Hi Don, If you can possibly arrange it, run at least two opposing paths for the lightning current to follow away from your rooftop system. These two (four would be good too) paths should be equalized
Howdy, A local ham (N7DD) has acquired a used tower in very good condition except for the state of the documentation. The tower is a tri-ex TM5100RC. Does anyone have or know the whereabouts of useab
Hi Harv, Thanks for the reply. Yes, we tried the Tri-Ex site. It contains _NO_ information on their old amateur product line. In fact, it also contains _NO_ useful information on any of their product
Hi Don, A lot of whether this is going to be problematic or not depends on the exact configuration details of your house construction, details about the antennas and their orientation(s), and how you
I don't know how useful this will be for you. But here is how I'm configuring a single tower HF antenna system for 40 through 10 meters. I live on a 192 foot AARZT hilltop with broad, relatively flat
Hi Phil, I don't know what the manual says about the mounting height yet. I don't have it yet. In fact, it may end up being a home brew model. But the Tennadyne T12 is looking pretty good right now.
Hi Rush, If you are connecting copper to copper, you don't need to worry about galvanic action on the joint. But if it is a clamped above grade joint, you may want to use a silicone grease based comp
Hi Doc, Exothermic reaction (or Cadweld) welding is definitely the superior way to make the connection. Particularly if there are many connections to make. If the connections in question will untimat
Hi Bill, I'm not a mig welding expert. But I'd guess that if you can get feed wire that is of the appropriate material, it should do fine. How about it mig experts??? I know there are some flux fille
-- Start of forwarded message -- Have Stackmaster control boxes, the ones with the push buttons, and Stackmatches. The circuit board for the Stackmatch has a terminal labeled "N" that is supposed to
All, I appologize if this has appeared before. But I can't see it getting through the reflector here. We had network problems at the time I first tried to send it. So i'm unconvinced that it is getti
Hi Greg, I'm unfamiliar with this particular antenna. But in general when making adjustments to a store bought Yagi, set the parasitic element dimensions to manufacturer's recommendations. Beyond ver
Hi Bill, Check with your local building codes. If they were written by a competent agency, they will not permit guying to a chimney. If the codes permit it, don't do it anyhow. The preload you are ta
Hi Dave, I get up to Elko occasionally to visit one of our customer's mines. Nice country. To: <towertalk@contesting.com> This should _NOT_ be the case if the right type of NOALOX was used in the fir
Hi Eric, Go to: http://www.imsisoft.com/ and download their V5 version of the basic "TurboCad" program. I have been using the V3.01 for a few years now and it is a very useful tool. I paid $29 for th
Hi TTians, I read with interest the recent discussion on Ward Silver and Steve Morris's tribander comparison test. I was motivated to do some modeling to check out one of the arguments that was propo
Hi TTians, Recently, there was a spate of discussion on the TowerTalk reflector about the test methodology used in the triband HF antenna comparison done by Ward Silver (N0AX) and Steve Morris (K7LXC
Hi Y'all, (long boring antenna discussion - you should probably stop reading now) I finally got to read the second edition of the tribander comparison report. It is very interesting. Anyone wishing t
I posted this a few days back. But I don't remember seeing it on the reflector. I didn't get a delivery falure message either... Anyhow, here goes again. -- Start of forwarded message -- Return-Path:
To: <towertalk@contesting.com> Actually, the effective cross section for Rohn 45G is 3 square feet per section. But the sections near the ground don't get as much wind as the upper ones. So 2 feet p