[Boatanchors] Off Topic Post -- Antenna Mast

[manualman@juno.com]

Hey Mark:
My fingers are bigger than your 1/4 inch mast. Is this a scaled down A3?
Why don't you go to a plumbing shop and get some schedule 40 pipe (mast)
material? They have it in a number of diameters.
Pete, wa2cwa        

On Fri, 17 Oct 2003 19:49:26 -0400 "Mark Bell" <bell@blazenet.net>
writes:
> I'm putting up a 60 foot Rohn 25G tower with the tapered top section. 
>  The
> top section accepts a 1/4 inch mast.  The rotor place is at the 
> bottom of
> the top section, and will not fit anywhere else on it.  Masts come 
> in 10
> foot sections, so about 1 foot or so will be above the tower top.   
> My
> antenna is a Cushcraft  A3 (3 elements).
> 
> The mast was not there when I went to get it this morning.  
> Grrrr.....
> (and the work party is coming tomorrow morning).     My next choice 
> was
> rigid conduit, but that's hard to come by in 10 foot sections.   I 
> was able
> to get EMT conduit.    Has anyone used EMT conduit?   Since I'm 
> planning on
> putting the beam only about 3 to 6 inches above the tower top,  I've 
> half
> concinced myself that the EMT conduit will work.   I certainly 
> wouldn't want
> to use EMT for a seven element beam up say feet above the tower 
> because of
> the bending moment.
> 
> Any comments ?
> 
> Mark K3ZX
> 
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P. A. Markavage
ManualMan, now has available laminated credit card style "Quick Reference
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