[TowerTalk] Reverse Fed Towers
w5prchuck at gmail.com
Wed Dec 16 07:16:27 EST 2015
To avoid RF in the shack, bury the coax/hardline.
On Wed, Dec 16, 2015 at 12:30 AM, Dave Thompson <thompson at mindspring.com>
> Tom N4KG explained reverse feeding a tower in as I recall the May 1994
> Tom does a good job of making it easier and yes, this is an elevated
> radial system. My main concern was not getting the radials far enough off
> the ground
> to avoid ground loss. ON4UN told me the radials needed to be 40 feet off
> the ground to be safe. There was a report by Christman released at Dayton
> in the early 1980's where he built a half wave vertical dipole that
> required isolators to be effective. K4PI looked at the design and told me
> it was too complicated.
> I built one using Spi-Ro short radials and using the MFJ 259 found that my
> 71 foot tower top loaded was matched at 1830 at 18 feet. A couple of
> others used the design to make effective 160 or 80 meter verticals.
> Dave K4JRB
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