Wow! I'm with you on that one... I was simply showing that Rohn requires 2 brackets to use the data on their table... And there's a 0.6 derate if not all the elements are round! Sounds like someon
IF you are going to move up to a crank down, tilt-over, give SERIOUS consideration to a til-down aluminum tower. HIGHLY recommend Heights Tilt-Down towers.... no crank down... no cables.... They
You ever actually laid eyes on the ACME Screw system they use? I have. I've disassembled and reassembled one in detail. I've watched it in use, up close. It is as close to bulletproof as one can g
Reasonably priced is all relative.... I use TESSCO and in a pinch Pasternack. Pasternack, in general, has an excellent selection/availability, but is considerably more expensive. I consider Pastern
Key word: overloaded. Any tower can fail if it is overloaded. Any tower may fail if it is forced to perform outside its specified engineering limits. 72 feet is 12 feet more than my tower and I have
If they were broken, the the previous owners were morons that did something REALLY stupid. Because IF you have the right screw for the right tower, the screw has a LOT of performance margin. You DO
Simple answer... you can't. There is an Appendix in R56 that details how you measure your system to insure you meet whatever standard you set for yourself. It would appear that the equipment for the
Mmmmm.... the speed of light is REALLY REALLY REALLY fast... The speed of current through big copper is still REALLY fast... 50 feet? Nah.... Rise time and duration for WHICH part of the strike e
Reply inline.... On 11/3/2017 2:21 PM, jimlux wrote: the speed is slower than you think.. one way is to think of it as a wire immersed in a dielectric, for which the speed will be sqrt(epsilon).. if
Link es no bueno.... no worky! Could you check it? <smile> 73, Clay, KY5G www.electricalpartmanuals.com/pdf/miscellaneous/Biddle%20Instruments/.../25TA.pdf _________________________________________
Again.... Times makes 3 part numbers that are solid copper, prfe dielectric, no steel.... Sent from my Verizon, Samsung Galaxy smartphone -- Original message --From: Jim Thomson <jim.thom@telus.net>
I'd rengineer it to use a quality stainless sheave with a proper bearing, et al. Start with the size/type of line/load required and work out. Search for and contact marine supply places, et al. -- Or
Excellent suggestion.... consider a proper bronxe bushind with matching shaft/fastener, and if there's enough material, consider machining for an actual bearing.... altgough likely not enough. I'm
This is what I'm talking about. Properly sized for max load plus 50% at least. Less friction and will last a long time. Sent from my Verizon, Samsung Galaxy smartphone It is amazing how much lower
My tower actually calls for a cylindrical hole... The hole should be engineered to support the load. Mine is 4 foot diameter x 8 foot deep. Depth is generally more important than area beyond footpri
Is the entire PVC run still clean and more importantly, dry? Do you just want to replace the coax or both the coax and 14-2? Where are you? City/State. In city or out in county? For a run that long
Here, here, Jim. I, too, am raising my 65' Heights tilt-over tower on a residential lot. Granted my setup is mostly aluminum and much lighter, AND I have all the engineering designs/math for the fou
My FULL R56 manual has a 09/05/2005 date on it. If someone has a link a newer version, please post it up. 73, ______________________ Clay Autery, KY5G (318) 518-1389 There is a new version of the Mot
Variations on a theme, I know, but if you want to avoid having to re-shoot a line into a tree OR hiring a tree climber pretty much ever again... at least minimize the chances, you might want to consi
"snip" Type it into the Start--> Run field.... ______________________ Clay Autery, KY5G (318) 518-1389 Bill KH7XS _______________________________________________ _____________________________________