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Total 35 documents matching your query.

1. Topband: Condx in ARRL contest Sat morning (score: 1)
Author: "John Rogers" <JohnG3PQA@onetel.com>
Date: Sat, 4 Dec 2004 18:13:40 -0000
Unusual propagation from south central UK to USA this morning. Usually the strong east coast contest stations work scores of europeans but this morning it was the reverse. When I listened about 0630z
/archives//html/Topband/2004-12/msg00059.html (7,509 bytes)

2. Re: Topband: ? re Electric fence wire - fence QRN suppression (score: 1)
Author: "John Rogers" <JohnG3PQA@onetel.com>
Date: Sun, 2 Jan 2005 12:17:25 -0000
-- Original Message -- From: "R Webb" <g0urr@btopenworld.com> Hi All, in the Stew Perry, I used Electric Fence Wire, ie 3 strands of silver wire wound within many strands of synthetic rope. It seemed
/archives//html/Topband/2005-01/msg00010.html (8,192 bytes)

3. Re: Topband: ? re Electric fence wire - connection - fence QRNsuppression (score: 1)
Author: "John Rogers" <JohnG3PQA@onetel.com>
Date: Mon, 3 Jan 2005 09:15:46 -0000
Ricky, Thanks for describing it precisely! The only addition I would suggest for a long term fix is to cover the selfamalgamating/annealing tape with a layer of PVC tape, as have found here it someti
/archives//html/Topband/2005-01/msg00024.html (7,720 bytes)

4. Re: Topband: Preamp power supply (score: 1)
Author: "John Rogers" <JohnG3PQA@onetel.com>
Date: Fri, 25 Feb 2005 17:16:15 -0000
I had similar noise problems, building the PSU and preamp in the same box, which eventually were fixed by a small ferrite choke in series with the DC supply and an extra 0.47uF capacitor, both on the
/archives//html/Topband/2005-02/msg00235.html (8,212 bytes)

5. Re: Topband: Beverage versus K9AY versus short verticals (score: 1)
Author: "John Rogers" <johnr1g3pqa@onetel.com>
Date: Wed, 26 Jul 2006 10:17:42 +0100
vertical(s). Seperation may be as little as 10', definitely no more than 60'. I use a 3ft high 350ft E-W beverage only 20ft behind my shunt fed 160m vertical and in practice it works well both in re
/archives//html/Topband/2006-07/msg00050.html (8,221 bytes)

6. Re: Topband: Auroral Oval - Propagation this morning (score: 1)
Author: "John Rogers" <johnr1g3pqa@onetel.com>
Date: Sat, 21 Oct 2006 17:33:13 +0100
Condx play strange tricks on 160m occasionally, and one of them was hearing Cal W7IZD in MT rst559 about 0310 despite being inside the Auroral Oval! The magnetic disturbance would normally be expect
/archives//html/Topband/2006-10/msg00147.html (8,281 bytes)

7. Re: Topband: Frustration (score: 1)
Author: "John Rogers" <johnr1g3pqa@onetel.com>
Date: Mon, 29 Oct 2007 19:02:04 -0000
I think one of the major attractions of 160m is that working DX is not easy from an average setup, but a real thrill if you make a rare QSO especially after spending days or weeks using your own eff
/archives//html/Topband/2007-10/msg00179.html (7,013 bytes)

8. Topband: G-ZL condx good (score: 1)
Author: "John Rogers" <johnr1g3pqa@onetel.com>
Date: Sun, 4 Nov 2007 08:02:38 -0000
Condx also excellent from central south G to ZL the last 2 days. Openings 0655 to 0725 , skip very selective. _______________________________________________ Topband mailing list Topband@contesting.c
/archives//html/Topband/2007-11/msg00007.html (6,233 bytes)

9. Re: Topband: 160 Receiving (score: 1)
Author: "John Rogers" <johnr1g3pqa@onetel.com>
Date: Tue, 17 Jun 2008 17:28:23 +0100
Hi Ken, 480ft is not too short for a beverage - especially as perhaps you could run two along opposing sides in phase and get broadside gain, depending on what directions your land faces and space a
/archives//html/Topband/2008-06/msg00045.html (7,460 bytes)

10. Re: Topband: Unusual Propagation (score: 1)
Author: "John Rogers" <johnr1g3pqa@onetel.com>
Date: Sun, 02 Nov 2008 10:20:25 -0800
Anyway, my sun was still over 2 hours from sunset, being 30+ degrees up in the sky... The band was very quiet and the signals were right at the noise level but Q5... I'm not sure how the signals got
/archives//html/Topband/2008-11/msg00005.html (8,369 bytes)

11. Topband: New 160m QRN Problem in EU (score: 1)
Author: "John Rogers" <johnr1g3pqa@onetel.com>
Date: Sun, 02 Nov 2008 10:20:33 -0800
During the last month I have been hearing a new source of qrn which seems diffierent from the usual local switch mode rubbish. Only audible at night, and strongest on 90 deg. east beverage. Up to s7
/archives//html/Topband/2008-11/msg00007.html (7,143 bytes)

12. Re: Topband: Lesson Learned & Coax for 2-wire beverage (score: 1)
Author: "John Rogers" <johnr1g3pqa@onetel.com>
Date: Tue, 25 Nov 2008 05:48:53 -0800
Could the reactance of a 5ft earth lead (albeit small) be unbalancing the feed and adversely affecting termination in reverse direction? Results with 2-wire beverages using balanced line appear to b
/archives//html/Topband/2008-11/msg00209.html (8,032 bytes)

13. Re: Topband: New to 160m! (score: 1)
Author: "John Rogers" <johnr1g3pqa@onetel.com>
Date: Sat, 6 Jun 2009 22:52:12 +0100
Welcome to 160m.. A great band with different technical and operational challenges many of us are addicted to. Too much to describe in a brief email. A good start is in two excellent books:- 1. DXing
/archives//html/Topband/2009-06/msg00028.html (10,204 bytes)

14. Topband: EZNEC Model earth for Inv. L Re: EZNEC Shunt Feed Model Gain (score: 1)
Author: "John Rogers" <johnr1g3pqa@onetel.com>
Date: Fri, 21 Aug 2009 09:42:56 +0100
George K8GG wrote:- When I model it as a shunt fed tower, base grounded, with 50 feet of 1.6 inch OD pipe about 27 inches from the center of the tower as the shunt feed rod, the gain drops to about 0
/archives//html/Topband/2009-08/msg00085.html (9,762 bytes)

15. Re: Topband: EZNEC Model earth for Inv. L Re: EZNEC Shunt Feed Model Gain (score: 1)
Author: "John Rogers" <johnr1g3pqa@onetel.com>
Date: Sat, 22 Aug 2009 21:53:24 +0100
Thanks again to Guy and Jerry for very comprehensive answers! 73 John No virus found in this outgoing message. Checked by AVG - www.avg.com Version: 8.5.409 / Virus Database: 270.13.64/2319 - Release
/archives//html/Topband/2009-08/msg00090.html (8,510 bytes)

16. Re: Topband: k9ay loop (score: 1)
Author: "John Rogers" <johnr1g3pqa@onetel.com>
Date: Sat, 5 Sep 2009 10:09:17 +0100
is anyone aware of a kit for building this k9ay loop system, other than AS. i just can't see putting out almost $400 for a relay and an xfmr ! david/wd4kpd David, Far Circuits make a pcb kit. http:/
/archives//html/Topband/2009-09/msg00021.html (7,711 bytes)

17. Re: Topband: k9ay loop (score: 1)
Author: "John Rogers" <johnr1g3pqa@onetel.com>
Date: Sat, 5 Sep 2009 18:23:22 +0100
John I have this kit.. where are the errors documented at and what extra components do you need? My pcb is dated 9/9/06 bought at Dayton this year. The errors are very minor. Fred KF9GX of Far Circu
/archives//html/Topband/2009-09/msg00026.html (9,119 bytes)

18. Re: Topband: Beverages inside a hedgerow? (score: 1)
Author: "John G3PQA" <g3pqa@onetel.com>
Date: Wed, 18 Nov 2009 04:33:17 -0800
i can run one of the beverages at about 290 deg that is over 1150' long but the feed point will be about 600' from the shack. Is this too long for a beverage and is the feed point a little too far aw
/archives//html/Topband/2009-11/msg00373.html (8,736 bytes)

19. Re: Topband: Shunt fed T (score: 1)
Author: "John G3PQA" <g3pqa@onetel.com>
Date: Mon, 04 Jan 2010 22:02:42 -0800
Could anyone advise me about top loading when 4 wires are use as an alternative to 2 with this type of antenna. My present antenna is 82ft vertical with 4 top lading wires each 35ft long, I have been
/archives//html/Topband/2010-01/msg00053.html (8,018 bytes)

20. Re: Topband: Correlation between AM BCB propagation and topband? (score: 1)
Author: "John G3PQA" <g3pqa@onetel.com>
Date: Tue, 05 Jan 2010 08:26:26 -0800
I am just wondering if any great propagation is currently taking place on 160 meters, if the bands are somehow correlated. Maybe this could be some kind of propagation indicator. Unfortunately, my in
/archives//html/Topband/2010-01/msg00055.html (8,339 bytes)


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