Mail Archive Search: <+subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*\[TowerTalk\]\s+Shunt\s+Feed\s+Help\s*$/>

Results:

References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*\[TowerTalk\]\s+Shunt\s+Feed\s+Help\s*$/: 3 ]

Total 3 documents matching your query.

1. [TowerTalk] Shunt Feed Help (score: 1): Author: Kim Elmore <cw_de_n5op@sbcglobal.net>; Date: Sat, 17 Nov 2007 21:24:02 -0600; I'm sure shunt feeding towers has been beaten to death numerous times, but I have a specific question. I'm shunt feeding my 48 ft tower at 1.8 MHz, with various antennas on an 8 ft mast above the fee; /archives//html/Towertalk/2007-11/msg00372.html (7,700 bytes)
2. Re: [TowerTalk] Shunt Feed Help (score: 1): Author: TexasRF@aol.com; Date: Sun, 18 Nov 2007 11:25:41 EST; Kim, assuming the 65 +j445 is a good number, adding -445 ohms (198 pF) in series with the feed should result in 65 +j0. This in turn would yield a vswr of 1.3. So, a good first step would be adding t; /archives//html/Towertalk/2007-11/msg00379.html (9,309 bytes)
3. Re: [TowerTalk] Shunt Feed Help (score: 1): Author: "W5LT" <W5LT@tx.rr.com>; Date: Sun, 18 Nov 2007 09:51:49 -0600; Kim: I question the accuracy of the impedance measurement. If it was an accurate value at the base of the tower, you should have found a good match at around 200pfd of series capacitance. Z = R+jX =; /archives//html/Towertalk/2007-11/msg00385.html (8,849 bytes)

Current List: 1 - 3
Page: [1]