Listen Technologies LR-500, LR-400, LR-300 user manual Squelch Programming Instructions

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 58 for information on Listen SQ).

LR-400 Squelch