If you have another support at the proper orientation, you have the height... and a Half Square towards EU will be even better... de N3AC _______________________________________________ _____________
yep use #10 _______________________________________________ _______________________________________________ TowerTalk mailing list TowerTalk@contesting.com http://lists.contesting.com/mailman/listinf
I'd be tempted to try the mil aluminum in roughly 40" lengths which were used to hold up camp. Cheap. _______________________________________________ _______________________________________________ T
Dick With your plan, you'll have a lot of shear across your insulators when letting down the antenna/tower. Since it's so light of an assembly, here's another idea: mount something like 2 ea 6x6's on
shunt or Omega... 1 cap or two... no inductor. Doesnt work for phased arrays unless your other elements are passive _______________________________________________ ___________________________________
No need to duplicate... check ON4UN/5th. He has a model of the Collins coupler included that Roy W7EL made up for EZNEC, I think. Dan AC6LA may have something for it for AutoEZ also. regards, Dave N3
You'll always have sag... less sag, with more tension... Here is a calculator, with both ends at the same elevation. Using 1/2" Phillystran for a 350' span, you have something like 23' of sag with a
40 OCFD: What most of the comments you've received probably (or should) mean is that you don't have a symmetrical/center-fed antenna, so you're more likely to have feed problems and common-mode probl
Check his revision history and you should find it. He documents things well. regards, Dave N3AC _______________________________________________ _______________________________________________ TowerTa
Jim, I looked also... you sent updates thru 5.0. His site says that updates for Pro are on a URL that's with your CD (I think that's what he said...) anyway, I didn't find the URL for updates to Pro.
If you've got galvanic corrosion, you guys are correct. That takes a dissimilar metal pair, or 3 if you add a sacrificial anode, and an electrolyte. Read that last part again. Without your electrolyt
Actually, painting your anodic material is the LAST thing you want to do if you have a big galvanic potential between 2 metals and an electrolyte (i.e. galvanic cell). When you have a coating defect,
A stiff steel or wood (it's lighter) shank is essential. If you always have your arch on a rung, partial- or 3/4 shanks are ok. I have full-length wood shanks (left over from previous hobbies), and c
Tom, Ok, those lengths are just the cut-lengths for the tips ONLY. So... it might not be too bad. Here's what I did using a NEC 2 engine and AutoEZ: For each side: 16mm: 1200mm exposed (well, that in
What about Llewellyn's model of the hybrid coupler in on4un/5th? 73, Dave N3AC _______________________________________________ _______________________________________________ TowerTalk mailing list T
25G tower with whip on top: Why series-feed this thing if you don't have to? Stick the tower up and guy it with Philly, or with steel cable with insulators near the tower. Then shunt-feed it. Nice an
40 Moxon questions: For you guys who have built a 40 Moxon - did you just follow the recipe, like what's posted on K3LR's page, or actually model it also? Did you model with AO, or NEC-2, or NEC-4, o
Tony, that was element length... probably tip-to-tip. After my comment, I saw Greg Ordy's article that I need to re-read about checking optimum Moxon design, on K3LR's page. It turns out my antenna i
Weaker than steel piping? Naah... not really. I've specified and used lots of very strong steel pipe in the chemical and petro industries; it's very strong. What specs are you talking about for the p
If you are talking full design wind speed, you will often need 3 sizes larger of Rohn tower at 50' if cantilevered and no guys. And a significant foundation. regards, Dave N3AC ______________________