TR850 Service Manual
2.2. LED Indicator
LED Description
TX-A Indicates slot 1 is transmitting.
RX-A Indicates slot 1 is receiving.
TX-B Indicates slot 2 is transmitting.
RX-B Indicates slot 2 is receiving.
Repeater mode. When illuminated, the repeater is active. When the
repeater is inactive, the LED is off.
Analog mode. For analog or mixed signals the LED flashes when active.
The LED is off when inactive.
Digital mode. For digital or mixed signals the LED flashes when active. The
LED is off when inactive.
Alarm mode. Illuminates when there is a problem with the repeater.
Illuminates when the repeater is switched on.
3. Circuit Description
3.1. RF Circuit
The RF part is composed of transmitter module, power amplifier module and receiver module.
3
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