REXON PA-80V User manual

User manual
VHF band linear amplifier
Model PA-80V

PRODUCT BRIEF
PA-80V is linear amplifier designed for VHF band applications.
It is primarily intended to enhance the range of hand-held transceivers by boosting transmitter power
and increasing receiver gain if required.
In the world of radio, equipment reliability is paramount and PA-80V addresses this need in following
ways:
- Supervising microprocessor recognizes the situation when amplifier can't deliver expected RF
power and immediately switches to bypass mode, connecting transceiver directly to antenna. The
situation of „transmitting” through „burned” amplifier does not happen.
- The problem of defective or improperly tuned antenna is detected and signaled. Amplifier stays
in bypass mode to protect itself.
- Excessive input power, caused by transceiver malfunction or misapplication causes alarm and
transition to bypass mode.
- The DC power supply voltage outside acceptable range causes alarm and amplifier returns o
bypass mode.
- Excessive temperature of the amplifier causes alarm and return to bypass mode
All alarm indicators (LEDs) are red. Anything red is lit – there is a problem. This scheme relieves user
from paying too much attention to the signaling.
PA-80V features – Multipath Automatic Level Control( ALC ) provides reliable output power control
and amplifier damage protection .Receiver Low Noise Amplifier ( LNA ) is provided to minimize
noise figure degradation cause by transceiver-to-amplifier cable loss. Band-pass filter to prevent
blocking by out of band signals included .

FRONT PANEL DESCRIPTION