VHF POWER AMPLIFIER
This unique RF power amplifier is designed to be connected between the output of a typical 5W transceiver and the antenna. It has been designed to produce a flat power gain across the entire aeronautical band, with extremely low distortion, spurious emissions and adjacent channel interference.
Transmit/receive switching is automatic, meaning that a single antenna may be used.
With power supply failure, or any internal or antenna fault, the amplifier is bypassed and the transceiver is connected directly to the antenna with very little power loss.
A DB15 connector provides outputs to drive external LED status indication.
|PA 25 LINEAR AMPLIFIER SPECIFICATIONS|
|Frequency Band||118 to 137 MHz.|
|Input RF power required||5 Watts|
|Output RF Power||25 Watts +/- 2dB (Carrier)|
|Voice Modulation||AM (A3E)|
|RF Input and Output Impedance||50 Ohms|
|Connector Input||SMA or SMB (On Printed Circuit Board)|
|Connector Output||SMA or SMB (On Printed Circuit Board)|
|AM Modulation Depth||Up to 90%|
|Protection||Open Circuit, Short Circuit, High VSWR, Continuous Transmit|
|Fault & status indication||Multi-pin connector provided for remote LED status indication|
|Spurious Emissions||<-60 dBC|
|Adjacent Channel Power||<-60 dBC|
|Keying Delay||20 mSec or less|
|Bypass operation||Automatic bypass when no input power or fault|
|Duty Cycle||30% TX:RX|
|DC Supply||24 to 30VDC|
|Cooling||Large finned heatsink requires forced ventilation.|