Topband: Do short beverages "work"?
eldridge at direct.ca
Sun Jan 23 16:45:07 PST 2011
It depends what you mean by "really short". Some consider a half wave
to be really short. Beverage Rice and Kellogg original AIEE paper
showed that there is not much difference in the pattern of a half wave
and a full wave, but considerable difference when you go to 2 wave.
They considered the half wave to be working as a Wave antenna, and for
sure the ones I have used (6 ft or so above ground) had useful
directivity on 160.
----- Original Message -----
From: "Rick Karlquist" <richard at karlquist.com>
To: "K4RO Kirk Pickering" <k4ro at k4ro.net>
Cc: <topband at contesting.com>
Sent: Sunday, January 23, 2011 7:39 AM
Subject: Topband: Do short beverages "work"?
> I have been reading these testimonials about how well short
> beverages work. It depends on what you mean by "work".
> They might be useful antennas, but whether they are
> functioning as beverages is another matter. At least
> at my QTH, a low (30 feet high) dipole is usually a better
> receive antenna that a vertical. A low dipole is omnidirectional
> as far as I can tell. A beverage that is working as a beverage
> will exhibit very noticeable nulls. It would be interesting
> to see if really short beverages exhibit these nulls. Otherwise,
> useful as they may be, they are acting a degenerate low dipoles,
> but still beat listening on the transmit antenna.
> Rick N6RK
> UR RST IS ... ... ..9 QSB QSB - hw? BK
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