Squelch Information - Listen Technologies LR-300 User Manual

LR-400 Squelch
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:
· To ensure that users don't hear transmissions from other transmitters, set the squelch set-
ting to the highest level that doesn't squelch the receiver.
· If the receiver is going to be close to the transmitter (i.e. in a classroom), setting the
squelch setting high so that when the transmitter is turned off it immediately squelches and
ignores transmitters in other rooms.
· 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 by the receiver.
· 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). CAUTION: when setting the squelch level low the relia-
bility of squelch function is comprised. This will cause radio noise to be heard in the ear-
phone and there is a possibility of hearing damage.
36