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1. LF: ground conductivity (score: 1)
Author: "Alan Melia" <>
Date: Wed, 9 Jul 2014 14:08:00 +0100
Hi all, it is a while since this came up last, but I am sure I have seen a ground conductivity map for the UK somewhere. Has anyone a reference to it they can give me?? This is a query from a friend
/rsgb_lf_group-archives/html/rsgb_lf_group/2014-07/msg00033.html (8,572 bytes)

2. Re: LF: 474.2 WSPR across the pond (score: 1)
Author: "Alan Melia" <>
Date: Thu, 31 Jul 2014 10:36:10 +0100
Hi John that is interesting because the Sun is relatively quiet as is the Geomagnetic Kp index. The Dst is also quite high (-10nT) indicating firly depleted Ring currents. This doesnt prove anything
/rsgb_lf_group-archives/html/rsgb_lf_group/2014-07/msg00122.html (13,806 bytes)

3. Re: LF: 474.2 WSPR across the pond (score: 1)
Author: "Alan Melia" <>
Date: Sun, 3 Aug 2014 12:51:48 +0100
Hi Roelof it's been very quiet geomagnetically..... the Dst stands at -10nT for several days ....it dipped to about -25nT this morning but is climbing back....I dont expect that to be significant. Al
/rsgb_lf_group-archives/html/rsgb_lf_group/2014-08/msg00019.html (10,700 bytes)

4. LF: Re: ZEVS RX ant question, now success - 60 Hz in Europe (score: 1)
Author: "Alan Melia" <>
Date: Sat, 4 Oct 2014 21:07:50 +0100
Hi Markus there has been a lot of discussion on the time-nuts group on 60Hz frequeny accuracy across the US.. There are web sites which publish plots of the variation. I am afraid
/rsgb_lf_group-archives/html/rsgb_lf_group/2014-10/msg00084.html (15,820 bytes)

5. Re: LF: Re: ZEVS RX ant question, now success - 60 Hz in Europe (score: 1)
Author: "Alan Melia" <>
Date: Sat, 4 Oct 2014 21:26:00 +0100
Hi Markus Ah I though I remembered seeing something ........I think the thread was earlier this year .....Try 60Hz in the search field. They get misty-eyed about Loran too :-)) Alan G3NYK -- Original
/rsgb_lf_group-archives/html/rsgb_lf_group/2014-10/msg00088.html (19,294 bytes)

6. Re: LF: CW 477.7 kHz (score: 1)
Author: "Alan Melia" <>
Date: Sun, 16 Nov 2014 15:06:01 +0100
Hi Roelof, interesting comment...... the Dst has been down in the -40 to -50nT during that period. That level does not usually have a big effect but it is obviously enough to "take the edge off" the
/rsgb_lf_group-archives/html/rsgb_lf_group/2014-11/msg00198.html (12,822 bytes)

7. Re: LF: CW 477.7 kHz (score: 1)
Author: "Alan Melia" <>
Date: Sun, 16 Nov 2014 15:15:11 +0100
Hi Wolf interesting comparision, Joe may be two-hop to J-P but need three-hop to you, We in the UK always used to get East Coast signals stronger than you in Germany. As Roelof indicates there was a
/rsgb_lf_group-archives/html/rsgb_lf_group/2014-11/msg00199.html (11,843 bytes)

8. Re: LF: CW 477.7 kHz (score: 1)
Author: "Alan Melia" <>
Date: Sun, 16 Nov 2014 17:32:12 +0100
Hi Laurence Yes it doesnt look bad enough for a "wipeout" but it certainly seems to depress received levels...more on the higher hop counts. Alan -- Original Message -- From: "Laurence KL7 L" <helloz
/rsgb_lf_group-archives/html/rsgb_lf_group/2014-11/msg00202.html (14,132 bytes)

9. Re: LF: CW 477.7 kHz (score: 1)
Author: "Alan Melia" <>
Date: Sun, 16 Nov 2014 17:54:13 +0100
Hi Roelof, yes the geomagnetic acrivity does tend to peak about 12 to 18 months after the SSN cycle peak. The decay after activity is a diffusion process (concentration driven) so its a bit like disc
/rsgb_lf_group-archives/html/rsgb_lf_group/2014-11/msg00203.html (13,963 bytes)

10. Re: LF: Alert CFS NDB (score: 1)
Author: "Alan Melia" <>
Date: Sat, 29 Nov 2014 00:26:05 +0100
Hi Roelof, at night that is probably two hop for the main path though there will be some one-hop in the mix. Max LF/MF range upper D-region/lower E-region say 100km altitude is about 2500km by simple
/rsgb_lf_group-archives/html/rsgb_lf_group/2014-11/msg00302.html (14,822 bytes)

11. Re: LF: Alert CFS NDB (score: 1)
Author: "Alan Melia" <>
Date: Sun, 30 Nov 2014 22:09:13 +0100
-- Original Message -- From: Roelof Bakker To: Sent: Sunday, November 30, 2014 8:23 PM Subject: Re: LF: Alert CFS NDB Hel
/rsgb_lf_group-archives/html/rsgb_lf_group/2014-11/msg00345.html (13,823 bytes)

12. Re: LF: Alert CFS NDB (score: 1)
Author: "Alan Melia" <>
Date: Sun, 30 Nov 2014 22:09:16 +0100
Hi Roelof, I had not registered the time.....it is possible that two hop and the one hop (which is possible, the range is extended by diffraction/scatter at the ends, so somewhat attenuated) may be i
/rsgb_lf_group-archives/html/rsgb_lf_group/2014-11/msg00346.html (16,001 bytes)

13. LF: Re: DCF39 propagation (score: 1)
Author: "Alan Melia" <>
Date: Fri, 12 Dec 2014 02:23:38 +0100
Hi Edgar nothing out of the ordinary Noaa have updated the web site Start here http://www.swpc.noaa.gov/ Alan G3NYK -- Original Message -- From: edgar To: rsgb_lf
/rsgb_lf_group-archives/html/rsgb_lf_group/2014-12/msg00102.html (10,759 bytes)

14. Re: LF: Re: DCF39 propagation (score: 1)
Author: "Alan Melia" <>
Date: Fri, 12 Dec 2014 12:47:08 +0100
Hi Edgar this is alwaysa difficult call, unless you have some form of signal in the waterfall that is really constant and able to be used as a "calibration"/confidence boost. I remember collecing dat
/rsgb_lf_group-archives/html/rsgb_lf_group/2014-12/msg00108.html (11,060 bytes)

15. LF: Antenna Current meters (score: 1)
Author: "Alan Melia" <>
Date: Sun, 14 Dec 2014 17:38:44 +0100
Hi all there has been discussion about Aerial Current measurement on many occassions in the past, and many have built versions of the "Clothes Peg" clip on ammeter. Dave Powis G4HUP announced a kit f
/rsgb_lf_group-archives/html/rsgb_lf_group/2014-12/msg00133.html (9,945 bytes)

16. LF: Re: Noisy Earth mat...? (score: 1)
Author: "Alan Melia" <>
Date: Mon, 15 Dec 2014 01:17:18 +0100
Hi Laurence.....a bit odd ?? I presume your ground is frozen hard now so winter ground loss. Just a silly thought I wonder because a lot of your noise is from 30 to 50km if the mat is reflecting nois
/rsgb_lf_group-archives/html/rsgb_lf_group/2014-12/msg00138.html (11,581 bytes)

17. Re: LF: Re: Noisy Earth mat...? (score: 1)
Author: "Alan Melia" <>
Date: Mon, 15 Dec 2014 01:36:23 +0100
Hi Laurence I was musing that the moving auroral fields would induce circulating currents in the closed loops of the mesh ......(that is after a small tot of Asbach in my bedtime hot chocky !!) and m
/rsgb_lf_group-archives/html/rsgb_lf_group/2014-12/msg00140.html (14,625 bytes)

18. Re: LF: Closure of German Longwave Broadcast (score: 1)
Author: "Alan Melia" <>
Date: Wed, 31 Dec 2014 21:57:35 +0100
Sadly it is all about money these facilities are expensive to run. Mast maintenance and insurance for LF alone is frightening without the electricity bill, and the value of the real estate. There was
/rsgb_lf_group-archives/html/rsgb_lf_group/2014-12/msg00327.html (16,138 bytes)

19. LF: Re: Transatlantic messages at 8822Hz (score: 1)
Author: "Alan Melia" <>
Date: Sun, 04 Jan 2015 15:41:27 +0100
Hi Paul and Dex Great work, well done!! It is nice to see that the frequency will carry information rather than just allow identifiction. Best wishes Alan G3NYK W4DEX achieved another 'first' recentl
/rsgb_lf_group-archives/html/rsgb_lf_group/2015-01/msg00098.html (12,369 bytes)

20. LF: Re: 23:50 136 VE7BDQ de WG2XSV Op32 767 mi -24 dB (score: 1)
Author: "Alan Melia" <>
Date: Mon, 05 Jan 2015 01:58:40 +0100
Hi Graham I doubt the greyline has much to do with it. The ionosphere at 50km is prob still illuminated but only by a weak winter sun.and 760mile is a short hop (~1000km) quite possible for daytime.
/rsgb_lf_group-archives/html/rsgb_lf_group/2015-01/msg00118.html (14,294 bytes)


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