User's Manual

Bronx Justice Centre Radio Repeaters
Handbook Number: 80-283501HBKM Page: 67 of 86
4.3 800MHz Channel Selective Cell Enhancer Rack (50-146701)
4.3.1 Description
The 800MHz cell enhancer consists of four dedicated shelves and features two, separate, IF
channels tuned by independent channel selective modules (one 5.0MHz B/W, one 3.0MHz). The
power supply shelf provides all the DC needed by the whole 800MHz system, driven from the local
mains supplies. Alarms are provided from each active device and all are ‘looped’ to form a normally
closed fail-safe alarm (locally for each shelf and globally for the whole enhancer/rack). This loop
alarm is easily configured to join any other similarly wired system. Operators should be aware that the
8U BDA shelf and the 100W amplifier shelf are at the weight limit for a one-person lift. If in doubt do
not attempt to lift these shelves alone!
No battery backup is provided for this system, should the mains supply fail, the 800MHz system will
not function.
4.3.2 Technical Specification
PARAMETER SPECIFICATION
Height: 43U Standard Eldon Vented Rack
Width: 19" (482.6mm)
Rack
Depth: 600mm
Height: See parts lists
Width: 19" (482.6mm)
Shelves:
Depth:
<450mm (excluding heatsinks, connectors,
handles and feet)
operational: -20°C to +60°C Temperature
range:
storage: -40°C to +70°C
Weight: >100kg
Humidity: 5 – 95% non-condensing
RF Connectors: N type female
Environmental protection: IP44
Supply cable: All shelves supplied from dedicated PSU shelf
* Note: Individual shelf weights not specified.
4.3.3 Parts List
AFL Part Nǀ. Part Description Qty.
50-146702 800MHz CHN SELECT UL AND DL TRAY 1
50-146703 800MHz CHN SELECT POWER AMPLIFIER 1
50-146704 800MHz CHANNEL SELECTIVE PSU 1
80-054020 600mm DEEP SUPPORT BRACKET 8
80-063654 1U BLANKING PANEL (BS) RAL 7035 1
80-063655 2U BLANKING PANEL (BS) RAL 7035 3
90-100011 IEC MAINS LEAD '6 AMP' for USA 1
91-000002 N PLUG RG223:U 14
91-030002 N ADAPTOR PANEL FEMALE:FEMALE 7
97-500175 ELDON 43U 600 x 600 RACK (VENTED LID) 1
99-000082 PALLET 900 x 900 x 7ply FOR RACKS 1