re: Evaluating antennas

[Mike Cizek W3MC]

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
[hidden email]
FOC # 1739
HSC # 1849
  ----- Original Message -----
  From: Ken Kopp
  To: [hidden email]
  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
  [hidden email]
  or
  [hidden email]



  Ken Kopp - K0PP
  [hidden email]
  or
  [hidden email]

  _______________________________________________
  Elecraft mailing list
  Post to: [hidden email]
  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
[hidden email]
FOC # 1739
HSC # 1849


_______________________________________________
Elecraft mailing list
Post to: [hidden email]
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