Duplex Operation - Kenwood TH-78A Instruction Manual

2 With the Tuning control, set the "Hour" display to the time you want the transceiver to turn off.
3 Press the M key.
4 With the Tuning control, set the "Minute" display to the time you want the transceiver to turn off.
5 Press the F key.
Timer Start/Stop
If you press the F key, then press the 8 key, the switch-on timer starts or stops.
When the switch-on timer starts, the TIMER ON indicator lights on the LCD, and the transceiver is switched on at
the set time every day.
If you press the F key, then press the 9 key, the switch-on timer starts or stops.
When the switch-on timer starts, the TIMER OFF indicator lights on the LCD, and the transceiver is switched off at
the set time every day.
Alarm Function
If you press the M key twice in timer-start setting mode, the alarm function setting mode turns on. Select "A On"
using the tuning control.
The alarm stops when you press any front panel key.

DUPLEX OPERATION

Normally this transceiver operates in a simplex mode, i.e. no receive audio from the sub-receiver is fed to the speaker
during transmit on the main or active band.
If you prefer duplex operation, i.e. receive audio from the sub-band is fed to the speaker during transmit, you must
perform the following procedure.
Press the F key then press the DUAL key. The DUP indicator will appear on the display.
Duplex operation is now possible.
Occasionally the microphone might pick up receive audio, causing howling to occur. To prevent howling in the duplex
mode, use an earphone (see page 40) to listen to the receive audio, or perform the following operation.
Press and hole the F key for longer than one second, then press the DUAL key. The DUP indicator will flash.
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