User's Manual

FCC ID: MI7-ECSHPA80TX
A3
1.3 Product Description
The ElectroCom HPA8 High Power Amplifier was designed specifically to operate with
the ElectroCom IP8B Base Station Data Transceiver. Basically, the unit amplifies the RF
output of the IP8B, providing up to 80 watts of RF power for the antenna system. The
HPA8 is intended for base station use only.
For enhanced reliability, the HPA8 incorporates a four power amplifier module design
which permits “graceful” degradation of output power under fault conditions. This
means the unit will continue to operate (albeit at gradually reduced power levels) despite
failures in up to three power amplifier modules.
The useful life of the HPA8 is extended by a 3-stage thermal “equilibration” scheme.
“Equilibration” refers to the act of equalizing the operating temperatures of the four
power amplifier modules. By doing so, and by keeping the temperature within
reasonable limits, heat stress on the modules is minimized. This results in longer
operating life for the modules, and increased overall reliability for the HPA8.
The HPA8 is equipped with over-temperature and over-voltage protection. To prevent
damage from excessive heat, or from a defective power supply, the cabinet temperature
and power supply voltage is monitored at all times.
1.4 Product Features
The HPA8 High Power Amplifier features:
•
80 watts RF output (typical).
•
Covers 851-866 MHz
•
Four power amplifier module design.
•
Graceful degradation of power under fault conditions.
•
3-stage thermal equilibration protection system.
•
Over-temperature protection.
•
Over-voltage protection.
•
13.8 VDC operation.
•
Compact size, rugged construction.