Another very good day working on my homebrew 20m SSB rig. I designed and built a simple BC549-based 46dB audio pre-amplifier to boost an electret mic. Here's me testing it out with a Motorola hand mic I chopped up for another project awhile ago and will now use for this radio. The output amplifier is the Soviet PNP transistor based one I designed and built awhile back. #HamRadio #AmateurRadio
https://youtu.be/LQBby_bXigE?si=gbO32mZ-ydn_3Dp3
Karl Matthias 🇺🇦
@relistan@mstdn.social
Infrastructure, architecture, #Golang, #Ruby, #ElixirLang. Co-author of "Docker: Up and Running" http://goo.gl/u3T6Lr from O’Reilly Media. American, naturalized Irish, Oregonian, cyclist, analog photographer, electronics hobbyist, and ham radio operator (EI9ITB / KB8SWH). Dublin, Ireland 🇮🇪
mstdn.social
Karl Matthias 🇺🇦
@relistan@mstdn.social
Infrastructure, architecture, #Golang, #Ruby, #ElixirLang. Co-author of "Docker: Up and Running" http://goo.gl/u3T6Lr from O’Reilly Media. American, naturalized Irish, Oregonian, cyclist, analog photographer, electronics hobbyist, and ham radio operator (EI9ITB / KB8SWH). Dublin, Ireland 🇮🇪
mstdn.social
@relistan@mstdn.social
·
Mar 01, 2026
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