[TowerTalk] 80m 4-square materials
n8jv at comcast.net
Sat Dec 16 16:03:35 EST 2006
The way I do my 4 sq for 80 mtrs is I have a 132 ft vertical
made out of
100 ft of rohn 25 and 32 ft of Alum mast and some smaller alum tubing. I have
3 guy levels with Philly an the tower sits on 3 max-gain nylon
insulators. From the
top of this tower I have 4 nylon ropes going to guy points every 90
deg. From these
ropes I suspend 4 - 66 ft pieces of #10 copper wire spaced for my 66
ft square. I
then buried abt 5 miles of radial wire to make the radial system for my 80 mtr
4-sq and my full size 160 mtr vertical. The entire system works quite well.
If I did this again, I would put up a 200 ft tower with no
insulators and I would
suspend wire 4-squares for both 80 & 160 from this support. And I
would also put
a rotor and 40 mtr beam on the top of the 200 ft tower.
At 10:56 AM 12-16-2006, you wrote:
>I am trying to decide what to use to build 4 new 80m verticals for a
>4-square upgrade here. My criteria are:
>1. full size 1/4 wave verticals, no top or base loading.
>2. must be able to standup to new England winters at 2000' with ice and wind
>3. must be new material, I don't want to go scrounging for used tower or
>4. prefer only 1 guy level, but will do 2 if necessary.
>5. prefer to stand up complete, but will climb to add top section(s) if
>necessary, crane or truck access will be very hard to this spot.
>6. prefer something that can be delivered to here, truck delivery is not a
>problem, I don't want to have to haul long stuff myself.
>So, what might fit those criteria??
>David Robbins K1TTT
>e-mail: mailto:k1ttt at arrl.net
>AR-Cluster node: 145.69MHz or telnet://dxc.k1ttt.net
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