User's Manual

Weehawken Tunnel UHF Repeaters
User/Maintenance Handbook
Handbook N.-Weehawken_UHF Issue No:-A
Date:-05/08/05
Page:-
52 of 72
7.9 1Watt Low Power Amplifier (11-007901)
7.9.1 Description
This amplifier is dedicated to be a 1.0 W driver from 380 MHz to 470 MHz. It is a 2 stage
amplifier where each stage is in balanced configuration. It demonstrates very high linearity and
good input/output VSWR. There is a Current Fault Alarm Function, which indicates failure of
each one of the RF transistors by various alarm output options. The amplifier is housed in an
aluminium case (Alocrom 1200 finish) with SMA connectors for the RF input/output and a
9way D-type connector for DC and alarm outputs.
7.9.2 Technical Specifications
PARAMETER SPECIFICATION
Frequency range: 380-470MHz
Small signal gain: 37.5dB
Gain flatness: ±0.5dB
Gain vs. temperature: 1.5dB
operational:
-10°C to +60°C
Temperature range:
storage:
-20°C to +70°C
Input/output return loss: 18dB
Maximum output power: 30.4dBm (@ 1dB comp. point)
OIP3: 43dBm
Supply voltage: 10-15V DC
Current consumption: 780mA (typical)
Noise Figure: <1.75dB