My 80m vertical (going up within the month) will be 60' of aluminum
tower with a 4' piece of 2" tubing extending from it.
It will be insulated from the base using three pieces of solid
fiberglas rod which fit inside the tower legs (drain holes drilled).
The feedpoint will be close to 50 ohms due to the 60 radials (20
attached to each tower base leg) and I will use RG-213 (if I have
enough) directly, as I had it configured 20 years ago when I lived 300
miles South of here in Indiana (worked 164 DXCC on 80m the first month
I had it up back then!)
OH, if you decide to use just a wire, I'll buy the 30' of aluminum
tower you have!
Good luck
Don
N8DE
Quoting Eroddy4366 <eroddy4366@aol.com>:
> i have 30ft of aluminium tower that i want to use as a 80m
> vertical.i want to strap on 30ft or so of pipe to get the proper
> height.has anyone any thoughts on the base.i think i want to get a
> sono tube and fill it with concrete.then somehow insulate the
> base.this is where the problems or lack of knowledge start.how is it
> completely insulated.do i use a balun for the base to feed it.i
> have about 80 radials cut and i want to put them on a plate at the
> base.i also want to buy everything i need as i don't have time to
> make the parts,i.e. fedding it etc.can i get a little coil or do i
> just measure the tower and pipe and attach coax.i want to work in
> the dx window only.also will this work any better than a piece of
> copper wire 62ft long with a bunch of radials.all comments will
> help.also sources of parts.thankyou kb1jts
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