001: 50MHz 2SC1946A*2 in parallel


The first 50MHzSSB transmitter I made was an output of 2W, and it was insufficient for F2 DX QSO that had been activated at that time. Then, I made the power amplifier with Mitsubishi transistors in parallel. The saturated output power was 40W, and 25W was obtained in linear region. Afterwards, I changed to the Toshiba 2SC2510 (single) that allows higher Vcc to improve the linearity.



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