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6. When the radio detects the correct tone or code, it will halt on that tone/code, and audio will be allowed to pass. Short
press the "Main" band
DIAL
to lock in that tone/code, then press the
[SET]
key to save the new setting and exit to nor-
mal operation.
Note:
If the Tone scan feature does not detect a tone or code, it will continue to scan. When this happens, it may be that
the other station is not sending any tone. Press the
[SCN]
key to halt the scan at any time.
User-defined CTCSS Tone / DCS Code Operation
The TH-7800 has the user-defined CTCSS Tone / DCS Code capability.
For CTCSS Tone:
1. Short press
[SET]
key to enter the Menu mode.
2. Rotate the "Main" band
DIAL
to select Menu # 30
(TONE F)
, short press the "Main" band DIAL knob to enter adjustment.
3. Input the Tone frequency by the microphone's key directly. The range is from 60.0 - 260.0 Hz.
4. Press the
[SET]
key to save the new setting and exit to normal operation.
For DCS Code:
1. Short press
[SET]
key to enter the Menu mode.
2. Rotate the "Main" band
DIAL
to select Menu # 7
(DCS.COD)
, short press the "Main" band
DIAL
knob to enter adjustm-
ent.
3. Input the DCS code number by the microphone s key directly. The range is from 000 - 777 Normal & Inverted, totally
1024 groups.
4. Press the
[SET]
key to save the new setting and exit to normal operation.
Various Scanning
The TH-7800 allows you to scan just the memory channels, the entire operating band, or a portion of that band. It will halt
on signals encountered, so you can talk to the station(s) on that frequency, if you like.
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DCS Code Inversion
If you find that the TH-7800 receiver squelch does not open when both you and the other station are using a common DCS
code, you can try the following:
1. Short press the
[SET]
key to enter the Menu mode.
2. Rotate the "Main" band
DIAL
to select Menu # 8
(DCS.N/R)
.
3. Short press the "Main" band
DIAL
knob, then rotate the "Main" band
DIAL
to select the following mode.
TRX N:
Both Encoder & Decoder DCS Normal
RX R:
Encoder DCS Normal; Decoder DCS Inverted
TX R:
Encoder DCS Inverted; Decoder DCS: Normal
TRX R:
Both Encoder & Decoder DCS Inverted
4. Short press the
[SET]
key to save the new setting and exit to normal operation.
Tone Search Scanning
In operating situation where you don't know the CTCSS or DCS tone being used by another station or stations, you can
command the radio to listen to the incoming signal and scan in search of the tone being used. It works either in the VFO
or Memory mode.
To scan for the tone in use:
1. Set the radio up for either CTCSS or DCS decoder operation. In the case of CTCSS, the "
ENC.DEC
" will appear on the
display; in the case of DCS, "
DCS
" will appear on the display.
2. Short press the
[SET]
key to enter the Menu mode.
3. Rotate the "Main" band
DIAL
to select Menu # 30
(TONE F)
when CTCSS is selected, or Menu # 7
(DCS.COD)
during
DCS operation.
4. Short press the "Main" band
Dial
knob to enter adjustment status.
5. Press the "Main" band [
SCN]
key to start scanning for the incoming CTCSS tone or DCS code.
Summary of Contents for TH-7800
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