User's Manual

Weehawken Tunnel UHF Repeaters
User/Maintenance Handbook
Handbook N.-Weehawken_UHF Issue No:-A
Date:-05/08/05
Page:-
18 of 72
4. UHF CELL ENHANCERS
4.1 Three Channel UHF Cell Enhancer 50-118101
4.1.1 Three Channel UHF Cell Enhancer Description
The UHF (400MHz band) cell enhancer employs three channel modules in each path for
three dedicated frequencies (NJ FD x2 & NJPD). The downlink output is realised using a
phased-parallel arrangement for the power amplifiers which effectively doubles their
20Watts output.
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.
4.1.2 Three Channel UHF Cell Enhancer Electrical Specifications
PARAMETER SPECIFICATION
460.3-460.7MHz (Downlink)
Frequency range:
465.3-465.7MHz (Uplink)
Bandwidth: 0.4MHz
Gain: >90dB
Gain Adjustment: 0 - 30dB (in 2dB steps)
Uplink Power: >10.0Watts
Downlink Power: >20.0Watts (x2)
Uplink +40dBm
IP3:
Downlink +54dBm
Downlink AGC gain: 10dB
Downlink AGC level: -22dBm
Uplink AGC gain: 14dB
Uplink AGC level: -8dBm
Noise Figure: <6dB (at maximum gain)
AGC: Fitted in channel modules
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
2 Uplink amplifiers
Alarms Fitted:
(volt-free contacts/TTL)
3 Each channel module