Side by side 20 meter yagi array

Discussion in 'Antennas, Feedlines, Towers & Rotors' started by KG8YA, Aug 9, 2020.

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  1. KG8YA

    KG8YA Ham Member QRZ Page

    Can't find much info on 20 metet yagi array side by side (2 towers) in lieu of the vertical stack array
     
  2. WA7ARK

    WA7ARK Ham Member QRZ Page

    Great application for AutoEz driving EzNec 6+.
     
  3. AI3V

    AI3V Ham Member QRZ Page

    And why do you suppose that is?

    Rege
     
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  4. KU3X

    KU3X Ham Member QRZ Page

    Many year ago, long before the internet, there was a guy, I think he was in CA, that had the following:

    Massive free standing tower, over 100 feet tall. On top was a work platform. For a mast, he used I think it was Rohn 45. I'm pretty sure it was not 25.
    Attached to the rotatable mast were 6 antennas. The yagi's were mono band for 20 meters. They were either 5 element of 6 element. So on one side of the mast were three stacked 20 meter yagi's. On the other side of the mast were three more stacked 20 meter yagi's.
    I may be wrong but I am pretty sure the array was 6 over 6 over 6 and on the other side the same.

    So is it do-able? Yes, but that project had one heck of a price tag.

    I am not the only old ham on QRZ. Maybe someone else has a better memory and can qualify what I just posted.
    This array was on the cover of one of the ham radio magazines, possibly QST?
    Barry, KU3X
     
    Last edited: Aug 9, 2020
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  5. KM3F

    KM3F Ham Member QRZ Page

    Your question is quite broad.
    What are you intending to accomplish?
    How far apart are the towers to be?
    If on separate rotors creates complex pattern issues if phased with feed lines of multiple odd quarter wave electrical lengths.
     
  6. AC6LA

    AC6LA Ham Member QRZ Page

    You mean like this?

    [​IMG]
    Which results in this azimuth pattern.

    [​IMG]

    Full details at Coupled Yagis on Separate Towers.

    Dan, AC6LA
     
  7. W1VT

    W1VT Ham Member QRZ Page

    JUN 1980 - QST (PG. 52)
    Collinear Yagi Sextet, The

    Author: Clement, A.J.F., W6KPC
     
  8. KG8YA

    KG8YA Ham Member QRZ Page

     
  9. KG8YA

    KG8YA Ham Member QRZ Page

    thanks for info. idea was curious of was to disassemble my pased stacked array at 105 feet and 40 feet non rotating toward europe and reworking to two shorter towers side by side and yagis toward europe. Not conerned about rotating, just curious of how may work. i think i would lose the vertical stack low take off angle. large antennas up real high take lottsa resources to work on..
     
  10. KG8YA

    KG8YA Ham Member QRZ Page

     

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