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And I Thought WA6MHZ's Rooftop Was Crowded!

Discussion in 'Ham Radio Discussions' started by NL7W, Aug 23, 2014.

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  1. NL7W

    NL7W Premium Subscriber QRZ Page

    Pat, WA6MHZ, has nothing on this Japanese ham, JO1PYV.

    IMGP0090_2.JPG

    You'd better get busy, Pat, you've got some catching up to do...

    ...

    Everyone, please post your antenna system pictures. Here's my latest:

    Cropped.JPG
     
  2. N9DSJ

    N9DSJ Ham Member QRZ Page

    Tie them all together -- it would be very...errr, "fractal"
     
  3. WA6MHZ

    WA6MHZ Subscriber QRZ Page

    WOW!!! He really knows how to overload the ROOF TOWERS!! Those are the same CREATE 15ft roof towers I have and the one to the left has a KT-34 (LIKE I DO!) plus a 2 element 40M beam and then a 6 element 6 meter beam. I didn't dare put anything else up on it but the KT34! and I have 4 guy sets. Yep I am put to shame!

    Here is all I dared to put up, but we get high winds in Crest and I don't want it blowing over (Pic taken before I got the KT34 fixed, now it has 4 elements)

    [​IMG]
     
  4. W7UUU

    W7UUU Super Moderator Lifetime Member 133 Administrator Volunteer Moderator Platinum Subscriber Life Member QRZ Page

    Yikes! That's exactly what my wife feared. But she's 100% happy with how all my beams turned out. I even
    make a point to align them North South at the end of a session so they look all tidy up there :)

    Dave
    W7UUU
     

    Attached Files:

  5. K9STH

    K9STH Platinum Subscriber Volunteer Moderator Platinum Subscriber QRZ Page

  6. WN6U

    WN6U Subscriber QRZ Page

    Antenna envy. Yet another "condition" to "medicate"? :confused:
     
  7. KM5FL

    KM5FL Ham Member QRZ Page

    This is my "pre-Rita" tower..

    Starting at the top and working down:

    Comet CX-333
    Cushcraft 13B-2
    Left on cross boom is homebrew 11 el for 222 mhz
    Right on cross boom is homebrew 11 el for 431 mhz
    Homebrew 5 el for 6 meters
    Hustler triband 10/25/20
    Not shown is fan dipole for 40, 80 meters

    Tower thrust plate is at 65 feet, and top of CX-333 is 96 feet..

    Farm #2.jpg


    KM5FL
     
  8. AA9G

    AA9G Premium Subscriber QRZ Page

    Another Saturday night of antenna porn. :cool:
     
  9. WA7PRC

    WA7PRC Ham Member QRZ Page

    [table]
    [tr]
    [td]Most of my stuff is hanging onto my 72' tall US Tower TX-472 w/ HD raising fixture, coax arms, 2"OD x 1/4"THK x 15' steel mast, Hy-Gain HDR300 rotator:
    [​IMG]
    Click Image for full size photo.
    The full 79 photo+text story can be seen at this link.[/td]
    [td]The antennas:
    • Force12 C-4XL yagi at 72' for 40/20/15/10m, 2 full-size elements on each of 20/15/10m bands (10m has two driven elements). 40m uses linear-loaded elements. F12 says it can be used on 17 and 12m w/ a tuner. I found my TS850SAT likes it fine on 17m w/o its tuner. The TS-850's ATU easily "pulls it in" on 12m.
    • 80m 4 wire cage interted vee at 70' covers ALL of 80m w/o a tuner. I added a vacuum relay in a box that allows me to drive the feedline as a vertical against ground on 160m (the inv vee acts as a top hat). To work on 160, this requires NO balun at the feedpoint. I have only about half of the 2400' of radials "planted". Still, so far, it seems to work OK on 160, and the TS850's ATU tunes it fine.
    • 40m dipole cut for 7.05 MHz covers almost all of 40m, and works fine on 15m. It hangs off another sidearm below and 90° to the 80/160m antenna.
    • Cushcraft AR-10 λ/2 vertical for 10m is mounted at 83' AGL to the top of the mast that supports the yagi boom. The top of the 16' tall vertical is then at 99' AGL. I originally bought the AR10 to work the locals, with it mounted to a mast at 20' AGL. It still does that but, now also works DX! :)
    • Not shown is my homebrew 20m λ/2 vertical on the peak of the house roof. I decided to fabricate the inductor such that its length could be adjusted, as well as the tuning capacitor. With L&C set to the values indicated by the free design program on smeter.net, I didn't need to do any further tuning. It was close enough!
    • Also not shown is my Cushcraft A3S at 30' on a homebrew tilt-up aluminum pipe & structural tube mast. A CDE TR-44 rotator sits at the bottom of the mast on a hinge plate. A homebrew rotating guy collar allows the mast to turn. With the big yagi on the tower, the only time the A3S gets used is during multi-multi contest work.
    [/td]
    [/tr]
    [/table]
     
  10. W9YAC

    W9YAC Ham Member QRZ Page

    image.jpg

    TX-472 with mast for a 75' height at the SteppIR DB18, and motorized up/down. At the base is a NEMA 4X enclosure with a 1/4" backplate for TVSS units on coax, SteppIR control, and rotator cables. Tower base has extensive star pattern grounding conductors, also connected to aluminum plate with 4" wide copper strap. Tower is about 100' from shack and antenna is fed with 7/8" Andrew hardline.

    Not shown is a 75' utility pole with yardarm at top for 200' non-resonant dipole fed with home-brew ladder line.
     
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