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ADVANCED FEATURES
VOX
MBuilt-in Voice Activated Circuit (VOX) feature enables the user to
transmit automatically by speaking on the microphone of the VOX headset
(not supplied) without pressing the PTT switch.
CTCSS (Continuous Tone Coded Squelch System)
CTCSS is a feature that allows a group to talk to each other without hearing
other users on the same channel.
Programming CTCSS Code
1. Select a desired channel to be used with CTCSS.
2. Press and hold for 1.5 secs. CTCSS icon blinks.
3. Press or to select the desired CTCSS code.
4. Press to save the selected code. CTCSS icon stops blinking.
The uh073sx will return to standby mode after 10 secs. of no
activity. CTCSS code can be programmed on every channel. There
are 38 available CTCSS tone per channel.
CTCSS Scan Operation
1. Press to start scanning (GS or OS) mode.
2. Press and hold to change to CTCSS scan mode.
3. When a signal is sensed on a CTCSS CH, the uh073sx stops for about 400
msecs (decode time) to decode the CTCSS code. If there is no code or the
receive code does not match the one programmed on the unit, the unit
resumes scanning.
Channels 5 and 35 are used for emergency channels. CTCSS will
not operate on these channels.
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