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References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*LF\:\s+LF\s+antennas\s*$/: 20 ]

Total 20 documents matching your query.

1. LF: LF antennas (score: 1)
Author: "mal hamilton" <>
Date: Sat, 1 Jun 2013 16:12:42 +0100
LF Just refurbished all LF antennas and tested. All working FB Will be testing on 136.6 CW later on if anyone is about for a QSO. Also QRV on 472.5 CW DE MAL/G3KEV
/rsgb_lf_group-archives/html/rsgb_lf_group/2013-06/msg00353.html (7,985 bytes)

2. Re: LF: LF Antennas (score: 1)
Author: "boffin1" <>
Date: Wed, 11 Apr 2001 16:27:22 -0400
Mike, Sorry for a misunderstanding. If all that concerns you is matching then it does not matter if there is a ferrite core or no ferrite core, but if you are also interested in getting greater effic
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-04/msg00236.html (9,116 bytes)

3. Re: LF: LF Antennas (score: 1)
Author: "Rik Strobbe" <>
Date: Mon, 09 Apr 2001 16:03:41
Hi Mike, Have a look at : http://www.wireless.org.uk/dk5pt-f.htm It shows a very small loading coil (using a pot core) made by DK5PT. 73, Rik ON7YD Just to clarify, the problem I am trying to fix is
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-04/msg00270.html (10,318 bytes)

4. Re: LF: LF Antennas (score: 1)
Author: "Mike Dennison" <>
Date: Mon, 9 Apr 2001 15:03:12 +0100
I replied: ON7YD wrote: I'm using a loading coil with ferrite rod for 'fine tuning' the antenna (I can slide the rod in/out the coil). Without rod the coil is 700uH, with the rod I can tune it from
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-04/msg00271.html (13,395 bytes)

5. Re: LF: LF Antennas (score: 1)
Author: "Rik Strobbe" <>
Date: Mon, 09 Apr 2001 10:52:59
If you load it with ferrite you will certainly increase its inductance and also its efficacy as a receiving antenna but the radiation efficiency on tx will decrease accordingly (the difference betwe
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-04/msg00273.html (11,007 bytes)

6. Re: LF: LF Antennas (score: 1)
Author: "Mike Dennison" <>
Date: Mon, 9 Apr 2001 09:46:16 +0100
If you load it with ferrite you will certainly increase its inductance and also its efficacy as a receiving antenna but the radiation efficiency on tx will decrease accordingly (the difference betwee
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-04/msg00274.html (9,455 bytes)

7. Re: LF: LF Antennas (score: 1)
Author: "boffin1" <>
Date: Sun, 8 Apr 2001 06:15:27 -0400
Mike, If you load it with ferrite you will certainly increase its inductance and also its efficacy as a receiving antenna but the radiation efficiency on tx will decrease accordingly (the difference
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-04/msg00282.html (8,877 bytes)

8. LF: LF Antennas (score: 1)
Author: "boffin1" <>
Date: Thu, 5 Apr 2001 14:53:01 -0500
Peter, (quietly) Vector potential ! Regards, Roger.
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-04/msg00302.html (8,677 bytes)

9. Re: LF: LF Antennas (score: 1)
Author: "Tom Boucher" <>
Date: Thu, 5 Apr 2001 10:34:25 +0100
Regarding the use of a high loading coil, Mike (XDV) comments: It all gets back to the lessons we learned a long time ago about 160 metre mobile antennas. Get the loading coil above the roof of the
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-04/msg00306.html (9,536 bytes)

10. Re: LF: LF Antennas (score: 1)
Author: "g3ldo" <>
Date: Thu, 5 Apr 2001 10:16:41 +0100
Our experiences seem to confirm that this sort of size (i.e. of the order of a couple of metres in diameter) and particularly the use of low resistance Litz is optimum. The number of turns is 10 in
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-04/msg00308.html (10,799 bytes)

11. Re: LF: LF Antennas (score: 1)
Author: "Mike Dennison" <>
Date: Thu, 5 Apr 2001 09:41:17 +0100
Regarding the use of a high loading coil, Mike (XDV) comments: part beyond the coil is quite antenna with substantial large inductance Perhaps I have misunderstood your point Mike, but this sounds w
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-04/msg00309.html (12,245 bytes)

12. Re: LF: LF Antennas (score: 1)
Author: "john sexton" <>
Date: Wed, 4 Apr 2001 12:49:32 -0700 (PDT)
Hi Peter, hi All, I was particularly interested to read about Peter's new receive loop, which shares several features with the loop that I built, primarily its size and the use of thick Litz wire. Li
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-04/msg00311.html (12,127 bytes)

13. Re: LF: LF Antennas (score: 1)
Author: "john sexton" <>
Date: Wed, 4 Apr 2001 12:47:52 -0700 (PDT)
Hi Peter, hi All, I was particularly interested to read about Peter's new receive loop, which shares several features with the loop that I built, primarily its size and the use of thick Litz wire. Li
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-04/msg00312.html (12,077 bytes)

14. Re: LF: LF Antennas (score: 1)
Author: "Mike Dennison" <>
Date: Wed, 4 Apr 2001 10:22:21 +0100
G3LDO wrote: In an attempt to improve the reception on 136kHz by cutting down the Loran racket I have, over a period of time, been experimenting with LF receiving loops. I now have one that works rea
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-04/msg00317.html (11,010 bytes)

15. LF: LF Antennas (score: 1)
Author: "g3ldo" <>
Date: Tue, 3 Apr 2001 23:09:02 +0100
In an attempt to improve the reception on 136kHz by cutting down the Loran racket I have, over a period of time, been experimenting with LF receiving loops. I now have one that works really well. It
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-04/msg00319.html (9,386 bytes)

16. LF: LF antennas (score: 1)
Author: "'Geri' Kinzel, DK8KW" <>
Date: Mon, 28 May 2001 00:38:26 -0400
Walter, I thought some of his remarks might strike a chord with this Group. See for yourselves!!!< ... thanks for publishing this, indeed, it reminds me of a lot of the experiments we are carrying ou
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-05/msg00053.html (8,210 bytes)

17. LF: LF antennas (score: 1)
Author: "Walter Blanchard" <>
Date: Sun, 27 May 2001 23:39:28 +0100
I've recently been editing the memoirs of Dr. J. A. Pierce, an American engineer who was responsible for much of the design work on the Omega and Loran-C navigation systems and I thought some of his
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-05/msg00054.html (19,020 bytes)

18. LF: LF Antennas (score: 1)
Author: "g3ldo" <>
Date: Mon, 17 Sep 2001 00:56:39 +0100
It seems a long time since I wrote to this reflector. I have been reading the mail but have been rather busy. I have just sent off all the chapter of a new book on Mobile radio. This turned out to be
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-09/msg00098.html (8,859 bytes)

19. LF: LF Antennas (score: 1)
Author: "g3ldo" <>
Date: Wed, 22 Jan 2003 00:46:29 +0100
During this very wet spell I noticed that the total antenna resistance has gone up - probably due to environmental losses. The daily cycling of antenna resistance does not seem so bad on 136kHz as on
/rsgb_lf_group-archives/html/rsgb_lf_group/2003-01/msg00039.html (9,079 bytes)

20. LF: LF Antennas (score: 1)
Author: "g3ldo" <>
Date: Thu, 3 Jul 2003 11:14:52 +0100
John, W1TAG said: -- It is occasionally useful to suggest to the newer readers of this reflector that despite the advice given by G3KEV, significant fun and useful knowledge may be had by LF experime
/rsgb_lf_group-archives/html/rsgb_lf_group/2003-07/msg00190.html (10,273 bytes)


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