Copyright © 2015 RCA Communications Systems
21
MR240
TM
VHF Marine Two-Way Radio Instruction Manual
VOLUME LOUD FUNCTION
The volume loud function temporarily
maximizes the volume level. It has no effect
when the volume level is 31.
1. Push [VOL/SQL] and [
▲
] to turn ON the
function.
2. Push [VOL/SQL] and [
▲
] to turn it OFF.
VOLUME MUTE FUNCTION
Volume Mute can be activated temporarily.
1. Push [VOL/SQL] and [
▲
] to activate.
- The audio is muted.
- The volume level indicator starts blinking.
2. Push [VOL/SQL] and [
▲
] to turn Volume
Mute off.
AUTOMATIC BACKLIGHT
This function is convenient for night time
operation. The automatic backlighting can be
activated in Set Mode.
- Push any key except for [PTT] to turn the
backlighting ON.
- Backlighting is automatically turned OFF after
5 seconds of inactivity.
LOCK FUNCTION
This function electronically locks all keys
(except for [PTT], [
▼
], [
▲
], [VOL/SQL], and
[
]) to prevent accidental changing of the
channel and function access.
- Push and hold [
] for 1 second to turn the
function ON and OFF.
