Gives me the creeps just thinking about it. _______________________________________________ _______________________________________________ TowerTalk mailing list TowerTalk@contesting.com http://list
That was a hundred years ago. Today's leftist press never prints anything that is true. 73, Jim K9YC _______________________________________________ _______________________________________________ T
I was in my garage looking for a jug of chemical that I needed to spray with my garden sprayer when I heard a hissing sound. I looked at the sprayer and thought huh, why is it leaking, I haven't pum
It doesn't sound to me like the mounting plate would have a high enough shunt capacitance or loss resistance to bring about the effects you are seeing. Nevertheless, if you wanted to eliminate the po
Before you shortchange yourself, take a look at Dan's website (ac6la.com) and see some of his work and perhaps consider adding his excellent AutoEZ adjunct to EZNEC and do your own modeling. That sai
Not seeing my messages. _______________________________________________ _______________________________________________ TowerTalk mailing list TowerTalk@contesting.com http://lists.contesting.com/mai
I had a vertical for 40-meters using a Cushcraft AV-80 for aluminum stock. This had a fiberglass rod at the bottom for an insulator, a heavy wall bottom section and several sections of 2" OD aluminu
You don't say how they are to be switched but as a general case, I would make them all the same length. Because of the different heights and depending on what the connection arrangement is, each Yagi
Quarter wavelength lines have the magical property that the output current is equal to the input voltage divided by the line Zo. So with multiple inputs tied together, and obviously having the same
Another point or two and then I'll shut up. 1) The expected phase shift in a line is only achieved when the line is matched. 2) When I was doing EME I, and everyone else I knew of, used equal lengt
I probably should have been a little more specific; there are some special case exceptions. Roy Lewallen says on page 6-15 in my 22nd Edition of the ARRL Antenna Book: "The only cases in which the cu
I have a little OB7-3 that I bought never assembled, still in the box, from a contester friend who was going to use it for a "multiplier" antenna. He changed his mind and sold it to me for half what
On my QRZ page https://www.qrz.com/db/N7WS when referring to adding more radials under my Inverted-L I mention using care since every bit of vegetation on my property has thorns or burrs as can be se
I been reading this thread with interest and for no particular reason I'll jump in here. I've been modeling antennas since the ELNEC days. (I used Touchstone running under DOS for circuit analysis fo
Check out coupled resonators. I have a full size 40 meter rotatable dipole which I plan to install at 105 feet. I want to put 30 meters on the same mast if possible. I had considered two options but
If your open wire is short, why bother? Replace it with low loss coax, put a decent common-mode choke at the feedpoint and tune it. Sometimes the effort to use open wire simply isn't worth it. Wes
The man wants a simple, single wire antenna. How the heck is choking at the input end of a short length of open wire significantly better that doing it at the feedpoint? I know you and Dean are budd
Think about that for a minute. The tuner weighs something and requires DC power, Do you want to suspend a few pounds of weight + wind load + coax + power cable + balun(s) at the center of a horizon
Of course I read it. That's why I commented on the balun in front of the tuner. I'm not going to go into this in any more depth in public, and your email filter is a PITA that I'm not about to navig
I used some welded D-rings, secured with stainless steel hose clamps to guy my 55' feet of mostly DXEngineering tubing inverted-L. Theoretically self-supporting I wanted to reduce sway and one ring