User's Manual

Weehawken Tunnel VHF Repeater System
User/Maintenance Handbook
Handbook N.-Weehawken_VHF Issue No:-A Date:-05/08/05
Page:-
41 of 75
5.4 VHF Uplink Combiner (80-231101)
5.4.1 VHF Uplink Combiner Description
This shelf is the interface between the uplink VHF cell enhancers and the Tx antenna output
port. The outputs of all the cell enhancers are first combined by combinations of two-to- one
hybrid combiners which feed a triplexer filter array, which in turn, couple these three signals
to the Tx antenna output port.
This being a passive shelf, no alarms are present.
5.4.2 VHF Uplink Combiner Technical Specification
PARAMETER SPECIFICATION
153.75-155.30MHz (D/L)
Frequency ranges:
159.0-161.0MHz (D/L)
VSWR: better than 1.5:1
Insertion loss: <1.5dB
Rejection: >30dB
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