See comments below
From: Pete Smith [mailto:firstname.lastname@example.org]
Sent: Tuesday, January 01, 2002 12:08 PM
To: Stephanie WX3K
Subject: RE: [TowerTalk] Half slopers using a tower
Stephanie, for whatever it's worth, I think the best advice you have gotten
so far was W8JI's suggestion that you erect an inverted L instead. The
tuning of a half-sloper is just too flakey, plus you get the advantage of
having the feedpoint at ground level rather than 60 feet up.
>>>>>>Oh but the view off the top of my tower is wonderful. What ham would
not want to have such a tower side view ;-) Perhaps at some point, I will
experiment with this<<<<<<<<
If you make
the total length on the order of 170 feet, and use a series variable
capacitor at the feedpoint, you can dial it right in at ~ 50 ohms. Of
course, for really good performance you'll need radials, but they can be
laid right down on the ground surface (or even just under the surface)
where the grass will quickly make them invisible and unnoticeable.
>>>>>>Pete...Are you offering to come over and help me bury 50 quarter wave
ground radials ??? I really need to bury them or the lawnmower will get them
for sure. My ground is very uneven here :-)
I would have done the inverted L here as well, but modeling showed severe
ineraction with my 80-meter array which hangs off the same tower, and
rather than battle that I decided to go the shunt feed route.
73, Pete N4ZR
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