Squelch Programming - Listen Technologies LR-300 User Manual

Squelch Programming Instructions

Squelch Programming

To enter Squelch programming mode
• Turn the unit off
• Press and hold the seek button; while still holding seek turn the ON/OFF dial to turn the unit on.
• Release the seek button when the Listen name disappears and a two digit display is seen.
To adjust the Squelch level
• Use the Channel UP and DOWN buttons to raise or lower the squelch sensitivity settings.
• Lower numbers mean that a less powerful and possibly noisy signal will be heard, but you can
have a longer range.
• Higher numbers mean that a more powerful signal with no noise will be heard, but you may
have a shorter range.
To save and exit the squelch programming mode press the seek button.
Squelch setting 00 is no squelch; this effectively disables Squelching capabilities of the receiver.
Squelch setting 20 is maximum squelch sensitivity; you must have a very strong and stable RF
signal for the unit to not engage the squelch feature.
Adjusting the squelch setting will keep your LR-400 receiver from picking up noise when the
transmitter is not sending audio, or when you lose the signal by being out of range or if
encountering interference.
Note: For squelch settings 1-3, the squelch function is slow which allows for maximum
transmission range. For squelch settings 4-20 the squelch function is fast to ensure
little radio noise is heard during the squelch function.
(The Listen SQ™ feature is not squelch, please refer to page 75 for information on Listen SQ™).
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