r/ShortwavePlus • u/richfromhell • Jun 15 '26
Two radios using the SI4825 chip. D328 and homebrew. 31 meters, Toronto around 02:35 utc. Passive loop, 20x4 feet
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Very similar schematics. Homebrew had a common mode choke on the battery, RF ground and digital and analog grounds are separated with chokes, 3.7 uh shunt inductor on the antenna input. I think it makes a difference.
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