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Total 13 documents matching your query.

1. Re: [TowerTalk] Phased Verticals (score: 1)
Author: <>
Date: Wed, 5 Apr 2006 14:30:14 -0400
Also note that the phasing for the cardioid array shown in that report is incorrect. You can't just add a "delay" line of 1/4 wavelength to get 90 degree phasing. Tor N4OGW _________________________
/archives//html/Towertalk/2006-04/msg00112.html (8,238 bytes)

2. Re: [TowerTalk] Phased Verticals (score: 1)
Author: <>
Date: Thu, 6 Apr 2006 8:16:29 -0400
Two verticals, 1/4 wave spacing, 90 degrees out of phase. Tor N4OGW _______________________________________________ _______________________________________________ TowerTalk mailing list TowerTalk@co
/archives//html/Towertalk/2006-04/msg00125.html (9,281 bytes)

3. Re: [TowerTalk] No Explanation (score: 1)
Author: <>
Date: Thu, 6 Apr 2006 14:32:59 -0400
You can find a detailed discussion in the ARRL Antenna book, or better in ON4UN's book. The difference in the length of the two feedlines is not 90 deg because of coupling between the verticals. Thi
/archives//html/Towertalk/2006-04/msg00141.html (8,174 bytes)

4. Re: [TowerTalk] No Explanation (score: 1)
Author: <>
Date: Thu, 6 Apr 2006 14:39:51 -0400
See also: Tor N4OGW _______________________________________________ _______________________________________________ TowerTalk mailing list TowerTalk
/archives//html/Towertalk/2006-04/msg00142.html (7,052 bytes)

5. Re: [TowerTalk] Mixing a 20m yagi with a 40m yagi on the sameboom..... (score: 1)
Author: <>
Date: Wed, 30 Aug 2006 11:22:20 -0400
I have both a EF-420 and an EF-420/240, so I can provide a little input: The 20m antenna in the EF-420/240 is identical to the plain EF-420, so no changes to the 20m dimensions were needed to interl
/archives//html/Towertalk/2006-08/msg01111.html (7,922 bytes)

6. Re: [TowerTalk] galvanized radial wires (score: 1)
Author: <>
Date: Tue, 6 Feb 2007 15:31:36 -0500
I think that in principal galvanized wire can last a long time, but how long is mostly determined by the quality/thickness of the galvanizing coating. I have also noticed that bits of EHS guy cable c
/archives//html/Towertalk/2007-02/msg00119.html (9,505 bytes)

7. Re: [TowerTalk] masts. (score: 1)
Author: <>
Date: Fri, 1 Jun 2007 14:51:10 -0400
Also...if you are only planning on a single moderately-sized (i.e. not a 40m full sized) antenna immediately above a thrust bearing, I don't see anything wrong with using heavy-wall conduit for a ma
/archives//html/Towertalk/2007-06/msg00020.html (8,336 bytes)

8. Re: [TowerTalk] what not to do in your tower (score: 1)
Author: RT Clay <>
Date: Fri, 23 Apr 2010 11:16:39 -0700 (PDT)
If you go to his home page you will find other interesting things: - he has two other 50 ft towers- which are apparently unguyed? - the Phillystran is 2100 rather than the correct 4000 lb strength -
/archives//html/Towertalk/2010-04/msg00723.html (8,744 bytes)

9. Re: [TowerTalk] 4 square for 80 (score: 1)
Author: RT Clay <>
Date: Fri, 23 Sep 2016 18:15:22 +0000 (UTC)
Interesting comments re 4-squares. I currently have up a "wire compromise in the woods" 4 square for 80 that seems to work quite well. Here's what I have done: In the center of the 4-square is a 69 f
/archives//html/Towertalk/2016-09/msg00355.html (10,654 bytes)

10. Re: [TowerTalk] 4 square for 80 (score: 1)
Author: RT Clay <>
Date: Sun, 25 Sep 2016 18:21:58 +0000 (UTC)
I could slope them out and up into the surrounding trees, but it would be harder to make them identical in that case because the 4 support ropes are going out into trees at different heights. Also s
/archives//html/Towertalk/2016-09/msg00407.html (11,356 bytes)

11. Re: [TowerTalk] 4 square (score: 1)
Author: RT Clay <>
Date: Mon, 26 Sep 2016 20:43:24 +0000 (UTC)
If this is for 80m and it is a 1/4-wave side square, the verticals need to be a little less than 50 feet away from the tower, not 33 ft. Tor N4OGW _______________________________________________ ____
/archives//html/Towertalk/2016-09/msg00458.html (8,660 bytes)

12. Re: [TowerTalk] reversible Beverage (score: 1)
Author: RT Clay <>
Date: Wed, 5 Oct 2016 19:51:24 +0000 (UTC)
I used to have a DX Engineering reversible beverage here and did make my own homebrew open wire also because of the cost. I used aluminum electric fence wire. I did use a narrower spacing to try and
/archives//html/Towertalk/2016-10/msg00050.html (10,668 bytes)

13. Re: [TowerTalk] Shunt Feed Mystery (score: 1)
Author: RT Clay <>
Date: Fri, 13 Dec 2019 18:49:16 +0000 (UTC)
I'm not sure that shows that the problem is the 40m loop. Certainly you have a problem with a ferrite heating up. That ferrite is probably somewhere between the main tower and an insulated element. A
/archives//html/Towertalk/2019-12/msg00088.html (12,754 bytes)

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