Uniden uh012sx Owner's Manual page 20

AUTOMATIC SQUELCH FEATURE
The UH047SX is equipped with an Automatic Squelch System which shuts off
weak transmissions and unwanted noise.
MONITOR
This feature enables users to listen for weak signals on the current channel
at the press of a button.
To use monitor:
mon 'RX'
1. Press button. The icon will flash.
2. Release within 1.5 seconds and the unit exits Monitor
mode.
mon
3. Press and hold button for 2 seconds for
continuous listening.
The receiver circuit will stay open, letting in both the noise & weak
'RX'
signals. The icon flashes in this status.
4. To return to normal Receive mode press
disappears or stops flashing in this status.
SCANNING
The scan function scans all channels which are stored in the SCAN CHANNEL
MEMORY and stops at an active channel. If a PRIORITY channel has been
selected then this channel will be monitored for activity every 3 seconds.
When the signal stops, the UH047SX waits 2 seconds (Reply Delay) before
scanning resumes.
To initiate scanning;
mem/SCN
1. Press key momentarily to begin scanning.
'SCAN'
The icon is displayed.
select/ mem/SCN
2. Press key or
mon 'RX'
button. The icon
key to cancel.
(7)