User Manual

Table Of Contents
Mission Valley Radio Repeater Equipment + Upgrade
User/Maintenance Handbook
Handbook No. 50-078021HBKM Page 22 of 85
3.8 800MHz 8Ch. Channel Module Sub-Rack (50-078003)
3.8.P 800MHz Channel Module Sub-Rack Photographs
Photographs of this sub-rack are unavailable.
3.8.1 Description
The channel modules are built into a sub-rack which is the equivalent height of a 3U shelf. Each sub-
rack has eight channel selective modules (3 sub-racks=24 channels) and two channel control
modules that are DIP switch banks that configure the frequencies for the channel modules, see below
for channel module programming.
Each channel module has an alarm (alarm which is summed to form an overall alarm pair for the
whole sub-rack, that terminates at the rear-mounted 9-way alarm ‘D’ connector, pins 1 & 2.
3.8.2 Technical Specification
PARAMETER SPECIFICATION
855-869MHz (Downlink)
Frequency range:
810-824MHz (Uplink)
Height: 3U (equivalent)
Width: 19" (482.6mm)
Shelf
dimensions
Depth: <400mm (excluding connectors & handles)
operational: -20°C to +60°C Temperature
range
storage: -40°C to +70°C
Weight: <15kg
Channel module gain: 10dB
Channel module AGC level: -25dBm
Impedance: 50
DC power input: 12V @ 6.3A (fused)
Power consumption: <2.6Amps @ 12V DC
Humidity: 5 – 95% non-condensing
RF Connectors: N type female
Environmental protection: IP44
Case: Alocrom 1200/Iridite NCP coating
Heatsinks: None
Handles: None
Finish
Fascia: Painted to RAL7035