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1. Topband: Shunt Feed help (score: 1): Author: bob burton via Topband <topband@contesting.com>; Date: Tue, 10 Oct 2017 12:22:13 +0000 (UTC); Looking for some shunt feed wisdom from the list. Trying to shunt feed 25G tower ( 8-10ft sticks, 8ft flat top, base 18" out of the ground = total tower 89.5 ft) has a F12 C31XR just above the thrust; /archives//html/Topband/2017-10/msg00043.html (7,990 bytes)
2. Re: Topband: Shunt Feed help (score: 1): Author: Brian Pease <bpease2@myfairpoint.net>; Date: Tue, 10 Oct 2017 09:47:48 -0400; I have used NEC4 to model my short 50 ft tower for shunt feed on 160, 80, and 40 meters. It has a small triband beam with all elements grounded. The 160m shunt wire goes to the top, of course, and; /archives//html/Topband/2017-10/msg00044.html (8,926 bytes)
3. Re: Topband: Shunt Feed help (score: 1): Author: "Marc Wullaert ON4MA" <marc.wullaert3@telenet.be>; Date: Tue, 10 Oct 2017 19:43:00 +0200; Hi BoB, be careful with the c31xr as the 20m reflector is on the far end. maximum voltage present there and mine burned down at the isolator while my freestanding tower (24m) with c31xr and 5m higher; /archives//html/Topband/2017-10/msg00046.html (9,785 bytes)
4. Re: Topband: Shunt Feed help (score: 1): Author: "Gene Smar" <ersmar@verizon.net>; Date: Tue, 10 Oct 2017 21:26:24 -0400; Bob: I'm guessing that the voltage on the 20M director is due to QRO operation on 160M. I recall reading an email from Natan, or at least he was mentioned as the originator of the advice, here on TT; /archives//html/Topband/2017-10/msg00047.html (11,319 bytes)

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