Tone Operation - Kenwood TH-78A Instruction Manual

6 Tone Operation

Some repeaters require a control signal to activate
them. Several different methods are currently in
use.
In the United States, sub-audible tones are
sometimes used. This transceiver will generate sub-
audible frequencies.
In Europe and the United Kingdom, a 1750 Hz tone
is used in transmitting. Simply press and hold the
TONE key to transmit the access code. You need
not press the PTT switch. A 1750 Hz tone encoder
is included with models delivered to Europe and the
United Kingdom.
Selecting Tone Frequencies
If the optional CTCSS unit (TSU-7) is not installed,
you cannot change the tone frequency.
Press the F key for longer than one second, then
press the TONE key. The current tone frequency
will appear on the display.
2 Rotate the tuning control to select the desired tone
frequency(Hz)
3 Press any key or simply wait 10 seconds for the
transceiver to resume the previous mode.
Tone Function Operating
Press the TONE key. A " T " indicator appears on
the display, and the transmitter sends the desired
tone when you press the PTT switch.
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