Listen LR-600, User Manual

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Squelch Adjustment
11
LR-600 Squelch Adjustment
When the transmitter is not turned on, the squelch function mutes the audio so that random noise is
not heard through the speaker.
The squelch function can be programmed for more or less sensitivity. When the squelch function is
programmed for more sensitivity, you sacrifice transmission range in exchange for more reliability of
the squelch function. When the squelch function is programmed for less sensitivity, you achieve
greater transmission range in exchange for less reliability of the squelch function. This means that
even if the transmitter is off, you may hear noise in the speaker. You can try different squelch settings
for your application.
Examples for setting the squelch sensitivity high
· You absolutely don’t want the unit to have noise when the transmitter is off.
· The transmitter is close to the LR-600.
Examples for setting the squelch sensitivity low
· It doesn’t matter if the user hears the noise if the transmitter is turned off.
· The transmitter is located a long distance from the LR-600.
The adjustable squelch can be programmed from 0 (no squelch) to a maximum of 20 (highest
sensitivity). The default setting is 3.
To program the squelch setting, do the following
· Turn the unit off.
· Press and hold the SEEK button.
· Turn the unit on.
· Release the SEEK button.
· The squelch setting is shown on the display. Default is 3.
· Use the UP and DOWN buttons on the rear panel to select the setting you want. Note the RF
meter still operates, giving you relative RF power from the transmitter.
· When you are done, press SEEK to store the new squelch setting.
Use Seek to enter Squelch
programming mode and to save
settings (see instructions above).
While in Squelch programming
mode, channel UP / DOWN
buttons are used to change
squelch sensitivity. 03 is the
factory default.