[TowerTalk] Room For Shorty Above TH11

[n4si@pobox.com]

> > > My 40-2 CD is 12 feet above TH-7 and both work great.  Just 
> > > put the cushcraft boom supports downward instead of above 
> > > the boom.  

> > Watch out...W6QHS (now W6NL) says not to do this, even though 
> > he once advocated it. Instead, beef up the boom...

> Why not?  Logically, the supports would seem to work about as well under
> the beam as over.

Because whippy, thin aluminum tubing like Cushcraft uses is far 
stronger under tension (above boom) then compression (below boom). 

73, Rod N4SI
    The DXer formerly known as N9AKE
         (c) 5 November, 1996

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