[TowerTalk] Verticals of Telescoping Aluminum

[K7GCO@aol.com]

In a message dated 9/9/00 9:09:33 PM Pacific Daylight Time, 
k1xx@rindge.nh.ultranet.com writes:

<< 
 I've used 3" OD irrigation tubing as booms for years.  To splice, I use
 a length of "EMT" conduit purchased from an electrical supply house.  I
 don't remember the exact size (2 something inches), but it is a
 reasonably good internal fit.  It's not as snug as 1/8" increment tubing
 sections, but pretty good.
 
 73 Charlie, k1xx
  >>
For center beefing up of a 3" irrigation tubing boom, there is an aluminum 
pipe of some kind I've found at surplus places that telescopes inside nicely 
and is about 1/4" wall--perfect.  It's heavier than needed for splicies.  If 
it's in surplus it is the industrial supply houses for may sizes--take your 
calipers.  k7gco

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