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Total 11 documents matching your query.

1. Topband: Center support on K9AY Loop (score: 1): Author: tombaugh@discoverynet.com (tombaugh); Date: Wed, 20 Nov 2002 07:01:43 -0600; I've been told that there has been some talk about conductive (metal) center supports for receiving antennas like the K9AY Directional loop antenna on this reflector. I have browsed the archives unsu; /archives//html/Topband/2002-11/msg00113.html (7,800 bytes)
2. Topband: Center support on K9AY Loop (score: 1): Author: kb9cry@attbi.com (Phil - KB9CRY); Date: Wed, 20 Nov 2002 18:29:24 -0600; Yes it will degrade it. Period. Ask Earl Cunningham about it at k6se@arrl.net Earl, with others, helped introduce us all to pennants, loops, and flags.; /archives//html/Topband/2002-11/msg00115.html (8,349 bytes)
3. Topband: Center support on K9AY Loop (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Wed, 20 Nov 2002 20:40:56 -0500; Hi Tom, It makes absolutely no difference at all if you use a metal pole or non-metallic pole as long as you insulate the pole from the wire. The antenna is a fairly low impedance antenna, and any e; /archives//html/Topband/2002-11/msg00116.html (7,951 bytes)
4. Topband: Center support on K9AY Loop (score: 1): Author: W4EF@dellroy.com (Michael Tope); Date: Thu, 21 Nov 2002 05:10:21 -0500; Tom and Tom: FWIW, I have been modeling a set of K9AY loops with EZNEC. My modeling results (real high-accuracy ground - average conductivity) indicate that their is only a slight difference (about 2; /archives//html/Topband/2002-11/msg00119.html (8,408 bytes)
5. Topband: Center support on K9AY Loop (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Thu, 21 Nov 2002 09:56:23 -0500; 2dB null depth variation is the extreme with the mast near the wire. It would be even less if the mast were insulated at the antenna by a few feet of PVC, and less still if the mast were floated at; /archives//html/Topband/2002-11/msg00122.html (8,896 bytes)
6. Topband: Center support on K9AY Loop (score: 1): Author: W4EF@dellroy.com (Michael Tope); Date: Thu, 21 Nov 2002 15:53:21 -0500; Any suggestions for how to go about decoupling a nearby tower from a K9AY loop array, Tom? My modeling suggests that this may be a problem, but I am not sure if I trust my results. The amount of patt; /archives//html/Topband/2002-11/msg00123.html (9,141 bytes)
7. Topband: Center support on K9AY Loop (score: 1): Author: n4zr@contesting.com (Pete Smith); Date: Thu, 21 Nov 2002 16:15:16 -0500; Mike, I'm a little skeptical about this technique. Have you tried allowing the direct connection, but interposing a few-ohm load in the bottom most segment of the tower (and make that segment very sh; /archives//html/Topband/2002-11/msg00124.html (8,108 bytes)
8. Topband: Center support on K9AY Loop (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Thu, 21 Nov 2002 21:20:31 -0500; Sounds reasonable. You probably have severe pattern distortion and you can probably detune the tower and reduce it. You simply must add out-of-phase currents in the shunt that are exactly equal and; /archives//html/Topband/2002-11/msg00128.html (8,950 bytes)
9. Topband: Center support on K9AY Loop (score: 1): Author: W4EF@dellroy.com (Michael Tope); Date: Fri, 22 Nov 2002 06:51:51 -0500; According to the EZNEC manual, whenever you insert the direct connection with the Sommerfield ground, NEC inserts an unknown series resistance. If I switch to real mininec ground, I don't get any war; /archives//html/Topband/2002-11/msg00133.html (8,427 bytes)
10. Topband: Center support on K9AY Loop (score: 1): Author: W4EF@dellroy.com (Michael Tope); Date: Sun, 24 Nov 2002 10:09:04 -0800; Tom, Actually there is no gamma arm currently. We are not shunt feeding the 45G tower (yet). The TX antenna is a low 160 meter dipole that is sitting at the edge of the cliff another 100' or so in t; /archives//html/Topband/2002-11/msg00148.html (8,686 bytes)
11. Topband: Center support on K9AY Loop (score: 1): Author: k4kyv@hotmail.com (Donald Chester); Date: Sun, 24 Nov 2002 21:44:39 +0000; Looking over both QST articles, it seems to me that the K9AY loop is nearly identical to the diamond or delta version of the flag/pennant. The main difference is the location of the feed point and te; /archives//html/Topband/2002-11/msg00150.html (8,556 bytes)

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