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Transmitter Operation
DCS Operation
Another form of tone access control is Digital Code Squelch, or DCS. It is a newer, more
advanced tone system that is less susceptible to false triggering than CTCSS. A DCS En-
coder/Decoder is built into your transceiver, and operation is very similar to that described
above for CTCSS.
1. Set the desired DCS code via Menu #23 (DCS CODE).
2. Press the key momentarily, then rotate the
knob, as needed, until Operating
Function Row 4 [RPT, REV, TON] appears on the display.
3. Press the
(TON) key three times to activate the DCS Encoder/Decoder (the “
”
icon will appear on the display). The receiver will remain muted until a matching DCS
code is received on an incoming signal.
4. Press the
(TON) key once to cancel DCS operation (the “
” icon will disap-
pear).
DSC Search Scanning
In operating situations where you don’t know the DCS code being used by anoth-
er station, you can command the radio to listen to the incoming signal and scan in
search of the code being used.
To scan for the DCS code in use:
1. Press the key momentarily, then rotate the
knob, as needed, until Operat-
ing Function Row 12 [TCH, DCH] appears on the display.
2. Press the
(DCH) key to activate DCS Encoder/Decoder; (the “
” icon will
appear on the display) and start scanning for the incoming DCS code.
3. When the radio detects the correct code, it will halt on that code, and audio will be
allowed to pass.
4. Press and hold in the
(DCH) key for one second; the DCS code detected will
be stored as the “current” code, so it may be used for memory storage purposes,
and you may now exit to normal operation.
