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You can also set a special search code up that will instantly decode the CTCSS or DCS code on a
received transmission. Channels programmed with the search code will receive all traffic on the
channel, and will instantly decode and display any CTCSS or DCS code that is found with the
transmission. You can then store the found code in the channel memory with one keystroke.
This section of the manual describes the process for configuring a memory channel for CTCSS or
DCS operation and manually programming a known code. For more information on using the
CTCSS and DCS feature while scanning, see "Using CTCSS and DCS".
To program channel memories for CTCSS or DCS operation, follow these steps:
1. First, enter a conventional frequency. See "Storing Known Frequencies into Channels".
2. Once you have entered the frequency, press MODE until the desired mode appears in the upper
left hand corner of the display. Use CT for CTCSS, and DC for DCS.
3. By default, the search code (indicated with Code Search in the bottom of the display) is
programmed. To program a specific code, press FUNC, MODE, and then use the arrow keys to scroll
to the desired CTCSS or DCS code. You can also use the keypad to enter the code manually. Note
that the scanner will automatically fill the code field as you enter the code.
4. Once the desired code is selected, press ENT to store the code in the channel memory.
5. It is possible to program memory channels for CTCSS or DCS operation at any time. Simply place
the scanner in program mode, navigate to the channel you wish to change, and follow the steps
above.
6. When stopped on an active conventional channel while scanning, you can press MODE to cycle
through the valid modes for that channel, including CTCSS and DCS. This will reset any stored CT
or DC code to the search code, allowing you to easily check for other CT or DC codes that may be
present on the frequency.
Note: CTCSS, DCS and digital voice all operate independently of each other. If a channel is
configured for CTCSS or DCS, it will not be able to decode digital transmissions. Use the FM mode
when mixed analog and digital voice reception is desired.
CTCSS Code Table:
67.0 Hz
94.8 Hz
69.3 Hz
97.4 Hz
71.9 Hz
100.0 Hz
74.4 Hz
103.5 Hz
131.8 Hz
171.3 Hz
136.5 Hz
173.8 Hz
141.3 Hz
177.3 Hz
146.2 Hz
179.9 Hz
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20-428 Owner's Manual
203.5 Hz
206.5 Hz
210.7 Hz
218.1 Hz
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