> I am looking to purchase a 3" diameter mast, preferably chrome moly. I
purchased a 2 7/8 CM mast years ago from K5RC however he no longer sells
them. This has worked well for me except 3" diameter would have been a
better fit for my rotator and antenna clamps. Since I do not see anyone
selling 3" masts, I guess I will have to purchase the material and
galvanize it. What are the specs that I should look for when ordering
chrome moly tubing. 1020 DOM may also be an option. Are there any
recommended suppliers for either of these materials?
It's not too difficult. Check your local yellow pages for a Steel
Supplier.
It's been my experience that only a very few installations actually
need chromoly. An SAE 1026 or A530 are both in the 60kpsi yield strength
range and will suffice for 80% of installations. Have you run the numbers? The
Mast, Antenna and Rotator Calculator (MARC) program is available from
Champion Radio Products for only ten bucks.
As far as galvanizing, my local steel supplier (EMJ) will deliver the
steel to the galvanizers and I just pick it up from them when it's done. Do
a search and see if you have a local galvanizer.
Other coatings will work too - even latex house paint. Be careful with
any coating as it may be thick enough that it won't fit thru the TB.
Cheers & GL,
Steve K7LXC
TOWER TECH
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
|