To: <towertalk@contesting.com> Hi Ron, The loop simply splits the current into two areas of half the level, the sum of which is nearly identical to driven element current in a yagi of the same patter
To: <towertalk@contesting.com> Hi Ron, The loop simply splits the current into two areas of half the level, the sum of which is nearly identical to driven element current in a yagi of the same patter
Excuse the stttering post yesterday. MCIONE does that if I post at busy times of the day, I have no idea why. To: <towertalk@contesting.com> Hi Steve, Let me ask a few questions. I have a nearly 200
To: <towertalk@contesting.com> That's correct Dave, and at the same time don't forget that field is a nearby infinite impedance field easily distorted by even the poorest conductors. Every day we wor
To: <towertalk@contesting.com> I use the same basic technique, with one major change. I use hollow aluminum arrows, and fill the outer half (near the point) with solder or lead. I do this by cutting
To: <towertalk@contesting.com> What other "loading loss" substitutes for "NO lossy traps"? Is it interlaced fllsized elements for each band, or a form of "lossless linear loading" that adds the some
To: <towertalk@contesting.com> Hi John, I had to do some tests of different antennas for a manufacturer, and I bought a Butternut. It was one the best performer of the group tested. If you elevate th
To: <towertalk@contesting.com> Hi Jim, You ask some good questions below. The questions touch on a lot of questionable conclusions published in amateur and professional text lately. I have no idea wh
To: <towertalk@contesting.com> Hi Joe and all, First of all let me say that I really appreciate hands-on work and the direct approach used in the antenna tests. I'm not talking about that one specifi
To: <towertalk@contesting.com> A nice low impedance path from the tower to the house won't ground anything, a nice wide surface area connection to earth will. Only with a very good ground. It's a ser
To: <towertalk@contesting.com> That's one reason why disconnecting the feedline and all other cables OUTSIDE the bulkhead is a good idea, especially if you can pull the cables back a few feet. Of cou
To: <towertalk@contesting.com> Hi Steve, You are welcome to do that at your house, but I won't do that as a "rule" at my house or at most of the commercial installations I oversee. My closest tower i
To: <towertalk@contesting.com> Hi All, It's looking for that collection or source of opposing charges. In my installation, I prefer it do that out at the tower. Impedance isn't great for any groundin
To: <towertalk@contesting.com> No, read what I wrote below again. If it isn't clear, I'll try to explain it better. As explained in my paragraph above. Series impedance from common mode chokes PLUS t
To: <towertalk@contesting.com> Ameritron should be releasing a new tuner soon. I designed the tuner, and sent them the prototype a few months back. It features an edge wound silver-plated roller coil
To: <towertalk@contesting.com> Ameritron should be releasing a new tuner soon. I designed the tuner, and sent them the prototype a few months back. It features an edge wound silver-plated roller coil
To: <towertalk@contesting.com> The X-match, despite the marketing hyperbole all modern-age manufacturers engage in, is really just a conventional T network tuner. The unique feature is the network em
Hi Rag, The only requirement is that the RF switches have to exceed the absolute breakdown voltage of the capacitors by a reliable safety margin. That's true for all the RF switches in the tuner. Som
To: <towertalk@contesting.com> Hi Harvy, This might be a good time to point something important out. The coax ground with the .01 caps, incorrectly described as a "shielded ground", was published yea
Among some suggestions and questions I sent Tony in an e-mail, I promised Tony I'd do a two tone test on some of the small 73 mix cores he used. I measured RF current through a string of four beads (