Johnson Transmitter audio #shorts #hamradio #vintage #diy #shortwave #repair #retro #prepping #old

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More installations and testing of the audio inverter board. This module replaces the old interstage transformers. It will install into Johnsons, Heathkits and others. Sound is crystal clear. Easy to install, cheap to maintain. If your interested in one for your vintage transmitter. Contact me: d-labelectronics or