144 Mhz LINEAR AMPLIFIER with GS-31B by SV8JE

original electronic design by YU1AW http://yu1aw.ba-karlsruhe.de
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Frond and top view

Frond view

the RF deck

Antenna variable capacitance

Plate variable capacitance

Input stage

Input stage (left) heater transformer and biasing (rigth)

Typical Operating Characteristics

Plate voltage : 3000v

Bias:28v

Idle current:50ma

Output power: 1 KW(50w input 0.7A plate current)