.
4. Press the [ENT] soft key to save the scrambler code
and return to the radio mode. "VS" and scrambler
number (0 - 31) appear on the display.
5. Press the FUNC key followed by the 7/SQRM key to
activate the voice scrambler.
6. Monitor the channel before transmitting.
7. To disable the voice scrambler, press the FUNC key
followed by the 7/SQRM key again. VS and scrambler
number disappear from the display.
2-16
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