Hi Bob
I entirely agree with Jerry K0CQ.
I used verticals for a long time. I even have 80 radials buried in
the back yard, but the 40m inverted V dipole fed with ladderline leaves the
verticals for dead.
I use ladderline almost to the shack, then I have a 4:1 ladderline-to-coax
balun and then a few feet of RG-8 to an ATU. It works on all bands, except
160, and its not too hot on 80m, although I worked VK several times. Get the
biggest ATU you can - mine is an L-match. Some of the small ones seem
under-engineered and you may want to run higher power some day.
I just worked the A50CDX DX-pedition to Bhutan this evening, on 30m and again on
40m CW with my Elecraft K2 running all of 10 watts. Even if it turns out to be a
pirate, I still cracked a big European pile-up. Inverted V antennas and
ladderline work just fine. And I did not need to switch on the Omni-V/Hercules
II ! The K2 and inverted V has now accounted for way over 100 countries.
73 John G3JAG
On 01-Sep-2000 Dr. Gerald N. Johnson, electrical engineer wrote:
>
> With a 7.5 meter ground wire you have a vertical effectively 15 meters
> tall fed away from the bottom, quarter wave resonant at 5 MHz. It NEEDS
> those radials. You would be better off with any center fed wire fed with
> tuned feeders. Make the flat top (or inverted V) whatever fits between
> the available supports, use ladder line for a feeder and a balanced
> tuner. It can work more bands than any other antenna, limited mostly by
> the tuner (unless its really short) and doesn't have that ground wire
> length problem.
>
> 73, Jerry, K0CQ
>
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E-Mail: John G3JAG <patents@dx0man.prestel.co.uk>
To: <tentec@contesting.com>
Date: 02-Sep-2000
Time: 22:39:23
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