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References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*\[TowerTalk\]\s+Length\s+of\s+Inverted\-L\.\s*$/: 8 ]

Total 8 documents matching your query.

1. [TowerTalk] Length of Inverted-L. (score: 1): Author: N4ZR <n4zr@comcast.net>; Date: Fri, 5 Oct 2018 11:11:39 -0400; What to do when two respected references differ? ON4UN's book assumes an Inverted-L is always a quarter wave ~135 feet), while the ARRL Antenna Book assumes 165-170 feet. ON4UN mentions longer ante; /archives//html/Towertalk/2018-10/msg00007.html (7,068 bytes)
2. Re: [TowerTalk] Length of Inverted-L. (score: 1): Author: "Wes Attaway $N5WA$" <wesattaway@bellsouth.net>; Date: Fri, 5 Oct 2018 11:14:55 -0500; Pete: I think the main reason to adjust the length of an Inverted-L antenna is to move the point of resonance, i.e. to get the point of lowest SWR where you want it within the band. You can model the; /archives//html/Towertalk/2018-10/msg00009.html (9,490 bytes)
3. [TowerTalk] Length of Inverted-L. (score: 1): Author: "Jim Thomson" <jim.thom@telus.net>; Date: Fri, 5 Oct 2018 09:25:39 -0700; <What to do when two respected references differ?? ON4UN's book assumes <an Inverted-L is always a quarter wave ~135 feet), while the ARRL <Antenna Book assumes 165-170 feet.? ON4UN mentions longer a; /archives//html/Towertalk/2018-10/msg00010.html (8,275 bytes)
4. Re: [TowerTalk] Length of Inverted-L. (score: 1): Author: <n6sj@earthlink.net>; Date: Fri, 5 Oct 2018 09:21:39 -0700; Pete I've had good luck with the longer approach. I put a 30-150pF variable cap in series with the feed point and nulled the SWR at 1830 KHz. I have only two elevated radials (each 135') but it tunes; /archives//html/Towertalk/2018-10/msg00011.html (8,944 bytes)
5. Re: [TowerTalk] Length of Inverted-L. (score: 1): Author: "john@kk9a.com" <john@kk9a.com>; Date: Fri, 5 Oct 2018 13:19:14 -0400; Excellent summary Jim. I have always used 135' of wire and either matched it with a hairpin or lived with the elevated SWR. I am wondering what the advantage is to using longer wire and adding capaci; /archives//html/Towertalk/2018-10/msg00012.html (8,514 bytes)
6. Re: [TowerTalk] Length of Inverted-L. (score: 1): Author: terry burge <ki7m@comcast.net>; Date: Fri, 5 Oct 2018 11:02:43 -0700 (PDT); Hi Guys, I've had pretty good luck with my inv-L which is about 109' going over a big Oak tree near my Hytower. I have a large 56uH edge wound inductor that I tap to get multiple resonance points bet; /archives//html/Towertalk/2018-10/msg00013.html (11,613 bytes)
7. Re: [TowerTalk] Length of Inverted-L. (score: 1): Author: "Joe Subich, W4TV" <lists@subich.com>; Date: Fri, 5 Oct 2018 14:15:56 -0400; The longer inverted L moves the maximum current up into the vertical section resulting in a higher feed impedance and more efficiency. The higher the maximum current (to a point), the less loss in th; /archives//html/Towertalk/2018-10/msg00014.html (9,004 bytes)
8. Re: [TowerTalk] Length of Inverted-L. (score: 1): Author: "Richard (Rick) Karlquist" <richard@karlquist.com>; Date: Fri, 5 Oct 2018 11:33:30 -0700; The longer inverted L moves the maximum current up into the vertical section resulting in a higher feed impedance and more efficiency. The higher the maximum current (to a point), the less loss in th; /archives//html/Towertalk/2018-10/msg00015.html (8,923 bytes)

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