GTX 327 MAINTENANCE MANUAL
Page 1-7
190-00187-05
Rev. B
1.6.5
Diplexer Coax Cable
The GTX 327 Receiver and Transmitter are connected to a common BNC connector at the rear of the unit
through subminiature coax cables and RF connectors.
Cable length and placement of this cable is critical to proper operation.
The cable assy is used as a diplexer,
allowing both the transmitter and receiver to use the same BNC antenna connector. The transmitter and receiver
operate 60 MHz apart (TX at 1090 MHz and RCV at 1030 MHz). At 1090 MHz the coax cable going to the
receiver appears as an open circuit while at 1030 MHz, the coax cable going to the transmitter appears as an open
circuit.
The routing of the coax cables inside the unit is critical as well.
Note how the cables are routed before removing. Make sure the cables are replaced in the same location as
originally installed.
1.6.6
Flexible Circuit Cables
The major subassemblies are interconnected by means of ZIF (Zero Insertion Force) flexible circuit cables and
one ribbon cable. These cables are readily available for replacement in case of damage.
The document reference is online, please check the correspondence between the online documentation and the printed version.
