User's Manual

Receiver
The receiver provides either single receiver input or dual (HPD or TDMA) receiver inputs for dual diversity. The
receiver also provides enhanced diagnostic capabilities using an on board noise source generator. It includes a wide
tuning range (electronic varactor-tuned) preselector. The preselector is electronically tuned to the desired receive
frequency anywhere between 792–825 MHz, UHF R1 380–435 MHz, UHF R2 435–524 MHz, or VHF 136–174
MHz.
Transceiver External Interfaces
The transceiver external interfaces include seven external ports, a switch, and LEDs. If a transceiver option card is
part of the transceiver, there are four additional external ports. See Front Connections on page 111 for the port
connections. See LEDs on page 251 for information on the LEDs.
Transceiver Switch
The multifunction RESET switch on the front of the transceiver module is accessible through the drop-down door to
the left of the fans. The RESET switch has two functions:
Figure 7: Transceiver RESET Switch (viewable through the drop-down door)
Table 29: Transceiver Front RESET Switch Functions
User Action Result
Press switch for less than 1 second Service Mode (LED 3 lights amber)
Press switch for more than 3 seconds, then release Transceiver Control Module Reset
Transceiver Option Card Intercom Button
The intercom button on the front of the transceiver option card is accessible behind the fan module. Pressing the
intercom button toggles the intercom function between the ON and OFF states.
Figure 8: Transceiver Option Card Intercom Button (behind the fan module)
GTR 8000 Base Radio Theory of Operation | 65
6871024P71-A | November 2013 | Send Feedback
Applicant: Motorola Solutions
Equipment Type: ABZ89FC5810B / 109AB-5810B
Exhibit D (Permissive Change)