jks

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jks
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  • Practical PCB RF design

    jksjks

    Wow, one of the few times the YouTube algorithm has recommended an extremely useful video.

    In a few minutes I learned more about practical PCB RF design than I ever knew. Very easy to understand: https://www.youtube.com/watch?v=xhuHAhIKWoM

    HB9TMC

  • This is why we can't have nice things

    jksjks

    And there went half my day. This is from the forum server. Goddamn Chinese AI companies. OpenAI.com too (although they were slightly better behaved). I had to beef up the IP filtering on the forum server to match what the proxy/web server (kiwisdr.com) has.

    Screenshot 2025-06-29 at 12.04.27 PM.png


    nitroengine

  • What are these downchirp transmissions ?

    jksjks

    I think there was a discussion about this a long time ago. There are indeed industrial drying machines, amongst others as @studentkra mentions, running huge RF power that cycle on & off to dry wood and other materials. Since they're built as cheaply as possible frequency stability is probably not high on the agenda. They're not supposed to leak RF either, but you know how that goes..

    F5AFYstudentkra

  • v1.813

    jksjks

    Okay, got that fixed for the next release. Had to implement kiwirecorder camping is a slightly different way.

    F5AFY

  • v1.813

    jksjks

    @F5AFY Yeah, I see that. Not sure what's going on yet. Thanks

    F5AFY