Uniden VHF HH940 Operating Manual page 13

Press and hold
adjust the "squelch gate" so high that no
signals get through.
5. Press and hold
adjust the "squelch gate" so everything gets
through – noise, weak signals, and strong
signals.
6. To set the
"squelch gate" to the
desired level, press
on the chan
button until the gate
is all the way shut.
Press
noise. Then press
repeatedly until the noise just stops. Now
only strong signals get through.
Press the squelch button when finished.
on the chan button to
on the chan button to
repeatedly until you just hear
on the chan button
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