|[AMRadio] Valiant and Loop progress|
w5omr at satx.rr.com
Tue Dec 6 12:48:58 EST 2005
Anthony W. DePrato wrote:
>> Old age is a bummer. i forgot to add that i get reducers for the
>> conduit pipe so that they will fit together. I end up with around
>> $100.00 bucks in a 60 foldover mast. you can also put a small yagi
>> for vhf on top if you want.. i have also installed 108 in whips for
>> a top hat and since the mast is not gounded installed a loading coil
>> at the base and used as a vertical on 80 and 160. but then you get
>> into putting out a good radial system. bottom line is you have a
>> little of both worlds.. dipoles that you can change for the ground
>> with the pulleys and a 60 ft vertical. .
My next suggestion was going to be the 2x4 mast.
I'm thinking that in order to get near 60', Brett might have to use (4)
Start with a single 2x4 in the ground, then have it be the center board
between a pair of 2x's, with all three bolted togther, and another
single 2x at the top. 1 foo or so in the ground, 6' per connection, the
total height would be around 58'... high enough for 75m.
After the boards were layed out, and drilled, I, personally, would coat
the thing in 2 coats of wood sealant/primer, and two coats of
weatherproof, exterior house paint to protect the wood from the elements
for as long as possible.
The other alternative is to get a few joints of EMT. They come with one
end threaded and are joinable, end-to-end. Drill a hole at the top, add
a couple of pulleys, yank up them antennae!
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