Listen Technologies 863.050, User Manual

Page: 63 / 84

57
LR-400/500
Squelch
The purpose of squelch is to mute the audio output of your receiver when the signal from the
transmitter is turned off or is too weak to be received. Without squelch you would hear radio noise
in your earphone. The squelch on your receiver can be adjusted so that it will mute the audio on
different RF signal strengths. This is useful as follows:
LR-400/500 Operating Instructions
Set the squelch setting to the highest level
To ensure that users don’t hear transmissions from other
transmitters, set the squelch setting to the highest level that
doesn’t squelch the receiver.
If the receiver is close to the transmitter, set the squelch high
If the receiver is going to be close to the transmitter (i.e. in
a classroom), set the squelch setting high so that when the
transmitter is turned off it immediately squelches and ignores
transmitters in other rooms.
If in an area that has a lot of interference, set the squelch high
If you are in an area that has a lot of inference, you may want to
set the squelch setting to a high setting to ensure the
interference is not picked up by the receiver.
Squelch
Setting
Squelch
0
1
2
3
(default)
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
No Squelch
Loose Squelch
(Most Range)
Tight Squelch
(Least Range)
For maximum amount of range, set the squelch to a low level
If you need the maximum amount of range, you may want to
consider setting the squelch setting to a low level (0, 1 or 2).
NOTE: Default squelch setting is 3
CAUTION: When setting the squelch level low the reliability of squelch
function is compromised. This will cause radio noise to be heard in
the earphone and there is a possibility of hearing damage.