User's Manual

Weehawken Tunnel UHF Repeaters
User/Maintenance Handbook
Handbook N.-Weehawken_UHF Issue No:-A
Date:-05/08/05
Page:-
31 of 72
5. UHF PASSIVE SYSTEM COMPONENTS
5.1 UHF Triplexer (80-230701)
5.1.1 UHF Triplexer Description
The two triplexer shelves (80-230701 & 80-230702) are the interface between the UHF cell
enhancers and the tunnel leaky feeders. Two of these shelves exist, one uplink , one
downlink, both hardware identical but with the band selective filters in each being tuned for
uplink or downlink. Note that the semi-rigid cables which connect the three filters to the
output port is a critical length harness which must not be disturbed unless it is certain that
this component has failed. A replacement harness would necessitate the use of the test
equipment detailed in section 8.2 to ensure specification.
No alarms are fitted to passive shelves.
5.1.2 UHF Triplexer Technical Specification
PARAMETER SPECIFICATION
460.3-460.7MHz (80-230701/1)
471.5MHz (80-230701/1)
470.3125MHz (80-230701/1)
465.3-465.7MHz (80-230701/2)
471.5MHz ±300kHz (80-230701/2)
Frequency ranges:
473.3125MHz ±300kHz(80-230701/2)
VSWR: better than 1.5:1
RF Connectors: N type, female
operational:
-10°C to +55°C Temperature
range:
storage:
-40°C to +70°C
Case: Alocrom 1200
Heatsinks: Matt black
Handles: Silver anodised alloy
Finish:
Fascia Painted to RAL 7035
Alarms Fitted: None