[TowerTalk] Crankup Tubular Tower Info

[Joe Giacobello]

Mike, I owned a TT-45 several years back.  If my memory serves, the 
tower was in three sections.  The topmost section was locked into the 
2nd section with a bolt or similar.  I think the second section slid on 
a track (sort of tongue and groove arrangement) on it and the bottom 
section.  I believe the 2nd section was male and the bottom was female, 
but my memory is vague on this.  The raising cable went up the outside 
of the bottom section and somehow fit between the inside of the bottom 
section and the outside of the 2nd section and was attached to the 
bottom of the 2nd section somehow.

That's all I can remember.  It seemed to work reasonably well.  Maybe 
someone else has a better recollection.

73, Joe

Mike Newman wrote:

>Hi
>
>I'm looking for info on the Wilson and other tubular crank-ups.
>
>We don't get to see this make of mast here in ZL, but since I have some lengths of heavy wall steel pipe, I would like to build something like the Wilson crank-up.
>
>Can someone tell me what the tower comprises, and how it is assembled?
>
>Are the nesting tubular sections all circular or are some square in section?
>
>How is rotation of one section within the other prevented - ie  is there a keyway or similar.
>
>Thanks de MikeN,    ZL1BNB
>
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