Codan Radio Communications AMP-3-150 User Manual

Page of 12
VHF 30W Power Amplifi er Instruction Manual
IM71-AMP3150-30
1
GENERAL 
INFORMATION
INTRODUCTION
The MT-2/MT-3/MT-4 repeater system is a 
VHF/UHF radio system which is characterized 
by high performance and reliability under the 
most severe environmental conditions. The total 
system is designed to provide dependable, low 
maintenance performance, even in the most 
diffi cult circumstances.
The MT-2/MT-3/MT-4 series of modules are 
packaged in the compact Eurostandard 
(5”h x 2.8”w x 7.5”d) housing, and are robustly 
designed for urban, remote or transportable 
applications. Voltage stress testing is done 
over the range of +10 to +17 Volts DC which is 
followed by 24 hours of continuous operation at 
maximum rated power output.  
When the VT-2/VT-4 transmitter is used as an 
exciter for the VHF AMP-3 power amplifi er (PA) 
module, it will provide an adjustable 10 to 30 
Watts RF output over the 136 to 174 MHz VHF 
Frequency range. When the VT-3 transmitter 
is used as an exciter the RF output is only 
adjustable from 20 to 30 Watts.
The VHF AMP-3 family contains two models 
(AMP-3/140 and AMP-3/160) covering two 
frequency bands 136 - 150 MHz and 150 - 174 
MHz, respectively.  The VHF AMP-3 power 
amplifi er (PA) mates with either the MT-2 VHF 
transmitter exciter module, the VT-3/1xx-Sx 
transmitter exciter module or the VT-4x1xx-x0 
transmitter exciter module.