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DCS Code Polarity Selection
Because DCS code is a 23-bits continuous string of logic 1 and 0, when
the DCS signal through the Tx or Rx path, the polarity of the DCS signal
changes probably on other transceivers. The polarity-inversed DCS
signal is just mapping to a specified DCS code as listed in the DCS code
table.
In the DCS encoding/decoding mode, in order to avoid the confusion of
signal polarity, the DCS encoding/decoding polarity could be changed.
1. Press the F key longer than 1 second when the transceiver in DCS
mode, then press the SHFT/REV key longer than 1 second within 10
seconds. The current DCS signal polarity will show on the display.
2. Rotate the tuning control or press the microphone UP/DN switches to
select the desired polarity.
3. Press any front panel key to return to the normal display.
5-8 CTCSS/DCS Feature Selection
When CTCSS/DCS function has been activated, the radio will not open
squelch until the proper tone is received.
Press the TONE/DUAL key and select the desired Tone mode. When
the T. indicator appears on the display, the transmitter will transmit the
desired tone. When the T.SQ indicator appears in the display the
transceiver will transmit the desired tone and operate in the Tone
Squelch mode, i,e. squelch will not open until the same tone is received
as a portion of the incoming signal. When no indicator is displayed on
the radio there will be no tone squelch control.
No indicator ➔ T. ➔ T.SQ ➔ DCS T. ➔ DCS T.SQ
CTCSS Tone/DCS Code Scan
When useing CTCSS/DCS encoding and decoding function, you can
have the transceiver scan through the tones or codes to determine
which one is present on a received signal.During CTCSS TONE/DCS
scan, the PAG/C.SQ feature is disabled.
1. Let the transceiver enter CTCSS/DCS encoding and decoding
mode.
2. Press F key longer than 1 second, then press TONE key longer then
1 second within 10 seconds. The CTCSS TONE/DCS CODE scan
starts and the SCAN indicator is illustrated on the display.
3. CTCSS TONE/DCS CODE scan can activate only when the carrier
exits in current channel, and stop when the scanned tone/code is
received.The scanned CTCSS TONE/DCS CODE will be illustrated
on the display.
4. Press any front panel key to return to the normal display, and the
transceiver exits the CTCSS TONE/DCS CODE scan mode.As
5-7-5/5-7-6 described, you could save the scanned CTCSS
TONE/DCS CODE in memory.
5-9 C.SQ(CODE Squelch System)
OPERATION[Requires optional DTS147]
Note
If you press the PTT key to transmit when the sub-audible signal
scanned, this scanned signal will be saved to memory
automatically.
This function allows squelch to be turned on in the receive mode on
reception of a three-digit code matching the C.SQ code selected in your
radio.
Once squelch is turn on by reception of a matching code, it operates
normally from then on. If no signal is received for longer than 3 seconds,
squelch is turned off until a matching code is again received.
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