[Antennas] RE: Gain with wire

Tue, 02 Apr 2002 15:36:09 -0600

Two commercial all-band wire antennas with "gain" (and directionality, esp. on
20-10) that I have used with considerable success are (1) the Barker &
Williamson BWD 1.8-30, which is coax feed and gives you vy low SWR all bands
from 160-10, without a tuner, and hangs in 90' of space.  Higher the better,
since it's hoizontally polarized.  (This is probably the single most widely used
antenna in the world; tens of thousands of them in use by commercial, military,
govt., and amateur stations on every continent and almost every country.And it's
certasinly one of the best made wire antennas I've ever seen.)

(2) the other commercial antenna is the Radio Works Carolina Beam/80, which
gives you 80-10, with SWR above 2:1, but is also coax fed and is easily handled
by any tuner, and hangs in 80-100'.  Height is not quite as crucial here because
the Carolina Beam is mostly vertically polarized.  Of course, the better the
ground within a few wavelengths the better it'll work, as with all vertically
polarized antennas.

GL and vy 73 to all!  Jan N0JR

Jim Shaw wrote:

> I suspect you can readily install an 'Extended Double Zepp' (EDZ) which is a
> single wire antenna that will give theoretical gain of 3 DBd with broadside
> radiation patterns similar to a dipole.   A single band version is described
> in the ARRL's "Wire Antenna Classics" (pages 4-3 thru 4-6) and in the ARRL's
> "More Wire Antenna Classics Volume 2" (pages 5-1 thru 5-7).  The theory is
> addressed in the ARRL's "Antenna Book", 19th Edition (pages 8-35 thru 8-39).
>
>   Personally, I am thinking of trying the single wire, multiband, coax fed
> version of the EDZ for 10/15/20 named the EXJAY that is described in the
> book "The Antenna File" (pg 15-17) published by the Radio Society of Great
> Britain (and sold by the ARRL).  The author had a similar environmental need
> and details several other antennas he built before settling in on this
> single wire antenna.  It is about 90 feet or so in length and, if you want
> the full benefit of its gain, should be mounted horizontally at a height of
> 30 feet or more.
>
> Regards
> Jim Shaw, WA6PXU
> [email protected]
> 408-973-1608
>
> - - -
>
> Your moderator for this list is:
> Larry Wilson KE1HZ [email protected]
> _______________________________________________
> Antennas mailing list
> [email protected]
> http://mailman.qth.net/mailman/listinfo/antennas

--
"There is no end to what you can accomplish
if you don't care who gets the credit."