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Handy 1 kW HF Dummy Load

Discussion in 'Home Brew' started by vu2nan, Jan 5, 2015.

  1. vu2nan

    vu2nan Active Member

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  2. Captain Kilowatt

    Captain Kilowatt Professional Amateur
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    Hard to say what the actual impedance is when operating at HF but it is likely good enough for a tube transmitter or amplifier. Back when I was in broadcasting we had a couple home made dummy loads for our 1 Kw AM transmitters. One used two oven elements mounted wired in series on the wall in a V shape and another used two large stove top elements also wired in series. The stove top elements only required a very small home made coil and a single capacitor to make it a pure 50 ohms on the high end of the AM broadcast band. Both loads would take 1 Kw at full modulation making it 4 Kw pep. Not sure what they would be like on HF but with the proper L/C it should work anywhere.
     
    unit_399 likes this.
  3. vu2nan

    vu2nan Active Member

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    Hi OM,

    That's interesting!

    Many thanks,

    73,

    Nandu.
     
  4. Heavy Metal

    Heavy Metal Active Member

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    Wow, post some pics and also parts list please.
     
  5. vu2nan

    vu2nan Active Member

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