This PA has been designed by Sergey EX8MLE and uses three Mitsubishi RD100HHF1 FETs.
Please contact Sergey EX8MLE if you would like to buy an assembled PA or a PCB.
Sergey has also made a video of his latest PA.
Parameters
Frequency Range – 70-72 MHz
Input/Output impedance – 50 Ω
Vdd = 15,6 V
Idq = 1,00 A per transistor
Pin = 5 W single tone
Pout = 300 Watt CW
Id = 33 A
Gps = 17,8 dB
nD = 58%
Class – AB
Circuit diagram
Low pass filter
Combiner/splitter
Temperatures
PCB with components
Combiner/splitter with low pass filter
