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1. Topband: Europe-western N. America openings? (score: 1)
Author: nhp@ieee.org (Nick Hall-Patch)
Date: Thu, 26 Sep 2002 22:32:45 -0700
Several west coast medium wave DXers have heard European broadcast band signals during the evenings (local time) of 23 and 25 September. Anybody on the coast working Europe on topband? best wishes, N
/archives//html/Topband/2002-09/msg00195.html (7,594 bytes)

2. Topband: beacon (score: 1)
Author: nhp@ieee.org (Nick Hall-Patch)
Date: Fri, 12 Apr 2002 23:35:25 -0700
I will have a beacon running on 1998.5 kHz from 0245 to 0330 UTC 14 April as part of a propagation experiment with VE3OSZ in Ontario. So far he has not been able to hear me due to a combination of no
/archives//html/Topband/2002-04/msg00019.html (6,787 bytes)

3. Topband: beverage above water (score: 1)
Author: nhp@ieee.org (Nick Hall-Patch)
Date: Mon, 18 Mar 2002 09:44:58 -0800
I've used medium wave Beverages (partially) over Pacific Ocean salt water, and heard plenty of DX. There was no scientific comparison made by putting up a nearby Beverage over poor ground, as this wa
/archives//html/Topband/2002-03/msg00172.html (9,416 bytes)

4. Topband: One Way Propagation (score: 1)
Author: nhp@ieee.org (Nick Hall-Patch)
Date: Thu, 14 Feb 2002 20:26:06 -0800
I was waiting for other replies about this, but have seen none, so here is the 2 cents worth: the horizon radar sees a strong reflection from seas with the same wavelength as the transmitted signal,
/archives//html/Topband/2002-02/msg00089.html (7,359 bytes)

5. Topband: One way propogation or QRM? (score: 1)
Author: nhp@ieee.org (Nick Hall-Patch)
Date: Mon, 28 Jan 2002 22:20:44 -0800
try < dark/light Larry and the group, QEX published an article in July-August 2001 on MF pre-sunrise enhancements which concentrated on the reception of a medium wave broadcaster from South Korea ove
/archives//html/Topband/2002-01/msg00241.html (9,722 bytes)

6. Topband: RF resistance of wire (score: 1)
Author: nhp@ieee.org (Nick Hall-Patch)
Date: Wed, 01 Aug 2001 21:52:01 -0700
At 01:32 AM 8/1/01 -0400, David K3KY wrote: Some years ago, I was winding iron core toroids for the tuned front end of a homebrew medium wave receiver, and found that magnet wire gave a better Q in t
/archives//html/Topband/2001-08/msg00008.html (7,233 bytes)

7. Topband: signal peaking two hours before sunrise (score: 1)
Author: nhp@ieee.org (Nick Hall-Patch)
Date: Sun, 14 Jan 2001 10:23:59 -0800
The two stations monitored are HLAZ-1566 from Cheju Island, S. Korea and 4QD-1548 from Emerald, Queensland, Australia. The analysis is queered by the fact that HLAZ beams its signal towards here from
/archives//html/Topband/2001-01/msg00145.html (9,001 bytes)

8. Topband: Re: northerly paths (score: 1)
Author: nhp@ieee.org (Nick Hall-Patch)
Date: Fri, 17 Nov 2000 12:04:43 -0800
With the low A-indices of the last few days, we might want to be checking those northerly paths a bit more. The upper part of the medium wave band has shown quite a few 9 kHz carriers here in southwe
/archives//html/Topband/2000-11/msg00093.html (6,805 bytes)

9. Topband: Geomag-param-frm OX and TF (score: 1)
Author: nhp@ieee.org (Nick Hall-Patch)
Date: Sun, 07 Nov 1999 22:27:02 -0800
BAA19878 Have you looked at http://www.intermagnet.org/english/toc_e.html ? Sender: owner-topband@contesting.com Precedence: bulk X-List-Info: http://www.contesting.com/topband.html X-Sponsor: W4AN,
/archives//html/Topband/1999-11/msg00051.html (9,041 bytes)

10. Topband: Geomag. param.high.lat. (score: 1)
Author: nhp@ieee.org (Nick Hall-Patch)
Date: Fri, 22 Oct 1999 23:00:16 -0700
This is part of an interesting site, which I have not investigated thoroughly. Perhaps a look here would be worthwhile. http://www.geolab.nrcan.gc.ca/geomag/e_digdat.html best wishes, Nick VE7DXR --
/archives//html/Topband/1999-10/msg00149.html (7,112 bytes)

11. Re: Topband: measuring transformer core inductance (score: 1)
Author: Nick Hall-Patch <nhp@ieee.org>
Date: Thu, 13 Nov 2003 23:53:34 -0800
At 05:36 PM 11/13/03, Steve KK7UV wrote: I picked up an LCR meter for the main purpose of winding transformers and being able to nail down the actual inductance and transformation ratios. The meter w
/archives//html/Topband/2003-11/msg00106.html (9,256 bytes)

12. Topband: DXAid (score: 1)
Author: Nick Hall-Patch <nhp@ieee.org>
Date: Sun, 16 Nov 2003 00:21:14 -0800
Does anyone know if the "DXAid" program is still available? I'm updating a list for a MW DX club, but haven't got a working e-mail address for Peter Oldfield to ask him... Thanks, Nick ______________
/archives//html/Topband/2003-11/msg00115.html (6,218 bytes)

13. RE: Topband: DXAid (score: 1)
Author: Nick Hall-Patch <nhp@ieee.org>
Date: Mon, 17 Nov 2003 21:00:32 -0800
Thank you to all who replied both on and off list. Peter has moved from Quebec apparently, and I haven't yet got a reply from his new address. Once I do, I'll pass it on to Bill. best wishes, Nick VE
/archives//html/Topband/2003-11/msg00126.html (8,324 bytes)

14. Re: Topband: Two Wire Beverage Query... (score: 1)
Author: Nick Hall-Patch <nhp@ieee.org>
Date: Tue, 24 Aug 2004 04:18:13 +0000
At 07:51 PM 20/08/2005, Tom Rauch wrote: It seems to me that I've seen some discussion about running a wire on the ground along the length of a beverage to connect the grounds between the feedpoint a
/archives//html/Topband/2004-08/msg00056.html (11,181 bytes)

15. Re: Topband: Spotlight Effect (score: 1)
Author: Nick Hall-Patch <nhp@ieee.org>
Date: Mon, 03 Jan 2005 22:14:23 -0800
At 14:53 03/01/2005, NM7M wrote: Friends in Radio Land, Those interested in the "spotlight effect" would do well to read the work on dawn enhancements by Nick, VE7DXR, and Bob, VE3OSZ, in the Novembe
/archives//html/Topband/2005-01/msg00048.html (8,263 bytes)

16. Re: Topband: Gamma ray bursts (score: 1)
Author: Nick Hall-Patch <nhp@ieee.org>
Date: Wed, 05 Jan 2005 21:49:23 -0800
At 16:08 05/01/2005, K9LA wrote: W4ZV's posting about GRBs reminded me of the one back in 1998 that was caught on record on a VLF path. Don't know how much it affected 160m, but it sure affected VLF.
/archives//html/Topband/2005-01/msg00072.html (6,988 bytes)

17. Re: Topband: Evaluating Rx antennas with Spectran (score: 1)
Author: Nick Hall-Patch <nhp@ieee.org>
Date: Fri, 14 Apr 2006 05:29:13 +0000
I'm sorry for the late reply, Luis, have just been checking my backlog of mail. I don't have too much problem here with daytime signal variability on BC stations using Spectran (version 2, build 213)
/archives//html/Topband/2006-04/msg00032.html (8,148 bytes)

18. Re: Topband: Soldering ground radials (score: 1)
Author: Nick Hall-Patch <nhp@ieee.org>
Date: Tue, 19 Dec 2006 05:39:30 +0000
Does anyone know what this "white powder" is, and why soldered connections seem prone to it in moist atmospheres? I've just opened up the transformer box for one of my Flag antennas, and although the
/archives//html/Topband/2006-12/msg00181.html (8,520 bytes)

19. Re: Topband: Moon and the Ionosphere : YO3FFF (score: 1)
Author: Nick Hall-Patch <nhp@ieee.org>
Date: Sat, 17 Mar 2007 06:46:21 +0000
Barring disaster, Cris, a MW broadcaster's signal should be very predictable, as their pattern and power is a condition of their licence, and in many parts of the world, the information is in the pub
/archives//html/Topband/2007-03/msg00066.html (10,174 bytes)

20. Re: Topband: Moon and the Ionosphere : YO3FFF (score: 1)
Author: Nick Hall-Patch <nhp@ieee.org>
Date: Sat, 17 Mar 2007 20:55:52 +0000
I'm not sure how badly I want to display the gaps in my knowledge about this problem to those on the list, Tom! My feeling is that the least of the worries is automated recording of signal strength;
/archives//html/Topband/2007-03/msg00072.html (10,179 bytes)


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