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1. [TowerTalk] Attic Based Antennas (score: 1): Author: "Dave Tipton, W5DMT" <dave@w5dmt.com>; Date: Thu, 9 Sep 2010 08:35:20 -0500; I'm looking for ideas for an antenna that could be used on 75M with reasonable results, can be mounted in an attic of a small townhouse. I'm guessing total dimensions won't be more than 40 x 20 with; /archives//html/Towertalk/2010-09/msg00203.html (7,625 bytes)
2. Re: [TowerTalk] Attic Based Antennas (score: 1): Author: jimlux <jimlux@earthlink.net>; Date: Thu, 09 Sep 2010 07:10:53 -0700; What is "reasonable" <grin> OK.. a full sized dipole would be about 130 feet long, and you've got a maximum of about 30-40, or 1/4 the size .. The feedpoint impedance of a 40 foot dipole at 4 MHz is; /archives//html/Towertalk/2010-09/msg00204.html (9,193 bytes)
3. Re: [TowerTalk] Attic Based Antennas (score: 1): Author: "Larry stowell" <lclarks@nc.rr.com>; Date: Thu, 9 Sep 2010 10:27:29 -0400; Dave take a look at SGC's website http://www.sgcworld.com/ . Look under "technical" and they have some ideas on stealth antennas. Wire bend around, not as efficient, but works 73 Larry K1ZW --Origina; /archives//html/Towertalk/2010-09/msg00205.html (9,923 bytes)
4. Re: [TowerTalk] Attic Based Antennas (score: 1): Author: "Jim Brown" <jim@audiosystemsgroup.com>; Date: Thu, 09 Sep 2010 08:01:24 -0700; I would think about something you can load as a long wire against the best counterpoise you can find. Try to find some enameled wire, #18 or so is pretty low visibility. It can be run around outside.; /archives//html/Towertalk/2010-09/msg00206.html (8,586 bytes)
5. Re: [TowerTalk] Attic Based Antennas (score: 1): Author: Mirko S57AD <miroslav.sibilja@amis.net>; Date: Thu, 09 Sep 2010 17:05:15 +0200; Some 40 years ago I've been in almost same situation, dwelling in huge mansion building with attic 50' * 33' (15m * 10m). I simply made bent dipole around the attic (nailed dipole wire to wooden beam; /archives//html/Towertalk/2010-09/msg00207.html (9,947 bytes)
6. Re: [TowerTalk] Attic Based Antennas (score: 1): Author: "Jim Hargrave" <w5ifp@gvtc.com>; Date: Thu, 9 Sep 2010 11:32:50 -0500; Dave, There are several antennas that work well in limited space. A mobile Screwdriver for one. I would suggest you look at the DDRR antenna. It can be erected in a very small space. you can use wire; /archives//html/Towertalk/2010-09/msg00210.html (10,930 bytes)
7. Re: [TowerTalk] Attic Based Antennas (score: 1): Author: Rik van Riel <riel@surriel.com>; Date: Thu, 09 Sep 2010 15:07:43 -0400; At the feed point, one can mount something like an LDG auto-tuner. Those devices can handle a pretty high SWR and will probably allow you to run the above antenna on all the bands 80 and up. In a 40x; /archives//html/Towertalk/2010-09/msg00218.html (8,909 bytes)
8. Re: [TowerTalk] Attic Based Antennas (score: 1): Author: "Rick Karlquist" <richard@karlquist.com>; Date: Thu, 9 Sep 2010 12:18:38 -0700; I think the best you can do is to cover the end walls of the attic with wire screening (as end loading) and then run a dipole between the screens. You will need to install some decent sized air core; /archives//html/Towertalk/2010-09/msg00219.html (8,354 bytes)
9. Re: [TowerTalk] Attic Based Antennas (score: 1): Author: jimlux <jimlux@earthlink.net>; Date: Thu, 09 Sep 2010 21:55:56 -0700; If you have a tuner at the feedpoint, it's not entirely clear that the extra wire buys you much. _______________________________________________ _______________________________________________ TowerT; /archives//html/Towertalk/2010-09/msg00220.html (9,276 bytes)

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