Part of the issue will be that it is in an inverted Vee formation.
This antenna is meant to be horizontal.
ATB
David W Wood
-----Original Message-----
From: For blind ham radio operators [mailto:[log in to unmask]]
On Behalf Of Fred Adams
Sent: Sunday, August 04, 2013 12:46 PM
To: [log in to unmask]
Subject: Re: Update on 80 meter windom antenna
Steve, thanks for the response. No, I have no interest in 15 or 30 meters
with this antenna as I use another radio and antennas for those frequencies
plus other bands. I just want to get the most out of this antenna with the
least effort that I can. I will contact the manufactuer soon though.
Thanks much,
-----Original Message-----
From: For blind ham radio operators [mailto:[log in to unmask]]
On Behalf Of Steve Forst
Sent: Sunday, August 04, 2013 7:01 AM
To: [log in to unmask]
Subject: Re: Update on 80 meter windom antenna
Hi Fred,
Congrats on the new setup. You mentioned high and low swr points on
75/80. Did you test at intervals across the band to see if it dips low
anywhere? You may want to contact the manufacturer with your height
dimensions and swr info. They may be able to give some pointers that
may avoid a lot of trial and error. Since this thing works
harmonically on the higher bands (40, 20, 10) a major change in
overall length to adjust 75/80 may have unintended results on the other
bands.
I wonder if getting one or both ends up higher than 10 feet would do
anything positive?
Because of the harmonics involved, an 80 meter OFC antenna isn't really
designed to work on 30/15 meters. Depending on installation and your
particular tuner it can sometimes be tuned there, or not, as you see
with your setup. If 15 meters is important to you, you can add a
parallel dipole off the same feed point cut for 30 meters and fed off
center. This would then give you a harmonic resonance on 15, but this
may be more than you want to get involved with right now.
Mike KD2CDU checked in to the 40 meter roundtable yesterday with his new
OFC antenna and he was louder than I have ever heard him.
73, good luck, Steve KW3A
On 8/4/2013 6:01 AM, Fred Adams wrote:
> I think you guys remember me asking for info on the 10 thru 80 meter
> windom antenna a couple of weeks ago and I thought I would bring you
> up to date on my progress. I purchased the antenna from Radio WAVZ
> and got it up on my tower about 6 PM Friday evening so I haven't had time
for lots of testing.
> I had just enough room to put it up without any bends or turns. The
> apex is up at about 37 feet and the ends up at 10 feet. I had enough
> COAX to make only a 3 turns choke with adding extra COAX and so far I
> have had no RF. I can tune allbands with my LDG tuner except 15
> meters. I do not need a tuner on the 40 meter band and I didn't try
> 60 meters as I couldn't remember the frequencies. The highest SWR is
> on 75 meters and I would like to bring it down some if possible. On
> 75 meters the SWR is 6.0 and the other bands run from 2.0 to just over
> 3.0.The low end of 75 meters is about
> 3.5 SWR.I do not want to make any quick changes as I suspect making
> any changes may change the other bands also. Band reception has not
> been very good but as best I can tell the antenna seems to receive
> well. It sure is nice to get most of the bands with a single dipole
> antenna. I will appreciate any suggestions for improvement and
> especially bringing down the SWR on 75 meters. Thanks much,
>
>
>
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