80m double power output?

Discussion in 'Ham Radio Discussions' started by KD2KUB, Feb 13, 2018.

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  1. KD2KUB

    KD2KUB XML Subscriber QRZ Page

    I have an FT817 that i have tested through a dummy load and a bird watt meter(50H slug). All bands are relatively around 5W of output power(4.9 - 5.1).

    On 80m I get 10W of power output on my cobra ultralight antenna. My EFHW vertical, I get 5W as well as my NVIS antenna.

    Perplexed as to why my Cobra antenna shows 10W and my other antennas show 5W when my FT817 only puts out 5W. I have tried my KX3 in this same manner and I do not have any issues of this sort.

    I am using an elecraft T1 tuner on my FT817.

  2. KY5U

    KY5U Subscriber QRZ Page

    SWR can make some watt meters show extra power.
  3. KD2KUB

    KD2KUB XML Subscriber QRZ Page

    I just tried a small test using 2 different tuners. using my LDG Z817 tuner, that presents a 4 bars (1.4:1 I think) SWR on my FT817 SWR meter while my T1 Tuner actually presents a 1:1 on my FT817 and that produces 10W out on my bird watt meter. With the z817, my watt meter shows 5W.


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