User's Manual
Bronx Justice Centre Radio Repeaters
Handbook Number: 80-283501HBKM Page: 76 of 86
4.6.1 Multiband Combiner Shelf Description
The multiband combiner performs the task of receiving all three frequency bands (VHF, UHF &
800MHz), passing them through a series of crossband couplers and a hybrid combiner to the two exit
ports, DAS1 & DAS2. This is an entirely passive unit using no active devices, no power supply and
therefore no alarm interface.
4.6.2 Multiband Combiner Shelf Technical Specification
PARAMETER SPECIFICATION
153.965MHz* (Ch 1)
154.755MHz
154.785MHz
154.980MHz
158.925MHz* (Ch 2)
VHF downlink
151.355MHz* (Ch 1)
154.6575MHz* (Ch 2)
154.755MHz
154.785MHz
VHF Frequencies:
154.980MHz
VHF uplink
453.7500MHz
465.0375 MHz
471.2625 MHz
479.8375 MHz
481.0375 MHz
485.6375 MHz
UHF downlink
458.7500 MHz
460.0375 MHz
470.7125 MHz
474.2625 MHz
476.8375 MHz
UHF Frequencies:
484.0375 MHz
UHF uplink
851-869 MHz (downlink)
800MHz tuned frequency ranges:
806-824 MHz (uplink)
VSWR: better than 1.5:1
Impedance: 50ȍ
RF Connectors: N type, female
Alarms Fitted: None
Environmental protection: IP44
Weight: <10kg
Height: 3U
Width: 19" (482.6mm)
Shelf:
Depth:
<450mm(excluding heatsinks, connectors,
handles and feet)
operational: -20°C to +60°C Temperature
range:
storage: -40°C to +70°C
* = Duplex channel
4.6.3 Multiband Combiner Shelf Parts List
AFL Part Nǀ. Part Description Qty.
05-003001 COUPLER 900MHz 4 PORT(THC-900) 1
07-004804 500/800MHz CROSS BAND COUPLER SMA 2
07-005705 CROSSBAND CPLR XC 250/380 SMA 2
09-002101 50W DUMMY LOAD DC-2.5GHz N FEMALE 1
19-000922K 3U CHASSIS KIT (450mm deep) 1
91-030002 N ADAPTOR PANEL FEMALE:FEMALE 7