User Manual
Table Of Contents
- 1. INTRODUCTION
- 1.1 Scope and Purpose of document
- 1.2 Limitation of Liability Notice
- 2. SAFETY CONSIDERATIONS
- 3. MASTER SITE RACKS (50-078001)
- 3.1 Master Site Description
- 3.P Master Site Rack Photos
- 3.2 Master Site Electrical Specification
- 3.3 Master Site Mechanical Specifications
- 3.4 Master Site Parts List (50-078001)
- 3.5 Channel Frequency Listing
- 3.6 Master Site Drawings
- 3.7 800MHz Air I/F + BSCE Uplink Shelf (50-078002)
- 3.8 800MHz 8Ch. Channel Module Sub-Rack (50-078003)
- 3.9 800MHz 40Watt Power Amplifier/Driver Shelf (50-078004)
- 3.10 VHF Simplex Shelf (50-078010/1)
- 3.11 VHF Simplex Shelf (50-078010/2)
- 3.12 VHF Duplex Shelves (50-078011/1-4)
- 3.13 VHF Air Interface Shelf (50-078012)
- 3.14 VHF Combiner Shelf (50-078013)
- 3.15 VHF PSU Shelf (50-078014)
- 3.16 VHF/800MHz Tx Multi-coupler (50-078015)
- 4. BAND SELECTIVE BI-DIRECTIONAL LINE AMPLIFIER
- 5. MASTER SITE UPGRADE
- 5.1 Master Site Upgrade Rack Assembly (50-078021)
- 5.1.1 Master Site Upgrade Rack Description
- 5.1.2 Master Site Upgrade Rack Electrical Specification
- 5.1.3 Master Site Upgrade Rack Mechanical Specification
- 5.1.6 Master Site Upgrade Rack Assembly (50-078021) Parts List
- 5.1.6a Upgrade Channel Module Shelf/Sub-Rack 50-078023 Parts List
- 5.1.7 Master Site Upgrade System Diagram, Drg. # 50-078081
- 5.2 Upgrade Channel Frequencies
- 5.3 Master Site HPA Interface Shelf (50-078005)
- 5.4 High Power Amplifier Shelf (50-146703)
- 5.1 Master Site Upgrade Rack Assembly (50-078021)
- 6. INSTALLATION
- 7. MAINTENANCE
- APPENDIX A
- APPENDIX B Initial Equipment Set-up Calculations
- APPENDIX C - BATTERY BACKUP
- C.1 GENERAL DESCRIPTION
- C.2. BATTERY BACKUP PHOTOGRAPHS
- C.3. SPECIFICATION
- C.4. GENERAL DRAWINGS
- C.5. BBU ALARMS & MONITORING SYSTEM
- C.6. INSTALLATION
- _
- C.7. MAINTENANCE
Mission Valley Radio Repeater Equipment + Upgrade
User/Maintenance Handbook
Handbook No. 50-078021HBKM Page 19 of 85
3.7.1 Description
This shelf is the interface between the system’s 800MHz bi-directional tunnel amplifiers and the off-air
antenna.
In the downlink direction, the incoming antenna RF is directed through a bandpass filter to a pair of
20dB gain low noise amplifiers that have a switchable 0-30dB attenuator between them. The resultant
single path is then divided several times and fed out of the shelf to the channel selective modules (x
24). When the outputs from the channel modules return, they are combined and exit to the two power
amplifier shelves that serve the East and West tunnel leaky feeders.
The uplink path originates from the tunnel antennas, and is band-selectively amplified and fed to a
pair of 10W power amplifiers. This final amplification stage in the uplink path has an automatic gain
control detector and attenuator to help negate the overloading effect of someone operating a mobile
close to the LCX tunnel antennas.
Note that this shelf has its own, dedicated mains driven, 12-15V DC PSU unit.
3.7.2 Technical Specification
PARAMETER SPECIFICATION
851-869MHz (Downlink)
Frequency range:
806-824MHz (Uplink)
Downlink output power: N/A
Uplink output power: 10Watts (x2)
AGC: Fitted in uplink path
AGC dynamic range: >35dB
Height: 8U
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: <15kg
Shelf gain: 60dB (typical)
Impedance: 50
Humidity: 5 – 95% non-condensing
RF Connectors: N type female
Environmental protection: IP44
Case: Alocrom 1200/Iridite NCP coating
Heatsinks: Black anodised aluminium
Handles: Silver anodised aluminium alloy
Finish
Fascia: Painted to RAL7035