HYT TM-600 VHF Manual page 24

4. Repress the [UST] key to exit the UST mode, then LED resets to the original display
mode.
Public Address (PA)
The PA feature amplifies audio inputted from the microphone, and the audio can be heard
from the external speaker which is connected via 15PIN expansion port.
1. Press PA key (programmable) to activate the PA feature, then the LED displays "P".
Repress the PA key to disable the PA feature, then the radio returns to normal user
mode.
2. Once the PA feature is activated, the radio is unable to transmit and receive.
3. Speak into the microphone while holding down the [PTT], your voice can be heard
from the external speaker that is connected to the radio.
While in PA mode or the PA process initiates, the user can adjust volume via the
volume control knob.
4. Release the [PTT] to end PA process, then the radio returns to the PA mode.
Note:
In PA mode, adjust volume via the volume control knob.
While using the PA system, the optional PA accessories and external speaker
must be installed by your dealer.
Dual Home Channel
Upon press the Home Channel key (programmable), the radio will promptly go to the
programmed home channel.
When dual home channels are set, press the programmed Home Channel key to promptly
go to Home Channel 1, press again to promptly go to Home Channel 2, and press for the
third time to return to the original channel.
2-Tone Encode Select
1. Press the 2-Tone Encode Select key (programmable), local LED displays the preset
2-Tone encode sequence (0～9).
2. Press the ▲/ ▼ key to select 2-Tone encode (0～9).
3. Holding down the [PTT] to transmit the selected 2-Tone encode.
4. Upon release the [PTT], the signalling squelch is disabled and LED flashes orange.
5. If the Monitor key is pressed, or no signal is received within the preset time period, the
signalling squelch is enabled.
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