Low power amplifiers and radiators
Photos of semi-finished RD16 amp. and mrf9180 amp.
Метка: hf
SDR box — finally it fits into the case
Preamp for mrfx1k80 — WSPR test
Temporary solution to drive big amp.
mrfx1k80 first run
First test run of the big amp.
Continue working on SDR Box
Some improvements.
Packages — fans arrived
48v fans for amplifier.
5w HF amplifier
It’s for using TRX-DUO as signal generator.
Received big radiator, but…
Something went wrong while transporting.
Test amplifier with mrf9120
Just received a few mrf9180 and one mrf9120, decided to finally test it with mrf9120.
MRF9180 amplifier — feeding transistor via balancing choke
Let’s try to add balancing choke to the schematics — feed sources from 4 turn choke for each transistor (8 turns summary) with power connected to the central point.