Re: [TowerTalk] Hustler mobile resonators dipole

[Pete Smith <n4zr@contesting.com>]

Pretty funny -- I wasn't sure what Tom meant by a "Marconi", so I went to 
the ARRL Antenna Book to look it up, and the only reference in the index 
was to the guy who did those early experiments -- *that* Marconi.  ON4UN's 
book had no index reference to Marconi at all.

From context, I infer that Tom is talking about base-feeding one mobile 
whip, as originally intended, and placing it over a good ground 
plane.  Correct?  In that case, wouldn't another, more efficient mobile 
antenna be a better choice?  I used a Hustler mobile whip in a garden 
apartment back in the 70's, and while it worked, I never had really good 
feelings about the resonator, since it got warm with only 100 watts CW.

73, Pete N4ZR



At 07:39 AM 10/18/2004, Tom Rauch wrote:

> >   Specifically, I have been thinking of using two 80 meter
> > Hustler/Newtronics mobile resonators fastened back to back
> in a dipole
> > configuration. Only instead of putting them in the more
> common horizontal
> > configuration, I was wanting to orient them in the
> vertical position.
>
> Scott,
>
> My suggestion would be you do something different.
>
> You will have much poorer efficiency with a vertical dipole
> of loaded elements compared to a similar height and coil
> style antenna worked as a Marconi against a good ground
> system.
>
>  If you can, you might consider as large a ground system as
> you can muster (as many straight radials as you can fit, or
> a screen) and a Marconi antenna. You will have less ground
> loss, less feedline radiation, wider bandwidth, and better
> antenna efficiency if you keep the same overall height and
> use the antenna as a Marconi. The only thing you have to do
> that is more work is install a ground of some type.
>
> A vertical dipole is workable, but decoupling the feedline
> is a chore and the losses are pretty high with two mobile
> antennas back-to-back.
>
> 73 Tom
>
>
> _______________________________________________
>
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>
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See: http://www.mscomputer.com  for "Self Supporting Towers", "Wireless Weather Stations", and lot's more.  Call Toll Free, 1-800-333-9041 with any questions and ask for Sherman, W2FLA.

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