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 35 of 148
A1 A2
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3.4.5.6. TETRA Power Amplifier 5W (12-021601)
Power amplifier 12-021601 is a multi-stage, solid state power amplifier. Class A circuitry is employed
throughout the device to ensure excellent linearity over a wide dynamic frequency range. All the semi-
conductor devices are very conservatively rated to ensure low device junction temperatures and a
long, trouble free working lifetime.
The power amplifier should require no maintenance over its operating life. Under no circumstances
should the cover be removed or the side adjustments disturbed unless it is certain that the amplifier
has failed; since it is critically aligned during manufacture and any re-alignment will require extensive
test equipment.
The unit housing 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.
12-021601 Specification
PARAMETER SPECIFICATION
Frequency range: 380-470MHz (as required)
Bandwidth: 10-40MHz (typical, tuned to spec.)
Maximum RF output: >5Watts
Gain: >30dB
1dB compression point: +37.5dBm
3
rd
order intercept point: +50dBm
VSWR: better than 1.5:1
Connectors: SMA female
Supply: 1.9Amps @ 12V DC
Weight: 1kg (excluding heatsink)
operational:
-10qC to +60qC
Temperature
range:
storage:
-20qC to +70qC
7-Way Connector Pin-out details
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)
7-Way Pin-Out Graphical Representation