DANIELS
ELECTRONICS LTD.
TM
4-8
IM10-VR3H040-AB VHF Enhanced Extra Wideband Receiver Instruction Manual
4.7.6
Squelch Window
•
Generally, the
squelch hysterisis
is set to a window of 6dB centered around the 12dB
SINAD sensitivity.
•
Set the RF Gen level to 3dB above the sensitivity. Turn pot R88 CW until the Rx’s
audio O/P turns off. Slowly turn R88 CCW until the signal just comes on and stays on.
•
Set the RF Gen level to 3dB below the sensitivity. Turn pot R115 CW while
occasionally pressing the squelch disable button on the front panel until the signal
remains on without having to press the button. Slowly turn R115 CCW until the signal
just turns off and remains off.
•
Check to ensure that the Rx opens and closes at the correct RF levels
±
1dB. If not,
repeat the previous two steps.