On Sat, 6 May 2006, Steve wrote:
Thom,
Sorry for the delay in reply. I'm catching up on a bunch of email from
several email lists...
The author advocates using a 1/4 wave (less 5%) as a counterpoise for this
antenna.
I agree: this does sound a lot like the W3EDP antenna, which is described
in "Practical Wire Antennas", pg 33 (among other places). In this
reference, the W3EDP antenna is described as an 85' radiator and 17'
counterpoise. Connect both wires at the back of your tuner.
I use a w3edp radiatior length with 1/4 counterpoises for each band....and have
been told my the purists that my adding the counterpoises, it is no longer a
w3edp.
Seems to work...so now I will try the other lengths and see how that works,
since I have lost the end support for the longer wire due to development in the
area.
thanks
In the article "Taming the End-Fed Antenna" ("The Antenna File",
RGSB, pg
118) he looked at this issue by plotting various 1/2 wave
lengths and
proposed the following end-fed wire lengths:
- 26.5m (86.9 ft) for 160 - 10M use
- 15m (49.2 ft) for 80, 40, 20, 17, 15, 12, 10M use
- 10m (32.8 ft) for 80, 40, 30, 17, 15, 12, 10M use
Thom
www.baltimorehon.com/ Home of the Baltimore Lexicon
www.tlchost.net/hosting/ Web Hosting as low as 3.49/month
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