Monday, 11 January 2021

80m, 40m, 30m, 20m EFHW Antenna Antenna Tuner

The antenna length is 41m and the counterpoise 7.5m.

Tunes 80m, 40m, 30m and 20m.




7 comments:

  1. Hi Charlie,
    A quick question. In the title of this EFHW tuner, it says 80m,40m,30m,20m, but in the handwritten notes, it shows 80m,40m,10m. Which is it please? Hopefully it covers 10m, but I can always make another for the higher bands.
    73
    Graham
    CT7AXD

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  2. Hi Graham. The ATU tuned up the 41m antenna and 7.5m counterpoise on 80, 40, 30 and 20m. I fully expect it would tune up 10m with a shorter antenna, as that antenna would present the same Z to the tuner.

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    Replies
    1. Will give it go and see what it can do, and with a shorter aerial for 15m - 10m.

      73

      Delete
  3. excelent very easy to follow your design. thanks

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