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Why does the ATU button stay red?

Bryan77
Bryan77 Member ✭
in FLEX-6000 Signature Series
I have a EFLW antenna that is suppose to cover 80-6 M. On all other bands the ATU
functions normally BUT on 80M (CW Area) the ATU goes thru its routine and then the button stays red. I don't normally do SSB in the 80M band as I am running barefoot
on all bands... The radio seems to be trans ok...

Best Answers

  • Mike-VA3MW
    Mike-VA3MW Administrator, FlexRadio Employee, Community Manager, Super Elmer, Moderator admin
    Answer ✓

    It says Red when the ATU can't find a solution.

    This can be for many reasons but it is often due to the fact that a solution cannot be found.

    You may also find that adding a Mix 31 or 43 choke to your feedline near that radio will help. Do not add any chokes that are closer to 1/4 wavelength from the feed point at the lowest frequency. For 80M this is about 65ft.

    This might help https://vu2nsb.com/antenna/wire-antennas/multiband-efhw-antenna/

  • Mike-VA3MW
    Mike-VA3MW Administrator, FlexRadio Employee, Community Manager, Super Elmer, Moderator admin
    Answer ✓

    Yes, he is.

    As many find out, End Fed Halfway antennas do require some installation care.

    73

Answers

  • Bryan77
    Bryan77 Member ✭
    Wow vu2nsb site is a treasure trove of sage information!

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