Making progress on my 20m SSB homebrew rig! Three working, tested bidirectional amplifiers (Hayward/Kopski) and the BFO from the BITX20 modified to 9MHz. Two amplifiers are 20dB and the other is 15dB gain. Also have a mixer (Ethernet transformer based) and a 3 pole band pass filter. More parts to come… #HamRadio #AmateurRadio
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
·
Feb 22, 2026
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