User's Manual
Bronx Justice Centre Radio Repeaters
Handbook Number: 80-283501HBKM Page: 47 of 86
4.2.5.1Description
The UHF downlink combiner shelf receives signals from the outputs of the six BDA shelves and
combines them using a series of bandpass, notch filters and hybrid couplers. The two UHF outputs
then directly drive the leaky feeder antennas. This is a passive only shelf and has no need of a power
source or alarms.
4.2.5.2Technical Specification
PARAMETER SPECIFICATION
DC power consumption: None
Chassis height: 4U
IP protection: IP44
Relative humidity range: 5-95%
Impedance: 50ȍ
Alarms: None
operation: -10C to +60C
Temperature Range:
storage: -30C to +70C
Case: Alocrom 1200/Iridite NCP
Heatsinks: None
Fascia: Painted to RAL7035
Finish:
Handles: Silver anodise
4.2.5.3Parts List
AFL Part Nǀ. Part Description Qty.
02-007309 SDF C/L5P VAR.BW TOP SMA 50mm POST 3
02-013401 6P CL FLTR(0.5 min BW) LARGE SMA ASSY 2
02-020001 UHF 2 LN NOTCH FILTER SMA 3
05-000101 TRANSMITTER HYBD COUPL.4 PORT 1
05-000104 TRANS.HYBRD.COUPL.3 PORT 50W INT.L 1
19-001022K 4U CHASSIS KIT (450mm deep) 1
91-030002 N ADAPTOR PANEL FEMALE:FEMALE 9
91-130001 SMA ADAPT 'T' ALL FEMALE 3 GHz 5