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References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*Topband\:\s+Adding\s+80\s+m\s+to\s+160\s+m\s+quarterwave\s+vertical\s*$/: 5 ]

Total 5 documents matching your query.

1. Topband: Adding 80 m to 160 m quarterwave vertical (score: 1): Author: List Mail <mail10@barefoothorse.com.au>; Date: Tue, 6 Apr 2021 13:11:26 +1000; I have up and operational a vertical for 160 m. Its about 30 m of 250 mm triangular mast (Deeco) topped by about 5 m of 50 mm aluminium mast with a small top hat to resonate around 1840 kHz. Fed dire; /archives//html/Topband/2021-04/msg00035.html (9,134 bytes)
2. Re: Topband: Adding 80 m to 160 m quarterwave vertical (score: 1): Author: "Lloyd - N9LB" <lloydberg@tds.net>; Date: Mon, 5 Apr 2021 22:48:36 -0500; Why not remove the 80m wire and simply run the entire 30m tall mast (with additional top hat) on 80m as a half-wave vertical? A "legal Limit" antenna tuner should handle it, or build your own 80m ant; /archives//html/Topband/2021-04/msg00038.html (9,732 bytes)
3. Re: Topband: Adding 80 m to 160 m quarterwave vertical (score: 1): Author: "Richard (Rick) Karlquist" <richard@karlquist.com>; Date: Mon, 5 Apr 2021 21:47:56 -0700; I did exactly what you describe with my 27m (90 ft) mast. It apparently worked fine (I didn't have another antenna to compare it to.) I built a homebrew tuner. I don't know of a commercial one that; /archives//html/Topband/2021-04/msg00040.html (8,267 bytes)
4. Re: Topband: Adding 80 m to 160 m quarterwave vertical (score: 1): Author: Rob Atkinson <ranchorobbo@gmail.com>; Date: Tue, 6 Apr 2021 06:15:21 -0500; A ham can certainly try a voltage fed 180 degree vertical, but the physical conditions at the feedpoint change dramatically because it's quite possible a few KV of RF v. will be there, unlike what we; /archives//html/Topband/2021-04/msg00041.html (7,074 bytes)
5. Re: Topband: Adding 80 m to 160 m quarterwave vertical (score: 1): Author: List Mail <mail10@barefoothorse.com.au>; Date: Tue, 6 Apr 2021 22:58:07 +1000; Hi Rob, I have a ceramic power pole insulator at the base of the tower, so Im not concerned about voltage there. Incidentally, I measured the impedance of the tower at the base as 666 ohms at its res; /archives//html/Topband/2021-04/msg00042.html (8,369 bytes)

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