If I match at the antenna and choose proper components for the matching network, the amount of power actually transferred to the antenna is more a function of what the real part of its feedpoint impe
I asked this question over a year ago and didn't get any responses, so I'm going to try it again. The trench from my shack to my tower is roughly 180 feet long, and since it was dug with a backhoe it
Hhmmm ... the answers I've received here so far don't necessarily combine to a clear conclusion, possibly because some people think I'm talking about conducted currents from a strike on the tower. I'
Dave, thank you for that excellent and informative reply! I really appreciate you taking the time to write it. 73, Dave AB7E Note, I play the part of an amateur on here, but in real life I write simu
Six months (or less) in the Arizona summer will turn those things to brittle flakes. I'd advise sticking with the NEMA boxes (Carlon or similar). 73, Dave AB7E --Original Mail-- From: "Terry G. Glago
Hi, Pete. I've been using some angle stock I bought at Home Depot for that same purpose. It's steel about 1.5 inches on a side, has both round and oval holes, with some sort of bright plated finish.
That's not how solder joints fail. Solder has a higher resistance than copper so it drops more voltage due to any current through the connection. Ironically, the better the copper conductor, the more
In my opinion, you really need to rethink what you have planned. Just because nobody is going to get killed climbing the tower doesn't mean it isn't going to cause property damage or physical harm wh
You won't find any documentation of that because it doesn't make any sense. Think about it ... wind drag (total surface area) and leverage (height of tower) are considerably more critical than the we
Assuming the base is properly laced with rebar, it seems to me that it might be just as much work to get it out of the hole fractured as intact. Either way, you'd either remove it in one piece or hav
Sounds like a good scheme. I had assumed that the base needed to actually be removed as NA5U originally stated, such as if it was going to be in the way of something else that needed to go in (electr
I agree ... rig an alarm that goes off when the wind speed gets too high, but control the tower yourself. It's not that difficult to design your own alarm, but here's a commercially available system
PowerPoint should work fine. It isn't exact (and neither will anything else be when you take into account antenna elements blowing in the wind), but it would easily be accurate enough for what you wa
Certainly. It works fine for drawing shapes to scale and moving them around on a page. It's only 2-dimensional, of course, but that's not a limitation in this case. 73, Dave AB7E ____________________
Aside from the fundamentally bad idea of turning an expensive mast into Swiss cheeze, have you considered how impractical it would be to drill 3/4 inch holes in a mast while it is up on top of the to
I totally hate websites that are set up for sales but don't show you the price until you start the checkout process. It's a horrible business practice. This doesn't appear to be one of those situatio
Sorry ... Ukraine, not Russia. And Array Solutions also handles the AA-200A in the U.S., plus some other models. http://www.arraysolutions.com/Products/AIMtop.htm#top%20of%20page 73, Dave AB7E ______
Remember those "Chinese handcuffs" we used to put over a finger on each hand that grip when you pull apart? You should be able to make one out of the braid from some RG-8 coax. Slip it over it the en
If there is a Rain for Rent (irrigation supplies) outlet near you (I think they are nationwide), you might give them a try. They handle both 0.050 inch thick and 0.070 inch thick tubing, and the 0.07
There are so many variables influencing the answer to your question that it seems to me your best bet is to download the demo version of EZNEC and learn how to use it. Your first surprise will be tha