I use an 1/8 wavelength top-loaded vertical up a tree with one 1/8 wavelength
elevated radial. I had it tuned dead on at 1830 and it works quite well for
what it is BUT with the rain the last several nights, the ground is wet, tree
is wet, antenna is wet, the 1:1 SWR point moved down about 50 kHz ... turned on
the tuner for the contest. Once things dry out at your QTH do another SWR check
and see how things measure up.
73, Mike WA5POK
(P S - I apologize to anyone hear that called and I didn't hear ... fought an
S7 noise all weekend long. Ugh.)
On Saturday, December 1, 2018 8:54 PM, Leroy Buller <lee.bul...@gmail.com>
wrote:
I think the counterpoise is wonky as many of you have stated.. I have
tested the antenna at the feed point at it is the same that I see in the
shack. There is no resonance with this antenna. Yes, it is cut long too.
When I did have it working it was 1.3 to 1 at 1835.. It is very wet and
rainy here and I think the counterpoise is a mess. I have not done
maintenance on it this year since I was in the hospital in July and
recovering the last four months Yes, it was that way. So, next week, I am
going to put up two elevated radials about 7 feet high and then take off
the radials on the ground...or at least try to clean them up. But, the
rain, wet and cold of Kansas has damped my enthusiasm for fixing it this
weekend., RATS! I like the 160 contest. But it does seem the actual
antenna is OK. The end of the 130 feet has a big insulator on it and it is
about 6 foot from a tree limb. So, it is not touching the tree.
Since I am retired....next week will be sufficient.
Lee
On Sat, Dec 1, 2018 at 11:04 AM Vic Rosenthal <k2vco....@gmail.com> wrote:
> 1. The resonant point seems to be at 1.80 or below.
> 2. The broad response indicates high loss somewhere. If you hadn’t said
> that you changed it, I would suspect water in the coax.
>
> Victor 4X6GP
>
> > On 1 Dec 2018, at 18:54, Leroy Buller <lee.bul...@gmail.com> wrote:
> >
> > There
> > I tried to get on 160 with my Inverted L last night. 60 feet up and the
> > rest over to a tree, 130 feet total. About 20 random length radials in
> the
> > yard. The best I can do with a city lot. This antenna worked last year
> > very well, but now I get this
> >
> > 12/1/2018 10:46:08 AM NOTES:
> >
> > Frequency SWR
> > --------- ---
> > 001800000 1.3
> > 001810000 1.4
> > 001820000 1.4
> > 001830000 1.4
> > 001840000 1.4
> > 001850000 1.5
> > 001860000 1.6
> > 001870000 1.6
> > 001880000 1.5
> > 001890000 1.5
> > 001900000 1.6
> > 001910000 1.6
> > 001920000 1.6
> > 001930000 1.6
> > 001940000 1.6
> > 001950000 1.6
> > 001960000 1.6
> > 001970000 1.7
> > 001980000 1.8
> > 001990000 2.0
> > 002000000 2.1
> >
> > There seems to be NO resonance at all with this antenna. Before, I could
> > operate the bottom of the band but nothing above 1850 without a tuner. I
> > have changed out the coax feeding the antenna which hepl bring signals
> up,
> > but it seems to be a dummy load.
> >
> > Anyone have an idea what is going on? Shucks, I am out of ideas. Unless
> > my ground plane has gone wonky
> >
> > My tuner can't find a match for it either. I have an automatice tuner
> now,
> > but it cannot find a match. Something is wrong here and I am stumped.
> >
> > Any help from the antenna gurus out there?
> >
> > Lee - K0WA
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