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Avanti AV 150...astrobeam

Discussion in 'Amateur Radio Antennas' started by davev8, Feb 17, 2018.

  1. davev8

    davev8 Gold Star/Marvin Award Member

    Apr 26, 2011
    Likes Received:
    was looking at this old beem .never see one ...will it get around the problem of the mast and feeder upsetting the pattern in a vertical beam ?


  2. Riverman71

    Riverman71 Part-time Member

    Nov 12, 2013
    Likes Received:
    Can't answer your question, but of all the antennas I had back in the 1970s the Astro Beam was my favorite.
  3. Tallman

    Tallman W9WDX Amateur Radio Member, KW4YJ EXTRA class

    May 1, 2013
    Likes Received:
    They were the ugliest antennas ever made. My neighbors hated mine. One offered to take it down and paint it for me, I knew I would never see it again if he took it down.
    The mast is part of the tuned antenna and I don't think it affects the radiation pattern.
    The only problem I had with it was that when it rained the SWR went up.
    Shadetree Mechanic likes this.
  4. 6meter

    6meter Active Member

    Apr 19, 2010
    Likes Received:
    That is an awesome story.

    Back in the day a friend had at Astrobeam mounted about 30 foot up and as i recall it did very well on sideband. He could hear a lot of stations that I couldn't when we were talking locally (no skip).
  5. Hurricane145

    Hurricane145 Active Member

    Aug 12, 2011
    Likes Received:
    I think they were just playing off the popularity of the Astro Plane omni. I had an Astro Plane omni antenna. Probably the best thing about it was it was easier to get it up higher
    than the other popular ground plane antennas like the Super Mag and the HyGain CLR-2.

    I drive by a business that still has an Astro Plane on the roof but it is all busted up and missing a lot of parts. Remnants of a bygone era!
    I don't see any way of getting around that with a vertical beam. Nonetheless they do work well. I had a 3 element vertical beam on CB for a short while. I doubt it affects the pattern all that much. Maybe acceptable losses so to speak. Only so much you can do about it. Maybe not as big a deal at HF than it is at VHF. The performance of a vertical beam on CB set up reasonably well should be a real eye opener compared to the usual omni.

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