User's Manual

800MHz Tetra Repeater
User Handbook
Handbook Nō.-55-151501HBK Issue No:-A
Date:-22/04/2005
Page:-
20 of 31
4.4 20W Power Amplifier (12-018002)
4.4.1 Description
This amplifier is a Class A 20W power amplifier from 800-960MHz in a 1 stage balanced
configuration. It demonstrates a very high linearity and a very good input/output return
loss (RL). It has built in a Current Fault Alarm Function.
Its housing is an aluminium case (Alocrom 1200 finish) with SMA connectors for the RF
input/output and a D-Type connector for the power supply and the Current Fault Alarm
Function.
4.4.2 Technical Specification
PARAMETER SPECIFICATION
Frequency range: 800-960MHz
Small signal gain: 30dB
Gain flatness: ±1.2dB
I/O Return loss: >18dB
1dB compression point: 42.8dBm
OIP3: 56dBm
Supply voltage: 24V DC
Supply current: 5.0Amps (Typical)
operational: -10°C to +60°C Temperature
range
storage: -20°C to +70°C
Weight: <2kg (no heatsink)
4.4.3 PA 7-Way Connector Pin-outs
Connector Pin Signal
A1 (large pin) +12V DC
A2 (large pin) GND
1 Alarm relay common
2 TTL alarm/0V good
3 Alarm relay contact (bad)
4 Alarm relay contact (good)
5 O/C good/0V bad (TTL)