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CHAPTER 4
Setting the Gain for Radio Rebroadcast and PA
The radio rebroadcast feature allows incoming two-way radio messages to be amplified by the siren
amplifier/relay module and rebroadcast over the siren speakers of the PA300-CN system. The feature
overrides all sirens functions. Button 7 is programmed as the default control for radio rebroadcast. The gain
control for radio rebroadcast is a recessed potentiometer on the front of the siren amplifier (Figure 4.2 on
page 31). A secondary control for the radio rebroadcast gain is a recessed potentiometer on the back of the
control pad (Figure 4.3 on page 31).Wiring connections are described in "Connections for Radio Rebroadcast
(Cable Assembly P/N 1461907)" on page 22.
For public address, the PA300-CN system includes a microphone that connects to a serial port on the back
of the control pad. When the operator presses the microphone push-to-talk button and speaks into the
microphone, the operator's voice is amplified and broadcast over the siren speakers. The control for adjusting
the PA gain is a recessed potentiometer on the front of the siren amplifier/relay module (Figure 4.2). A
secondary control for the PA gain is a recessed potentiometer on the back of the control pad (Figure 4.3).
Setting the Gain for Radio Rebroadcast
To adjust the radio rebroadcast volume:
1.
Stand outside the vehicle in an inclosed area and turn on the two-way radio.
2.
Adjust the volume level of the radio to its normal operating volume.
3.
See Figure 4.1. Press Button 7 on the control pad to turn on radio rebroadcast,
30
Figure 4.1 Default control pad button for radio rebroadcast
7
PA300-CN Siren Amplifier
290A6844
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