Hi Carl, I'm sure not the guy to say what might work for you. I know nothing about the TH5, or the balun you have. Hopefully, you'll get some info/ideas from others that will guide you towards what y
Yikes David! Tough request! Comments interspersed. < Hi and thanks for taking the time to read this. < The winter storms we have been getting here over the past few years seem <to be getting stronger
SNIP Roy, At the Polyphaser seminar I attended a few years ago, it was explained that the "cone of protetction" is not really a cone. For a strike of average strength, the strike leader operates on a
Hi, I have revised the discussion for the "Guyed Tower Study" on my website (URL below). The data is unchanged. Hopefully, the changes will make some things easier to follow. A few minor changes were
SNIP Hi, Well, I'm sure I don't know the answers to the questions posed, but here's some input. First, I suspect the areas of some of the antennas, used to produce Steve's numbers may be incorrect or
Hi Dick, I know we've discussed this privately in the past. I think you are pretty close with what you have done. If the pretension doesn't allow any mast movement when you tweak a guy, the thing is
Snip.... Hi Stan & any interested TT readers, Yep, it is quite a mess indeed! This is a replay of a previous discussion. Those that were around last time may want to move on to the next post. This is
Hi Stan, Wow, almost got a headache! Here's my view... Trying to match low numbers with low numbers and high with high doesn't work. The area information needs to be accompanied by the knowledge of t
Hi Tom, Nice to meet you in Dayton. I'd look for Delrin! It's one of the many nylon alloys. We use it extensively where plastic is required on our marine spars. The black pigmented grade has good UV
Hi Brian, ASTM A 475 lists 3/8 EHS at 15400 Lb min breaking strength. So if you are trying to get a strength equivalent look for HPTG 15400 Phillystran. They also make 20800, 27000, 35000, 42400, 583
Hi Steve and John, Greetings to All, Sorry to be slow in responding, too many balls in the air around here! Just put in a 36 hr workday. Good contest training! The America's Cup yacht race is a "Once
Sigh, I can't let all of this go by without comment, Drats! Since, we eat the elephant one bite at a time: A 30'8" Long x 1.5" dia x .065 wall boom, with EIA-RS222 C wind loads, is safe with 85 Mph s
Hi Henry, First, what specification would you like to use as the foundation for your calculations. There are at least 2 popular ones in the U.S.(EIA & UBC), and they are not identical. You would do y
This is long and only suited for those interested in the discussion of making sense out of the exercise of trying to match antenna and tower specifications. Others wrote about bracketed towers, etc:
Hi All, I have added many graphic images to my website. Of particular interest to many on the reflector will be the tower deflection images for several load cases in the Guyed Tower Study. This shoul
This is good advice! What "everyone is doing" is the better choice of the available solutions. We may whine about the fact that the Rohn rotor plates only fit at one of two places in the top section.
A good way to avoid having to figure out how to solve the problem! I think more towers that are taller with more rotors would also be better! Everyone gets to decide which configuration is best for t
Somehow, this response didn't make it past the TT filter this morning. Gary, It certainly can be done, but is probably not necessary. Freestanding towers are different from guyed towers. I think you'
Well, now I understand what you are trying to accomplish. I've never seen a side load rating for any of the commercial rotators, so I don't know if you need to make a change and if you do, what chang