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References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*LF\:\s+A\s+question\s+about\s+loops\s+for\s+136\s+and\s+500kHz\s+TX\s*$/: 6 ]

Total 6 documents matching your query.

1. Re: LF: A question about loops for 136 and 500kHz TX (score: 1)
Author: Warren Ziegler <[email protected]>
Date: Fri, 13 Aug 2010 11:23:11 -0400
My question is this. Is there any reason why the bottom of the loop cannot be laid along the ground rather than elevated a few metres? Most designs show the bottom elevated a bit, but if laid on the
/rsgb_lf_group-archives/html/rsgb_lf_group/2010-08/msg00254.html (13,721 bytes)

2. Re: LF: A question about loops for 136 and 500kHz TX (score: 1)
Author: Roger Lapthorn <[email protected]>
Date: Fri, 13 Aug 2010 16:53:07 +0100
http://www.we0h.us/page3.html#S301%22 Your actual feedpoint impedance will probably differ, but the program allows you to play with various options in advance, perhaps saving some money, and certainl
/rsgb_lf_group-archives/html/rsgb_lf_group/2010-08/msg00547.html (14,900 bytes)

3. Re: LF: A question about loops for 136 and 500kHz TX (score: 1)
Author: Mike-WE0H <[email protected]>
Date: Tue, 17 Aug 2010 19:33:05 -0500
I forgot I had his site mirrored. hi hi...Good to see it works. Mike-WE0H EN35hj PB237 Even in an area with very poor ground conductivity (such as mine), environmental losses will be reduced by eleva
/rsgb_lf_group-archives/html/rsgb_lf_group/2010-08/msg00558.html (10,901 bytes)

4. Re: LF: A question about loops for 136 and 500kHz TX (score: 1)
Author: John Andrews <[email protected]>
Date: Fri, 13 Aug 2010 11:38:15 -0400
Roger, Even in an area with very poor ground conductivity (such as mine), environmental losses will be reduced by elevating the lower conductor. I would suggest 2-3 meters as a minimum. In general, l
/rsgb_lf_group-archives/html/rsgb_lf_group/2010-08/msg00592.html (12,112 bytes)

5. RE: LF: A question about loops for 136 and 500kHz TX (score: 1)
Author: Laurence KL7UK <[email protected]>
Date: Fri, 13 Aug 2010 08:11:20 -0800
Got to say Id keep it off and away from any earthed or partially losses object as it does affect the Q etc, and if the fence gets wet it will detune more - 8ft was the minimum height I used - just ou
/rsgb_lf_group-archives/html/rsgb_lf_group/2010-08/msg00707.html (11,954 bytes)

6. LF: A question about loops for 136 and 500kHz TX (score: 1)
Author: Roger Lapthorn <[email protected]>
Date: Fri, 13 Aug 2010 16:08:59 +0100
Having considered the antenna options for my small garden, I'm going to erect a TX loop antenna rather than a Marconi vertical for 136kHz: the earthing issues are removed and it is easier to build a
/rsgb_lf_group-archives/html/rsgb_lf_group/2010-08/msg00739.html (11,447 bytes)


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