User's Manual

Bronx Justice Centre Radio Repeaters
Handbook Number: 80-283501HBKM Page: 35 of 86
4.1.12.1 Description
The input splitter shelf receives VHF signals from the off-air antenna and passes them through two
bandpass filters one of which is tuned to channel 2 and the other tuned to include channels 1, 3A, 3B
&4. The output of the filter tuned for channel 2 goes directly to the channel 2 cell enhancer input but
the other path is split by four crystal filters, the outputs of which go separately to the inputs of the
respective cell enhancer inputs. This is a passive shelf with no connection to any DC source and no
alarms.
4.1.12.2 Technical Specification
PARAMETER SPECIFICATION
Height: 3U
Width: 19" (482.6mm)
Shelf
dimensions:
Depth: <450mm (excluding connectors & handles)
operational: -20°C to +60°C Temperature
range:
storage: -40°C to +70°C
Weight: <10kg
Frequency ranges passed: 153.965 to 154.980 & 158.925MHz
Impedance: 50ȍ
Humidity: 5 – 95% non-condensing
RF Connectors: N type female
Environmental protection: IP44
Case: Iridite NCP coat
Heatsinks: None
Handles: Silver anodised aluminium alloy
Finish
Fascia Painted to RAL7035
4.1.12.3 Parts List
AFL Part # Part Description Qty.
01-003105 SD NOTCH FILT.N 6 SECT.VHF H/B SMA 2
19-000922K 3U CHASSIS KIT (450mm deep) 1
91-030002 N ADAPTOR PANEL FEMALE:FEMALE 6
91-130001 SMA ADAPT 'T' ALL FEMALE 3 GHz 4
93-980194 153.965MHz CRYSTAL FILT FAN4M52500 1
93-980195 154.755MHz CRYSTAL FILT FAN4M52500 1
93-980196 154.785MHz CRYSTAL FILT FAN4M52500 1
93-980197 154.980MHz CRYSTAL FILT FAN4M52500 1