Replies

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  penguin42penguin42@mastodon.org.uk

  Jun 29, 2026, 9:58 PM

  @cnlohr @qwazix Using one of the stm32f4 (?) ?

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  Graham Sutherland / Polynomialgsuberland@chaos.social

  Jun 29, 2026, 10:05 PM

  @cnlohr @qwazix incredible idea.

  a similar idea I had a while back was to do something like this but with multiple traces, so each key position has a guaranteed different impact on S-parameters due to phase cancellation and stub lengths - essentially a switchable distributed element filter.

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  cnlohrcnlohr@chaos.social

  Jun 29, 2026, 10:06 PM

  @gsuberland @qwazix Well, this is what I have, so I guess I'll see what I see.

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  Graham Sutherland / Polynomialgsuberland@chaos.social

  Jun 29, 2026, 10:07 PM

  @cnlohr @qwazix it looks frickin awesome. are you using a separate T&M TDR for the measurement, or building a pulse generator?

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  ChuckChuckMcManis@chaos.social

  Jun 29, 2026, 10:19 PM

  @cnlohr @qwazix It has a rare brilliance to it 😃. But conceptually nothing particularly wrong with the idea. So 25 different delays depending on key? (n-key roll over would be right out if so 😃)

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