Hi Jim,
I use exactly that here in Tampa. My antenna is a stealth 43' of green 18
gauge wire up a tree and 43' of the same horizontal hidden in the bushes. I
am in an apartment. The feed point is about 10' above ground. I feed it with
open wire line from a 4:1 balun on the back of my K3 with the internal
tuner. I am guessing the feed line is about 25'. It matches on 80-6 ...
sometimes ... excessive rain causes a "HIGH CURRENT" on the radio and I just
back down the power until it goes off.
I did tinker with different lengths of coax between the balun and the radio
... 10 feet of RG58 and the best SWR on 20 was 2:1 and 6 meters would have
nothing to do with it. I have not experimented with the length of the open
wire line ... the set up seems to work fine as I currently have it.
43' is a popular height because it is 5/8 on 20 and can provide "3db" gain.
For me the antenna works very well on 40, 30, 20 and 17. It is very poor on
80 and the angle of radiation is a bit high on 15-10. I have worked locals
on 6 (use a 6 m delta loop in attic the rest of the time). On 160 the tuner
would have nothing to do with it. BUT on 160 during the Stew Perry I did add
a base loading coil and hid 1/4 radial in the bushes and worked up and down
the East coast plus VEs and Carribian.
My current goal is DXCC on RTTY and only confirmed on LOTW. With this set-up
and I am up to 65 countries with only 100 watts.
Hope this helps.
73, Mike WA5POK/4 Tampa
--------------------------------------------------
From: "Jim Brown" <[email protected]>
Sent: Monday, September 02, 2013 7:10 PM
To: "Reflector Elecraft" <[email protected]>
Subject: [Elecraft] 43 Ft Vertical and Elecraft Tuners
43 ft verticals have become a popular antenna, and while they have some
strong points, they present a very high SWR on most bands, so they require
a serious tuner to get them to load.
I'd like to know of any stations using a 43 Ft vertical as a multi-band
antenna using nothing but an Elecraft antenna tuner for matching -- that
is, no "baluns", transformers, loading coils, or additional matching
networks. I'd like to know the bands on which you are able to match it
well enough to get full power from the rig (or the power amp). I'd like to
know if the tuner is located at the base of the antenna, or, if in the
shack, the length of feedline between antenna and tuner.
Thanks and 73, Jim K9YC
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