I received quite a few replys with questions on EWEs, so here are my
Thje EWE antenna name is a cute way of saying "U" (upside down). The
EWE, of course, was the logo used in Floyd's (WA2WVL) article in Feb 1995
The design I am using on all five of my EWEs is the dual band design in
Floyd's article. A close look at the several designs he presents will
show that the patterns/gains, etc of this design are superior (in my
opinion) than those mentioned for single band. The design I use is: 15
ft verticals connected by a 38 ft horizontal wire. The verticals are
connected to a load resistor of 830 OHMs (10 OHMs smaller than that
suggested in the article 'cuz that's what Radio Shack had!) at the
receiving end and to a K2ZJ (ZJ Electronics) Beverage Box at the driven
end. All antennas are fed with RG-58 cable. Both verticals use 4 ft
copper ground rods with liberal application of Jet-Lube copper lubricant.
The two phased EWEs are separate EWEs, 130 ft apart (in the same plane,
so that an areial view of them would depict a rectangle with the corners
at the locations of the four verticals. They are fed with equal lengths
of RG-58, using a non-amplified K2ZJ Beverage Box and connected together
at the common point and impedance-matched with a 2:1 Minicircuits
transformer (model T2-2). The single feedline to the shack is RG-58 as
well. Total feed line length from shack to Minicircuits xformer = approx
100 ft. Length of equal-length feedlines to each EWE is 175 ft. I used
the unamplified box in this application because I suspected that the 10dB
gain in the ZJ box, if used, would swamp the T2-2 xformer. I have
noticed that the 10 dB gain in the box is really not necessary anyway.
I have used a Slinky Beverage made from 8 slinkys (total length = 50 ft).
The EWE always outperforms the slinky.
I mount 3.5 of my EWEs on the wooden fence line in my back yard. One of
the EWEs is suspended by two trees, 1/2 of another is in the trees. The
trees do not seem to affect performence.
BTW, the K2ZJ boxes attach directly to a 5/8 inch ground rod making them
very convenient. Check out the ZJ Electronics homepage, available from
the PVRC home page and elsewhere.
Glad to answer more Qs if any.