Antenna Build Series 2- How to Build a Multiband Fan Dipole

Поділитися
Вставка
  • Опубліковано 4 січ 2025

КОМЕНТАРІ • 34

  • @garyclark4930
    @garyclark4930 Рік тому +3

    I made a fan dipole for 40, 30, 20, and 10. Of course 15 is there also.
    My spacing is 3 in. I drilled the holes in the spacers just big enough
    that the wires fit snug and added zip ties. I completed my 20 meter
    WAS Award with it and 2 more left on 30 meters.
    I like your method of teaching. Bite size information that leads into
    the next lesson and easy to understand. especially newer Hams. KF6EWO

    • @kj7iaz
      @kj7iaz  Рік тому

      Thanks for sharing! I have a plan for the next one, to make these into verticals. Just need time to record it haha.

  • @tangowhiskey7476
    @tangowhiskey7476 Рік тому +2

    You might be surprised how well it will work without the spacers. Just use a light weight rope on each element and space the end attachment points slightly apart on the support ends. Spacing is not critical and tuning is just like you described, starting at 40 and working your way up freq. Makes a great portable or semi permanent multi band antenna and is much more stealthy. Thanks for a great video. 73, N9XDS.

    • @kj7iaz
      @kj7iaz  Рік тому

      I might have to try that next time or make a portable version. Thanks for the idea

    • @johanwithag2432
      @johanwithag2432 8 днів тому +1

      I have it hanging without spacers, but i don't like it. I have it now in a mustache configuration with an isolator and rope for every single wire. It's a mess. Every wire (6 wires for 40-20-10) ) has its own pulley with it's own weight. Somehow the wires are still going to touch and twist. I'm going to fix them together with 2 inch spacing.
      I heard 1 inch spacing might even work. Spacing seems not to critical.

    • @kj7iaz
      @kj7iaz  8 днів тому

      @johanwithag2432 yeah. Seems like i have yet to figure something out for fans, always touching and twisting. The spacers are alright, but they catch the wind and wind up too.

  • @DK5ONV
    @DK5ONV Рік тому +3

    Awsome built

    • @kj7iaz
      @kj7iaz  Рік тому

      Thanks. Male sure to watch episode 3. It shows the fan dipoles main weakness.

  • @CURTIS-W5CER
    @CURTIS-W5CER Рік тому +1

    For keeping the wires from sliding in and out of the spacers, you could drill holes straight through the PVC and use zip ties on either side. That would look better than the tape. But still an awesome antenna build.

    • @kj7iaz
      @kj7iaz  Рік тому +1

      Yeah for sure it'd look better haha. I might try that next time. I'm sure there is atleast 100 better ways to do it. I kind of enjoy slapping stuff together.

    • @CURTIS-W5CER
      @CURTIS-W5CER Рік тому

      @@kj7iaz I'm actually going to be building a fan dipole for the exact same frequencies here soon... probably this weekend.

    • @kj7iaz
      @kj7iaz  Рік тому +1

      Cool. Use full length spacers. Watch the trap dipole video, i start with the mess the wind made on the fan. I like the fan but it can be temperamental in the wind. Better , longer spacers should help, but watch it as to get an idea, should help you avoid the same issue.

    • @davidhodgson977
      @davidhodgson977 Рік тому +1

      Great idea cheers

  • @CURTIS-W5CER
    @CURTIS-W5CER Рік тому +2

    I was just sitting here thinking about antennas... as I often do lol and a thought came to me. I don't really have room for a 40 meter dipole. I was wondering what the effect would be of.....
    ...a fan dipole for 20, 10, and 6 meters... WITH a top vertical ham stick tuned for 40m.
    I wonder if that would work. Would the needed ground radials be supplied by the dipoles of the other bands? I wonder.

    • @kj7iaz
      @kj7iaz  Рік тому +1

      I'd recommend a trapped dipole. Or a fan and load the 40m element. Or do 2 hamsticks in a vertical dipole configuration with the elements of the fan coming off the bracket and the vertical element somehow.

    • @CURTIS-W5CER
      @CURTIS-W5CER Рік тому

      @kj7iaz I like that idea of 2 ham sticks in a vertical dipole configuration better. That way, it would still be a half wave dipole. Just vertical. And then the other bands coming off the center feed in a horizontal dipole. A feed point for all would be easy enough to design.

    • @kj7iaz
      @kj7iaz  Рік тому +1

      Hit me up on Facebook. Ill show you a cool thing I made that uses ham sticks in a ground plane config

    • @CURTIS-W5CER
      @CURTIS-W5CER Рік тому

      @@kj7iaz same name as the UA-cam channel?

  • @frequencywatchers
    @frequencywatchers Рік тому +1

    Whst. A Great Antenna.
    I Have Made ALL BAND ALL FREQUENCY ANTENNA, works for Recsption and works good for Me.
    Its a Long Wire Dipole = its a super strange antenna, But i made it by my math and my ideas and it works... need to make a video on it.
    But super cool video, Want to make Your Antenna Now

  • @cliftonhead9665
    @cliftonhead9665 2 місяці тому +1

    Tried downloading your antenna/band lengths calculator and nothing working or cant open files.

    • @kj7iaz
      @kj7iaz  2 місяці тому

      Hey if you don't mind , email me at kj7iaz@gmail.com. maybe a screenshot or something too. I'll look into it.

    • @kj7iaz
      @kj7iaz  2 місяці тому

      Also I just uploaded a new app, and had to reconfirm my account, so maybe it has something to do with it.

    • @cliftonhead9665
      @cliftonhead9665 2 місяці тому

      @@kj7iaz Thanks anyway would have love to use the format/

    • @kj7iaz
      @kj7iaz  2 місяці тому

      It's a great option. Make sure your updated, if you email me I can help you better. Let me know.

    • @kj7iaz
      @kj7iaz  2 місяці тому

      @cliftonhead9665 i just realized, are you talking about the spreadsheet from the website? If so email me and I can send it as attachment.

  • @garygill7960
    @garygill7960 8 місяців тому

    Thank you

    • @kj7iaz
      @kj7iaz  7 місяців тому

      You're welcome

  • @donepearce
    @donepearce 9 місяців тому +2

    Moral of the story - always cut oversize so you can trim back.

    • @kj7iaz
      @kj7iaz  7 місяців тому

      Ain't that the truth

  • @davidhodgson977
    @davidhodgson977 Рік тому +2

    Cheers, I'm going to make one. HS0ZQA David

    • @kj7iaz
      @kj7iaz  Рік тому

      Do it! It's a great project. Which bands?

    • @davidhodgson977
      @davidhodgson977 Рік тому +1

      @kj7iaz I have made one, a two bander 20 and 15 metres. I had it tuned and in the air in one hour, the dipole for 20 was already cut.
      I will add some more bands when I get some more wire.
      Maybe 6 metres.