I absolutely and completely agree with Ken, despite having only half of his
experience. (30 years, and only two towers - 100' & 125' with six rotatable
beams). The old fashioned open wire dipole - doublet to our UK brethren -
when fed with a proper balanced tuner - is extremely efficient and
effective. Read what Maxwell has to say about them in his book
"Reflections", or look at results with an antenna modelling program. The
80m dipole at 65', when used on the higher bands, will have gain equal to a
3 element yagi in its favored directions.
73,
Mike Cizek W3MC
[EMAIL PROTECTED]
FOC # 1739
HSC # 1849
----- Original Message -----
From: Ken Kopp
To: [email protected]
Sent: Wednesday, 21 February, 2007 19:48
Subject: [Elecraft] Evaluating antennas
Given all the discussion about the various antennas ....
I do wire antenna seminars at conventions and hamfests, and
usually in some way tell my audience the following:
NO antenna is ever high enough! (:-)
Many years ago ... 50+ ... I put up (too) many antennas in
the quest for the perfect radiator, and I offer the following
observation.
No antenna should be "written off" without a long period of
evaluation ... perhaps several weeks or more. At the time I
was in hot pursuit of "something better" and would change
an antenna too often ... even from one day to the next.
I eventually learned that there are many factors that can influence
how well antenna will work for you. I didn't understand about
the fickle ways of the propogation gods, sunspots, the antenna's
surroundings, etc. and that these factors will deternine how your
new antenna will work to a greater degree than what "kind" of
antenna it is.
I have four 100' towers and some of today's "best" antennas
fed with "hardline", but if I had to choose only one it would be
the 80M half-wave at 65' that's fed with home-made open wire
and a Johnson Matchbox.
73! Ken Kopp - K0PP
[EMAIL PROTECTED]
or
[EMAIL PROTECTED]
Ken Kopp - K0PP
[EMAIL PROTECTED]
or
[EMAIL PROTECTED]
_______________________________________________
Elecraft mailing list
Post to: [email protected]
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com
Mike Cizek W3MC
[EMAIL PROTECTED]
FOC # 1739
HSC # 1849
_______________________________________________
Elecraft mailing list
Post to: [email protected]
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com
