[Elecraft] antenna question

[Don Wilhelm]

Folks,
I agree 100%.
Now there is just one word of warning to those trying a non resonant antenna
for the first time --- some flattop/feedline combinations may present a
feedpoint impedance that will make then hard to tune with the tuners
commonly available today.
If that occurs, there are 2 possible cures - add or subtract some feedline
(don't know how much - you will have to experiment), or add some wire to the
antenna ends - just let it hang down if necessary.  Three to 5 feet added to
each end makes a difference at 40 meters - less at 80, and even more
difference at the higher frequencies.

Remember that if a 'leg length' is close to a half wave will be hard to feed
with all but a parallel tank circuit type balanced tuner (we can't hardly
buy these now-a-days).  The leg length that I am referring to is the length
of half the flattop plus the electrical length of the feedline (this is
length/0.95 for window line).  You did measure your feedline didn't you???
It helps in figuring what the matter may be.

73,
Don Wilhelm  - Wake Forest, NC   W3FPR home page: http://www.qsl.net/w3fpr/
  QRP-L # 485   K2  SN 0020   mailto: w3fpr@arrl.net

*** Life is what happens when you're making other plans -- Mike Cross  ***

----- Original Message -----

> Folks,
> George hit it on the head.  There are more reasons to use non resonant
> antennas fed with parallel line than to worry about measuring and cutting
> them to resonant length.  You are using the transmatch to make that
> unneeded.
>