This is the second demonstration of the the 16 watt power amplifier I build to supplement my homebrew QRP rig. This is the full Tx amplifier chain for my transceiver which includes two 2N2219A stages followed by an IRF-510 driving the final amplifier - a push-pull RD16HHF1.
The final PA design is by Eamon Skelton from his RADCOM article and book "Building a Transceiver".
For more details on the build checkout my Amateur Radio Explorations blog...
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73,
Dean
KK4DAS
