Best multi-band, no-radials vertical?

Discussion in 'Ham Radio Discussions' started by AD8DT, Dec 26, 2017.

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  1. WA4KCN

    WA4KCN XML Subscriber QRZ Page

    I have owned an R7 vertical for perhaps 30 years. It was used regularly when I was moving every 3 years with my company. It worked great and can be used in most HOA’s without problem. Just get to know your neighbors. The R7 is an electrical half wave trapped vertical with a very small counterpoise drooping to bring impedance up fed with impedance transforme. It’s small and works very well.
    N2EY likes this.
  2. KA2RRK

    KA2RRK Platinum Subscriber Platinum Subscriber QRZ Page

    Yes, yes, yes.

    This one is easy!

    Buy a 1973 Cadillac Eldorado hardtop, can't be a soft top, from local salvage yard. Transport it
    to driveway.

    Buy a Scorpion or Tarheel, mount it dead center of roof.

    Remove engine and transmission for resale and trunk and engine hood remove for you got it

    Move, drag to a clear spot in front yard. Remove tires, run lmr400 to it.

    Now, call soil salesman for a truck load of garden grade topsoil, Fill engine and
    Trunk compartments with soil.

    Then plant marigolds next spring.

    Leftover soil pile around the wheel areas.

    Sell parts removed, buy biggest amp you can find and net.

    Feed Scorpion a lot watts and watch the log book grow!

    G0GCD, W4ZD and WG8Z like this.
  3. K5MIL

    K5MIL Ham Member QRZ Page

    The fan dipole stood on end has one half of the dipole that acts as radials, whereas a no radials vertical is just that, no radials, just half of a dipole sticking up in the air.

    Bill - K5MIL
  4. KK5JY

    KK5JY Ham Member QRZ Page

    I think it's actually the other way around -- a quarter-wavelength vertical with radials uses the radials to emulate the other half of the dipole that isn't there.

    A quarter-wavelength vertical with no radials still uses the ground as its counterpoise, wires or not. The problem with most "grounds" is that they are very lossy.

    A vertical dipole is just that. Just look at any Yagi. :)
    KD4IEM likes this.
  5. W4ZD

    W4ZD Ham Member QRZ Page

    Reminds me of Yagi Berra. Great catcher, profound philosopher. :)
    KK5JY likes this.
  6. WE4E

    WE4E Premium Subscriber QRZ Page

    "Ham radio is 90% mental and the other half is physical."
    KA2CZU and W4ZD like this.
  7. F8BDX

    F8BDX Ham Member QRZ Page

  8. KK5JY

    KK5JY Ham Member QRZ Page

    The story I heard was that Mr. Uda did most of the work, but Mr. Yagi got top billing for the invention.

    I can both identify and sympathize with Mr. Uda, but I understand that Uda Berra doesn't have quite the same ring to it. :eek: ;)
  9. WA1NTI

    WA1NTI Ham Member QRZ Page

    The Comet CHA-250 works as an End Fed. The transformer at the base is a matching unit to allow the wide frequency range. Installing radials is really not worth the effort as technically it may set up as a vertical but it is not tuned as one.
  10. W3WN

    W3WN Ham Member QRZ Page

    Sorry, didn’t realize this was a Zombie post. Never mind.

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