User's Manual

Weehawken Tunnel Remote Repeater
User/Maintenance Handbook
Handbook Nō.-Weehawken_River_P Issue No:-A
Date:-05/08/05
Page:-
13 of 36
3. MULTI-BAND SELECTIVE CELL ENHANCER (RIVER PORTAL)
3.3 Band Selective BDA (55-154901)
3.3.1 Band Selective BDA Description
The band selective BDA which covers the ‘River Portal’ site carries two downlink paths and
one uplink path, all with automatic gain control on the last amplification stage in each path.
Cross band couplers are fitted to the input and output to facilitate a low frequency bypass of
the 800MHz BDA allowing the lower frequency signals to pass unhindered.
All amplifiers have built-in alarms which are configured as a summary, volt-free relay
contact pair terminating at pins 1 & 2 on the ‘D’ type alarm connector.
3.3.2 Band Selective BDA Electrical Specification
PARAMETER SPECIFICATION
929-930MHz (Downlink)
854-869MHz (Downlink)
Frequency ranges:
806-824MHz (Uplink)
Gain: >35dB
Gain Adjustment: 0 - 30dB (in 2dB steps)
Uplink power: >1.0Watts (806-824MHz path)
Downlink power: >1.0Watts (929-930MHz path)
Downlink power: >20.0Watts (854-869MHz path)
Uplink +43dBm (806-824 & 929-930MHz paths)
IP3:
Downlink +56dBm (854-869MHz path)
Noise Figure: <6dB (at maximum gain)
AGC: Fitted to all paths
DC Power supply: 12V DC (externally supplied)
VSWR: better than 1.5:1
RF Connectors: N type, female
operational:
-10°C to +55°C
Temperature range:
storage:
-40°C to +70°C
1 Downlink amplifiers Alarms Fitted:
(volt-free contacts/TTL)
2 Uplink amplifiers