[UK-CONTEST] Stub mast

[Bob Henderson]

John

My tower has been grossly overloaded for a decade or more.  Currently my 
P80HD supports a C31XR about 1m above the head unit and an XM240 about 5m 
above that. Two metres above that is my 5 ele 6m yagi.

The trick is to use a Chrome-moly steel stub-mast.  Mine is 2 inches 
diameter with 5/16 wall.  It's very heavy but very strong.  I bought it from 
a steel tubing supplier somewhere near Nottingham but it's so long ago I 
can't remember their name.  Look for a high pressure pipe supplier.

Cheers.

Bob, 5B4AGN


----- Original Message ----- 
From: "John Muzyka" <g4rcg at yahoo.co.uk>
To: <uk-contest at contesting.com>
Sent: Monday, November 20, 2006 2:06 PM
Subject: [UK-CONTEST] Stub mast


> Not in the present threads but a question which I am sure will get me a 
> few replies,
>  What do most people use on here for stub masts that come out of the 
> rotator to carry the antennas ????
>  I use 2" (which is not 2" at all) steel scaffold pole about 5' then put 
> one of those tubing sleeves (with a load of nut and bolts on each side, I 
> have these strengthed by welding a metal strip both sides top to bottom) 
> the put in 2" (which is not 2") Aluminium scaffold pole about 10' to then 
> mount my other warc beam above the 2 element 40/30m beam (with a 2/70 
> co-linear on the top)
>  With the wx getting more and more stormy as the years go on I want to 
> make sure I dont get another stub bending or snapping (I have one bend the 
> steel pipe in two about 2 years ago)
>  So what do other people use ???
>  Cheers
>  John G4RCG
>
>
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