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References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*\[CQ\-Contest\]\s+4\s+Square\/\s+Raised\s+Radial\s+Questions\s*$/: 17 ]

Total 17 documents matching your query.

1. [CQ-Contest] 4 Square/ Raised Radial Questions (score: 1)
Author: "Robert Shohet" <kq2m@earthlink.net>
Date: Mon, 28 Jan 2008 08:19:34 -0500
Hi, I am in the process of fixing my 80 meter 4-square and have some questions regarding raised radials. 1) Since my 4 square is "cut" for 3.65 and the radials need to work on 3.5 as well as 3.8mhz,
/archives//html/CQ-Contest/2008-01/msg00430.html (7,606 bytes)

2. Re: [CQ-Contest] 4 Square/ Raised Radial Questions (score: 1)
Author: "Leigh S. Jones, KR6X" <kr6x@kr6x.com>
Date: Mon, 28 Jan 2008 06:27:27 -0800
You didn't mention the height of your radials... interaction with ground might affect their resonance. By the way, the length (and height) of elevated radials will affect the apparent resonant freque
/archives//html/CQ-Contest/2008-01/msg00436.html (10,094 bytes)

3. Re: [CQ-Contest] 4 Square/ Raised Radial Questions (score: 1)
Author: "David Robbins K1TTT" <k1ttt@arrl.net>
Date: Mon, 28 Jan 2008 22:03:55 +0000
The more radials there are the less important it is to tune them to a particular frequency. As was noted already the height is important if you are going to be picky. On my 4-square build last year I
/archives//html/CQ-Contest/2008-01/msg00448.html (11,328 bytes)

4. Re: [CQ-Contest] 4 Square/ Raised Radial Questions (score: 1)
Author: "Tom Rauch" <w8ji@contesting.com>
Date: Mon, 28 Jan 2008 17:23:16 -0500
It makes very little difference. What I did when I made elevated radial measurements is I tuned the radials to resonance by connecting them as dipoles. Then after they were tuned, I connected themm
/archives//html/CQ-Contest/2008-01/msg00450.html (9,348 bytes)

5. Re: [CQ-Contest] 4 Square/ Raised Radial Questions (score: 1)
Author: "Tom Rauch" <w8ji@contesting.com>
Date: Tue, 29 Jan 2008 05:43:33 -0500
Not true. With a small elevated ground system any path to earth reduces field strength. That's etched in stone, it isn't a guess. While the amount of loss varies can vary it always adds some loss. T
/archives//html/CQ-Contest/2008-01/msg00462.html (8,990 bytes)

6. Re: [CQ-Contest] 4 Square/ Raised Radial Questions (score: 1)
Author: "Joe Subich, W4TV" <w4tv@subich.com>
Date: Tue, 29 Jan 2008 01:52:18 -0500
David, IF you take that view, you still want a choke on the phasing network end of the line to the verticals. You do not want radial current on the OUTSIDE of the coax (common mode current) upsetting
/archives//html/CQ-Contest/2008-01/msg00463.html (13,601 bytes)

7. Re: [CQ-Contest] 4 Square/ Raised Radial Questions (score: 1)
Author: "David Robbins K1TTT" <k1ttt@arrl.net>
Date: Tue, 29 Jan 2008 22:00:27 +0000
How can the current on the outside of the shield of the coax upset a phasing network that is in an all metal box? David Robbins K1TTT e-mail: mailto:k1ttt@arrl.net web: http://www.k1ttt.net AR-Cluste
/archives//html/CQ-Contest/2008-01/msg00472.html (16,051 bytes)

8. Re: [CQ-Contest] 4 Square/ Raised Radial Questions (score: 1)
Author: "David Robbins K1TTT" <k1ttt@arrl.net>
Date: Tue, 29 Jan 2008 22:33:26 +0000
I wasn't talking about ground losses, I was considering the effect of adding ferrites to the shield of the coax feeding the verticals. Given that the Feedpoint is raised, the radials are raised, and
/archives//html/CQ-Contest/2008-01/msg00473.html (10,741 bytes)

9. Re: [CQ-Contest] 4 Square/ Raised Radial Questions (score: 1)
Author: "Joe Subich, W4TV" <w4tv@subich.com>
Date: Tue, 29 Jan 2008 20:01:21 -0500
At the very least currents on one feedline can couple to the other antennas (other ground systems) across the metal box. With elevated radials, the radials become part of the radiating system and cur
/archives//html/CQ-Contest/2008-01/msg00477.html (18,031 bytes)

10. Re: [CQ-Contest] 4 Square/ Raised Radial Questions (score: 1)
Author: k3bu@optonline.net
Date: Wed, 30 Jan 2008 14:41:05 +0000 (GMT)
Just picture wire connecting bases of all verticals, connected at the phasing box. The best demonstration of the effect is the 3 vertical array fed by Stack-Match phasing unit, advertised for this p
/archives//html/CQ-Contest/2008-01/msg00487.html (9,081 bytes)

11. Re: [CQ-Contest] 4 Square/ Raised Radial Questions (score: 1)
Author: "David Robbins K1TTT" <k1ttt@arrl.net>
Date: Wed, 30 Jan 2008 22:07:20 +0000
Sounds like something wrong with that box to me. On my 4-square the feedpoints are all connected by radials, the feedlines all connect to the bases and the switchbox just like another radial... and i
/archives//html/CQ-Contest/2008-01/msg00496.html (10,891 bytes)

12. Re: [CQ-Contest] 4 Square/ Raised Radial Questions (score: 1)
Author: "Joe Subich, W4TV" <w4tv@subich.com>
Date: Wed, 30 Jan 2008 22:29:34 -0500
Elevated radial systems do not have nearly the "sinking capability" as an infinite, perfectly conducting ground plane. In a perfect world, if the vertical was fed by coax from underneath an infinite
/archives//html/CQ-Contest/2008-01/msg00501.html (13,485 bytes)

13. Re: [CQ-Contest] 4 Square/ Raised Radial Questions (score: 1)
Author: k3bu@optonline.net
Date: Thu, 31 Jan 2008 12:43:53 +0000 (GMT)
It has to do with configuration of 3 vertical array a StackMatch, using disconnected element as a parasitic, coax line turning that element into reflector, but connected shields messing up the curre
/archives//html/CQ-Contest/2008-01/msg00512.html (9,605 bytes)

14. Re: [CQ-Contest] 4 Square/ Raised Radial Questions (score: 1)
Author: "Robert Naumann" <w5ov@w5ov.com>
Date: Thu, 31 Jan 2008 07:45:29 -0600
A StackMatch is not intended for this type of installation (K8UR parasitic array). This is like saying a hammer has something wrong with it since it needs to be modified to drive a screw. 73, Bob W5O
/archives//html/CQ-Contest/2008-01/msg00516.html (10,430 bytes)

15. Re: [CQ-Contest] 4 Square/ Raised Radial Questions (score: 1)
Author: k3bu@optonline.net
Date: Fri, 01 Feb 2008 02:50:25 +0000 (GMT)
"StackMatch for Verticals User's Guide Thank you for your purchase of a WX0B StackMatch. Users Guide This WX0B StackMatch can be used for stacking two or three monoband verticals. It will give the u
/archives//html/CQ-Contest/2008-01/msg00529.html (10,043 bytes)

16. Re: [CQ-Contest] 4 Square/ Raised Radial Questions (score: 1)
Author: Pete Smith <n4zr@contesting.com>
Date: Fri, 01 Feb 2008 06:37:28 -0500
Yuri, you're not reading the Stackmatch description carefully enough. The K8UR array is parasitic, and relies on a switchbox that disconnects all antennas except the one that is driven, and then uses
/archives//html/CQ-Contest/2008-02/msg00001.html (9,874 bytes)

17. Re: [CQ-Contest] 4 Square/ Raised Radial Questions (score: 1)
Author: k3bu@optonline.net
Date: Fri, 01 Feb 2008 15:38:39 +0000 (GMT)
OK, I can't tell the difference between the hammer and a screwdriver, now I can't read :-) "The three antennas are set up in a delta pattern or triangular pattern, equidistant from each other. " Can
/archives//html/CQ-Contest/2008-02/msg00019.html (9,631 bytes)


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