User Manual

P B L Tunnels Loc 2 Units 1 & 2 + 800MHz BDA
Maintenance Handbook
H/book Number:-60-056100HBKM
Issue No:-1
Date:-13/02/2003
Page:-48 of 48
5.1.5 10 Watt Power Amplifier (12-004205)
5.1.5.1 Description
The power amplifier fitted in this unit 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.
5.1.5.2 Technical Specification
Frequency range: 350 – 550MHz (tuned to spec.)
Bandwidth: 20MHz (tuned to spec.)
Maximum output power: >10W
Gain: 30dB
1dB compression point: <+43dBm
3rd Order intercept point: <+54dBm
VSWR: better than 1.45:1
Connectors: SMA female
Supply: 2.5A @ 24V DC
operational: -10°C to +55°C Temperature
range:
storage: -40°C to +70°C
Size:
276 x 78 x 40mm (ex. connectors &
heatsink)
Weight:
1.5 kg(approximately, excluding
heatsink)