Last few of the GM3SEK Triode Boards and Tetrode Boards

Discussion in 'Amateur Radio Amplifiers' started by GM3SEK, Jan 30, 2020.

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  1. GM3SEK

    GM3SEK Ham Member QRZ Page

    After 20 years and almost 2500 sets of boards and kits, only 12 sets of Tetrode Boards and 9 Triode Boards remain.

    I really would like to sell these last few boards, so that I can close the books... but when they're gone, they're gone.

    If you can still see the PayPal buttons on the order page at
    that means boards are still available.

    73 from Ian GM3SEK
  2. GM3SEK

    GM3SEK Ham Member QRZ Page

    ...and now they're gone.

    73 from Ian GM3SEK
  3. VA3DXV

    VA3DXV Ham Member QRZ Page

    Glad I bought them when I did! Thank you for a great product.

    Just curious, any chance of offering the PCB files up for download? Or putting it up shared in easyeda or something?
  4. GM3SEK

    GM3SEK Ham Member QRZ Page

    Sorry, that just isn't workable. Guess who would still be receiving all the emails asking for support?

    I may reconsider that decision at some later time... but probably not until I'm gone where email cannot follow.

    73 from Ian GM3SEK
  5. W2BX

    W2BX Ham Member QRZ Page

    Is the schematic available?

    If anyone has an extra set, I could sure use on for this 4CX350 project I'm working on.
    Crap! Too late..I missed out... story of my life. (grin)

    Glenn W2BX
  6. GM3SEK

    GM3SEK Ham Member QRZ Page

    The schematics of the Triode and Tetrode Boards are still available in the User Manuals, along with a lot more information about the design and applications. Follow the links from

    73 from Ian GM3SEK
  7. W2BX

    W2BX Ham Member QRZ Page

    Thanks Ian. I'll check it out. Probably go with a breadboard layout.
    Too bad we can't have the PCB files.
  8. N8CBX

    N8CBX Ham Member QRZ Page

    About 5 years ago, I made my own triode control board using the best of Ian's circuit board. But, I replaced his digital circuits with a microprocessor (Arduino) and I programmed it to include Ian's current monitoring & alarms, plus a lot more.
    Jan N8CBX
  9. KW9F

    KW9F Ham Member QRZ Page

    Anyone have a Triode board available?

  10. W9JSW

    W9JSW Ham Member QRZ Page

    Sent you a PM

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