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1. Topband: K9AY Center support (score: 1): Author: k9ay@k9ay.com (K9AY); Date: Thu, 21 Nov 2002 20:54:27 -0600; -- Tom and fellow Topbanders, My modeling exercises suggest that a grounded metal mast will degrade the pattern significantly. It will still have some F/B, but the peak F/B in the null will be reduc; /archives//html/Topband/2002-11/msg00130.html (8,680 bytes)
2. Topband: K9AY Center support (score: 1): Author: n4zr@contesting.com (Pete Smith); Date: Fri, 22 Nov 2002 06:57:07 -0500; I keep reading about this, but have not seen any practical "how to" information that is detailed enough for me to understand. Is the objective of detuning simply to move the resonance out of the 160M; /archives//html/Topband/2002-11/msg00134.html (7,590 bytes)
3. Topband: K9AY Center support (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Fri, 22 Nov 2002 07:59:04 -0500; What you generally want to do is cause an equal and out-of-phase current in the drop wire that opposes radiation from the tower. The only accurate way to do that is with an actual signal strength te; /archives//html/Topband/2002-11/msg00135.html (8,067 bytes)
4. Topband: K9AY Center support (score: 1): Author: n4zr@contesting.com (Pete Smith); Date: Fri, 22 Nov 2002 08:16:47 -0500; OK, I can visualize how this might work, but I'm missing a couple of steps. On a shunt fed tower, for example, where is the "drop wire" connected to the system? Is it tuned by changing the length, or; /archives//html/Topband/2002-11/msg00136.html (7,617 bytes)
5. Topband: K9AY Center support (score: 1): Author: w8ji@contesting.com (Tom Rauch); Date: Fri, 22 Nov 2002 09:43:50 -0500; What spacing do you have between the mast and the antenna element, and how tall is the mast Gary? I've never seen that effect either in a model or in real-life antennas. I just checked one random ol; /archives//html/Topband/2002-11/msg00138.html (8,063 bytes)
6. Topband: K9AY Center support (score: 1): Author: k9ay@k9ay.com (K9AY); Date: Fri, 22 Nov 2002 12:43:11 -0600; -- Tom I first modeled the K9AY loop on 160M with the published dimensions (25 ft overall height), with the terminating resistor adjusted for the deepest null. I use the "real ground" option because; /archives//html/Topband/2002-11/msg00140.html (8,697 bytes)

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