"When all else fails read the instructions." (ask me how I know this :-) 73 - Mark N5OT 73, de KN4KL ed I concur with Grant, I connect the boom truss on my homebrew Yagi's about 2/3 out. This is app
Hey youall, I want to model Rohn 25G as a transmitting antenna. Has anyone learned how to do that fairly accurately in K6STI's AO program? In addition to some length of regular straight sections, my
Hey Byron, Two thoughts. 1. Full-wave loops sure do play, and making them work on 80 meters is not hard. Put one up and see what happens. 2. If it was me and I had a 130 foot tower, I'd be trying to
I hope to make a trap vertical that works on 80 and 160. I hope to find an 80 meter trap design that can handle full power. The 80 meter energy would stop when it gets to the trap, but the trap wou
Dave has read my mind. I'll mount the trap at the top of the tower, and above that will be something like a 10 foot stinger (insulated from the tower of course - probably the middle of a deceased 40
Thanks Joe, this was just what I was looking for. I knew someone must have done this before. I've slept since I last read about the Battle Creek Special. Legendary skyhook. 73 - Mark N5OT I think
Thanks Dave. My old 40 meter elements all have big fiberglass rod insulators, so that is what will insulate the stinger. We're on the right track. I appreciate all the detail in your email. K6STI a
Roger on all. It is very hard to keep me off the air. I know almost all the tricks. But sooner or later I have to put up something more on the permanent side, where I feel like additional improvemen
Thanks Joe, I was thinking about this but I had the models constantly blow up. However, I was attempting to connect the wires together at the top, which may have interfered with the "fatness" of the
Thanks Jim. I was hoping someone had done this the easy way - Dave says "8.5 inches should work" and I'm getting predictable and usable results at the moment using 10 inches. Mostly I'm trying to ge
Well THAT is just way too much fun. I might have to give it a try! Been a fan of W7ZOI since I was a teenager. Back in the 1970s it was "a QRP transmitter and an RF resistance bridge." I'm guessin
Gawd I got so educated over the weekend. That was great. I put up 50 feet of tower, a 12 foot mast, and two 70' long top load wires. Tuned out the SWR at the shack with a matching network. Station
Hi - quick reality check needed: I am about to hook up a T2X control box to control a HAM-M (or Ham-III or whatever). I'm thinking this is no problem, right? Also, what is the value of that capacitor
Dave, Is there an optimal element spacing for this design? I'd run it through the computer except that computer's at home and I'm not. 73 - Mark N5OT If you want to make a 3 or 2 element array be bi
what am I missing If I had to guess, you are thinking like you will must attach your lifting rope to one end of the mast, and therefore you need a gin pole that is longer than your mast. But I am on
If you want to know what direction your beams are pointed, true north is the answer. "Magnetic north" doesn't affect the direction to point your antennas if your goals is to point them directly at t
Back in the 1990s I acquired 15 torque bars marked "KC797". They either came with Rohn 55 Guy Brackets or Rohn 45 Guy Brackets - don't remember which. Does this sound familiar to anyone? 73 - Mark N5
Thanks Jon. I still haven't figured these out so I posted some pictures here: http://n5ot.com/torquebars/ I included a stock photo of a Rohn TB55 torque bar for comparison. I don't know if mine are a
Great presentation. Thanks! See you in the CQP tomorrow. Mark N5OT On 10/4/2023 6:27 PM, Jim Brown wrote: On 10/4/2023 1:32 PM, Kurt Cathcart, KR2C wrote: I have a bunch of military mast that I'm con