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  1. Oscar Goldman

    Antenna height

    I wonder how the pattern would look at 1/2 wavelength above ground to the feed point.
  2. Oscar Goldman

    homebrew astroplane build

    Hoop diameter 29.75 Lower elements from top of bracket to ring 92.5 Straight top section, from top of bracket to tip 88 inches. Element separation at feed bracket 6 inches center to center. Element separation 48 inches below feed bracket 11 inches center to center.
  3. Oscar Goldman

    homebrew astroplane build

    When I get to the shop I will measure it and post them. I have my custom built sigma 4 up right now, so the astro plane is hanging up.
  4. Oscar Goldman

    homebrew astroplane build

    I still have the one I custom built, if anyone needs measurements. Still works great
  5. Oscar Goldman

    Base HY-GAIN PENETRATOR vs Maco V58

    Not quite sure what you mean
  6. Oscar Goldman

    Base HY-GAIN PENETRATOR vs Maco V58

    The Colossal's vertical element is 21.5 feet, this is not including the base tube and insulator height. The spec's are right on their website
  7. Oscar Goldman

    Zero-five antenna

    It is a parallel tuned network.
  8. Oscar Goldman

    Thanks Jay in the Mojave

    Can you message me
  9. Oscar Goldman

    Thanks Jay in the Mojave

    I have a I10K brand new I am willing to sell.
  10. Oscar Goldman

    Base New Vector 4K radiator at 0.75 - 0.82 - 0.875 wavelength.

    The center tube is 31 inches long and 1 inch outside diameter, the Teflon insulator tube is 6 inches long and 1 1/12 in OD and 1 inch ID. The outer aluminum tube is 1 5/8 OD and 1 1/2 ID
  11. Oscar Goldman

    Base New Vector 4K radiator at 0.75 - 0.82 - 0.875 wavelength.

    One of the pictures posted was of the gamma. It is a variable slide capacitor set at 48pf. I can give you the measurements if you like.
  12. Oscar Goldman

    Base New Vector 4K radiator at 0.75 - 0.82 - 0.875 wavelength.

    Thanks Bob Here are some more pictures. I used Teflon bar for the basket spreaders.
  13. Oscar Goldman

    Base New Vector 4K radiator at 0.75 - 0.82 - 0.875 wavelength.

    Finished and installed works great. Built a 20kw Teflon Capacitor for it. Built to sigma 4 spec's and added a 4th basket support. Vertical element is larger diameter tubing. Has offset radial hub.
  14. Oscar Goldman

    Want to replace my Gainmaster.

    My custom heavy duty Sigma 4/ Vector 4000 copy I built. Weighs 21lbs with a 20k teflon gamma match
  15. Oscar Goldman

    Base New Vector 4K radiator at 0.75 - 0.82 - 0.875 wavelength.

    Finished my build and tested it on the air, works great and is about 2 s-units better than my Astro plane. Match was perfect with around 49pf of capacitance in the gamma.
  16. Oscar Goldman

    Base New Vector 4K radiator at 0.75 - 0.82 - 0.875 wavelength.

    I know this is an old thread. But has anyone modeled this antenna at just 18 feet off the ground to the feed point. I am wondering what the pattern will look like. I am building one right now that will be mounted at that height. Thanks
  17. Oscar Goldman

    Base HY-GAIN PENETRATOR vs Maco V58

    Nice job with the upper insulator, that should fix the arcing problem.
  18. Oscar Goldman

    Base PDL II

    Mine is a photo copy
  19. Oscar Goldman

    Base PDL II

    I have that pdl2 book if you need copies of any of the pages
  20. Oscar Goldman

    Any Astro Plane Fans ?

    I have mine at the same height as your, and it works great for local and DX.
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