Aerial Facilities Limited New York Justice Centre Radio Repeater Equipment For GPD Telecom Inc. AFL Works Order: Q114828 AFL product part Nǀs.: 50-146501 (VHF Repeater) 50-146601 (UHF Repeater) 50-146701 (800MHz Repeater) Aerial Facilities Limited Technical Literature Handbook Number: 80-283501HBKM Bronx Justice Centre Radio Repeaters Issue No.
Table of Contents 1. INTRODUCTION ............................................................................................................5 Scope and Purpose of Document.................................................................................................... 5 Limitation of Liability Notice ............................................................................................................ 5 2. SAFETY CONSIDERATIONS .................................................................
4.1.11.2 4.1.11.3 4.1.11.4 4.1.12 Downlink I/P Splitter (50-146509)..................................................................................... 34 4.1.12.P 4.1.12.1 4.1.12.2 4.1.12.3 4.1.12.4 4.1.13 Downlink Input Splitter Photographs.......................................................................................34 Description ..............................................................................................................................35 Technical Specification .........
.2.14.3 4.2.14.4 4.3 4.3.1 4.3.2 4.3.3 4.3.4 4.4 4.4.P 4.4.1 4.4.2 4.4.3 4.4.4 4.4.5 4.5 4.5.P 4.5.1 4.5.2 4.5.3 4.5.4 4.5.5 4.6 4.6.P 4.6.1 4.6.2 4.6.3 4.6.4 5. 5.1 6. 6.1 5.2 5.3 5.4 5.5 5.6 5.7 5.8 5.9 5.10 5.11 5.12 5.13 Parts List .................................................................................................................................65 UHF Downlink Splitter Shelf System Diagram, Drg. # 50-146690..........................................
1. INTRODUCTION Scope and Purpose of Document This handbook is for use solely with the equipment identified by the AFL Part Number shown on the front cover. It is not to be used with any other equipment unless specifically authorised by Aerial Facilities Limited. This is a controlled release document and, as such, becomes a part of Aerial Facilities’ Total Quality Management System. Alterations and modification may therefore only be performed by Aerial Facilities Ltd.
2. SAFETY CONSIDERATIONS 2.1 Earthing of Equipment Cell Enhancers supplied from the mains must be connected to grounded outlets and earthed in conformity with appropriate local, national and international electricity supply and safety regulations. 2.2 Electric Shock Hazard Electrical shocks due to faulty mains driven power supplies.
2.4 Chemical Hazard Beryllium Oxide, also known as Beryllium Monoxide, or Thermalox™, is sometimes used in devices within equipment produced by Aerial Facilities Ltd. Beryllium oxide dust can be toxic if inhaled, leading to chronic respiratory problems. It is harmless if ingested or by contact. Products that contain beryllium are load terminations (dummy loads) and some power amplifier transistors. These products can be identified by a yellow and black “skull and crossbones” danger symbol (shown above).
3. EQUIPMENT OVERVIEW 3.1 System Description The New York Justice Centre needs three different frequency bands of radio coverage within its designated areas, each having specific channel allocations, some of which are simplex type, i.e. Tx & RX on a single frequency, and some duplex where the Tx & Rx are on two different frequencies so that both parties may transmit (or receive) simultaneously.
3.2 Whole System Diagram, Drg.
4. SYSTEM DETAILS 4.1 VHF Channel Selective Cell Enhancer Rack (50-146501) 4.1.1 VHF Cell Enhancer Rack Description The VHF cell enhancer, built into ten 19” wide shelves and housed in a 43U high equipment rack, is a mixture of simplex (Tx & Rx on one frequency) and duplex (Tx & Rx on two separate frequencies) systems, three simplex and two duplex. There are separate Rx and Tx antennæ for the VHF and UHF bands and a composite antenna for the 800MHz bi-directional system.
4.1.3 VHF Cell Enhancer Rack Mechanical Specification PARAMETER Height: Width: Depth: Height: Width: Rack Shelves Depth: Temperature range operational: storage: Weight: Relative humidity: RF Connectors: Environmental protection: Supply cable: Case: Heatsinks: Finish Handles: Fascia: SPECIFICATION 43U Standard Eldon Vented Rack 19" (482.6mm) 600mm See parts lists 19" (482.
4.1.5 VHF Downlink O/P Combiner Shelf (50-146502) 4.1.5.
4.1.5.1Description The five (downlink) channels are received from the output ports of the individual bi-directional amplifier shelves and coupled together through hybrids, except for channel 2 which, being a substantially higher frequency than the other four, has its own path through a dedicated bandpass filter at the output of which the other four combined frequencies and channel 2 meet. The single signal path is then passed through a divider to two equal level downlink output ports, VHF1 & VHF2.
4.1.5.4System Diagram, Drg.
4.1.6 VHF Uplink I/P Splitter Shelf (50-146503) 4.1.6.
4.1.6.1Description This shelf receives the single uplink RF from the antenna(s) and, similar to the downlink, one of the five channels is substantially different in frequency to the other four. This means that channel 1 is routed through a dedicated bandpass filter and the other four signals together also use a single filter.
4.1.6.4System Diagram, Drg.
4.1.7 VHF Duplex BDA Channel 1 Shelf (50-146504) 4.1.7.P VHF Duplex BDA Channel 1 Shelf Photographs As all the duplex shelves are hardware similar, only this pair of duplex shelf photographs are shown.
4.1.7.1Description The two duplex bi-directional amplifier shelves receive a downlink signal from the input antenna, amplify it to a level suitable for processing by a channel selective module and send the resultant 10W power signal to its designated antenna. The uplink path is very similar but in reverse with only a five Watt RF output power. Both paths feature a ferrite isolator on the output to prevent damage to the power amplifier should any reflected signals occur at their output antenna ports. 4.1.7.
4.1.7.3Parts List AFL Part # 08-930002 10-000701 10-000901 11-006002 12-002201 12-002220 12-002826 12-004902 12-005201 13-001803 13-001822 17-009725 17-010810 19-000922KL 20-001601 80-008902 80-063920 91-030002 91-500001 91-510003 91-600001 91-600007 91-600014 91-620001 91-700017 93-000034 96-110001 96-600002 96-600003 Part Description 2 PORT ISOLATOR 150-300MHz SMA 1/4W0-30dB SWITCHED ATTENUATOR SW. ATTENUATOR 0.
4.1.7.4System Diagram, Drg.
4.1.8 VHF Duplex BDA Channel 2 Shelf (50-146505) 4.1.8.P VHF Duplex BDA Channel 2 Shelf Photographs The duplex shelves are all hardware similar – so only the channel 1 shelf photographs are shown (see section 4.1.7.P) 4.1.8.1Description See section 4.1.7.1 4.1.8.2Technical Specification See section 4.1.7.2 4.1.8.
4.1.8.
4.1.9 VHF Simplex BDA Channel 3A Shelf (50-146506) 4.1.9.
4.1.9.1Description The simplex channel amplifier shelves (x3) receive their input signals from antennas and are processed as follows:The Simplex controller module (17-015301) monitors the receiver output for a signal change and activates the supply switching for either the uplink or down link path accordingly. In normal operation, the low level Rx path is activated and the associated Tx path is switched off.
4.1.9.3System Diagram, Drg.
4.1.9.
4.1.10 4.1.10.P VHF Simplex BDA Channel 3B Shelf (50-146507) VHF Simplex BDA Channel 3B Photographs See section 4.1.9.P 4.1.10.1 Description See section 4.1.9.1 4.1.10.2 Technical Specification See section 4.1.9.
4.1.10.3 System Diagram, Drg.
4.1.10.
4.1.11 4.1.11.P VHF Simplex BDA Channel 4 Shelf (50-146508) VHF Simplex BDA Channel 4 Shelf Photographs See section 4.1.9.P 4.1.11.1 Description See section 4.1.9.1 4.1.11.2 Technical Specification See section 4.1.9.
4.1.11.3 System Diagram, Drg.
4.1.11.4 Parts List AFL Part # 08-930002 10-000701 10-000723 10-000901 11-006002 12-002201 12-002220 12-002826 12-004902 12-005201 13-001803 13-001822 17-010810 17-015301 19-000922KL 20-001602 80-008902 80-063920 91-030002 91-500001 91-510003 91-600001 91-600014 91-620001 91-620005 91-700017 93-520015 93-540035 96-110001 96-600002 96-600003 96-700017 Part Description 2 PORT ISOLATOR 150-300MHz SMA 1/4W0-30dB SWITCHED ATTENUATOR 2xSWITCHED ATTENUATOR FIXING PLATE SW. ATTENUATOR 0.
4.1.12 Downlink I/P Splitter (50-146509) 4.1.12.
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.
4.1.12.4 System Diagram, Drg.
4.1.13 4.1.13.
4.1.13.1 Description The passive downlink output combiner shelf receives the five separate VHF cell enhancer output signals and couples them together through hybrid and bandpass filters into three identical paths. This shelf has no power source and no alarms. 4.1.13.
4.1.13.
4.1.14 4.1.14.
4.1.14.1 VHF/UHF PSU Shelf Description The power supply shelf consists of two, 400Watt 24V DC O.E.M modules which are commonly supplied from the mains but separately switched. The DC outputs are separately monitored and this data becomes half of the alarm data for the shelf (the two monitor loops are summed to form a single alarm relay contact pair).
4.1.14.
4.1.14.
