Hello Wich type of mast do you use when you have 2 big yagi´s on the same mast, maybe 10 ft of separation? Mine 0.125 inch wall mast bend a little with strong winds 73, Jorge CX6VM/CW5W _____________
Search the archives, someone has a mast strength calculator that should tell you exactly. My feeling would be a 1/4" wall high strength steel alloy. David Robbins K1TTT e-mail: mailto:k1ttt@arrl.net
Jorge, Depends how big your 'big yagis' are, what wind speed you'd like the mast to survive. You have to do some calculations. For your existing mast, the tricky part can be to identify what material
Jorge, I have no idea of what the availability of this type of mast would be to you. I have been using it here in Florida (and also at my station in Virginia when I lived outside the D.C. area in the
This is 4130 chrome molly steel tubing. The word tubing is the primary descriptor I think, in that there is no seam such as you might find when using some kind of pipe. I bought a half dozen or so 2
I'm not a metallurgist either. I might have been sold chain link fence railings, but whatever it was I dragged up 160ft in the air, it work pretty well. I just googled 4130 and found the text below.
On 12/27/12 10:51 AM, Mike Ryan wrote: I'm not a metallurgist either. I might have been sold chain link fence railings, but whatever it was I dragged up 160ft in the air, it work pretty well. I just
Here's a handy online mast calculator: http://www.math.niu.edu/KARC/mast/ Happy New Year to all you Towertalkians! Dave Hachadorian, K6LL Yuma, Arizona _______________________________________________
Here is a link to the free mast calculator. http://www.dxzone.com/cgi-bin/dir/jump2.cgi?ID=17127 If you do not have Microsoft Office it will run on the free Open Office software. There is also a link
Hi Jorge, It's easier to stick to a 2" OD. I went with 2" OD but with a 3/8" wall 4130 chromoly. The cost difference between 1/4" and 3/8" is not significant. I want to make sure the mast outlasts