I am building a 40 meter 4-square. I have decided to build it with aluminum from Texas Towers. The bottom section will be 1.625 and reduce 1/8 per section above that with the top peice being .875. Ho
FOR ME I would step down the overlaps as you went yup - start with a longer overlap say 1 foot and decrease it by and inch or two with each downsizing... The cumulative mechanical needs of the tubing
Some other things to consider... How are you attaching the tubes to each other? Welding? Epoxy? Bolts through? The stress distributes differently in each case. How much bending can you tolerate? You
I plan to use #10 self drill stainless steel screws. I have a friend with a drill press who is going to help with that. I plan on 1 set of dacron guys.. I have a gap challenger vertical about the sam
Not sure where you are located but have you considered a rebuilt Rohn push-up pole? They come with guy eyelets on floating rings and are pretty rugged and reaonably priced. There is a company here in
Hello Gordon, Why not use chain link fence top rail instead? It comes in several different sizes, is cheap, galvanized, comes in 21' lengths (1 1/2 pieces do the job) and they are swaged on one end.
dealer. any Weather Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any questions and ask for Sherman, W2FLA. _______________________________________________ See: http://www.mscomputer
Hi Jim, I really doubt the extra resistance makes much difference. A lot of hams use steel tower sections for verticals...they work well. Check out this link: http://www.qsl.net/k9ns/outk9ns4.html Bo
Copper pipe at the hardware stores is fairly inexpensive and it's been said to be a pretty good conductor...hi 73, Tom K5IID At 06:15 11/08/03, Gary K9GS wrote: Hi Jim, I really doubt the extra resis
Hi Gary, I have already purchased the aluminum. It is light weight and easy to work with.. I'll take a look at the top rails next time I'm in Home Depot. I'm there almost every weekend. Gordon N4LR d
As I recall, I used 6 inch overlap for my 40m 4-square. Sections connect with cross cuts and hose clamps. Started with 2" diameter at the bottom. Completely self-supporting - no guys needed. I used 6
I started with 1 1/4" od and stepped down from there on my 40m 4 square. The feed point is 10 feet above the ground with elevated radials and each element is guyed 3 ways at the middle. Lots of room
How many buried radials did you use? They sure work well on my 4-square -- 60 radials per element, which is about the minimum you should use. _______________________________________________ See: http
Gordon, One of the "rules-of-thumb" used with tubing is to overlap 2-3 times the diameter of the element. Therefore, 5" is great on 1.625" tubing while only about 2-1/2" is needed on the .875" diamet