User Manual

Axell Wireless Limited
Technical Literature
L.A. M.T.A. Remote Sites
Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 50 of 148
3.5.5.4. TETRA Power Amplifier 20W (12-016301)
This amplifier is a Class A 20W power amplifier from 380MHz to 470MHz 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.
It is housed is an aluminium case (Iridite NCP finish) with SMA connectors for the RF input/output and
a D-Type connector for the power supply and the Current Fault Alarm Function. Note the large
diameter DC power input pins (1 & 2) fitted to reduce volt-drop/arcing.
12-016301 Specification
PARAMETER SPECIFICATION
Frequency range 380-470MHz
Small signal gain 23dB
Gain flatness ±1.7dB
I/O Return loss >18dB
1dB compression point +43dBm
OIP3 +55dBm
Supply voltage 24V DC
Supply current 3.8Amps (Typical)
operational -10°C to +60°C Temperature
range
storage -20°C to +70°C
Weight <2kg (no heatsink)
7-Way Connector Pin-out details
Connector Pin Signal
A1 (large pin) +24V 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)