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References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*LF\:\s+Loop\s+conundrum\s*$/: 9 ]

Total 9 documents matching your query.

1. LF: Loop Conundrum (score: 1)
Author: "Andy Talbot" <>
Date: Mon, 21 Jul 2008 12:29:33 +0100
Was pondering this while out walking the other day, and couldn't come to a satisfactory conclusion either way... A small magnetic loop mounted vertically has a defined radiation resistance that is a
/rsgb_lf_group-archives/html/rsgb_lf_group/2008-07/msg00026.html (11,550 bytes)

2. Re: LF: Loop Conundrum (score: 1)
Author: John Andrews <>
Date: Mon, 21 Jul 2008 09:12:43 -0400
Andy, Better yet, take a soccer ball and start winding wire around it until you have completed a 90 degree arc on both sides. What's the resulting pattern? John Andrews, W1TAG
/rsgb_lf_group-archives/html/rsgb_lf_group/2008-07/msg00039.html (9,604 bytes)

3. Re: LF: Loop Conundrum (score: 1)
Author:
Date: 21 Jul 2008 11:54 GMT
Dear Andy, I guess these two loops should be fed by two rf signals of 90 degrees phase difference to become really omnidirectional. The same is true in receiving. The two signals from the loops have
/rsgb_lf_group-archives/html/rsgb_lf_group/2008-07/msg00086.html (11,692 bytes)

4. Re: LF: Loop Conundrum (score: 1)
Author: "Alan Melia" <>
Date: Mon, 21 Jul 2008 14:43:47 +0100
Gosh are you guys getting civilised at last, to recognise a spherical football <g> Ok course one would have make corrections for the "Beckham Effect" ! Alan G3NYK
/rsgb_lf_group-archives/html/rsgb_lf_group/2008-07/msg00102.html (10,641 bytes)

5. Re: LF: Loop Conundrum (score: 1)
Author: Marco IK1ODO -2 <>
Date: Mon, 21 Jul 2008 14:07:53 +0200
A small magnetic loop mounted vertically has a defined radiation resistance that is a function of its diameter, a loss that is function of its conductor and hence a loss or efficiency that is the rat
/rsgb_lf_group-archives/html/rsgb_lf_group/2008-07/msg00106.html (11,278 bytes)

6. LF: Loop conundrum (score: 1)
Author: "Andy Talbot" <>
Date: Fri, 25 Jul 2008 08:49:37 +0100
Tnx for the replies on this. In the original post I'd forgotton that Chu-Harrington described a sphere just sufficient to enclose the antenna, so a pair od crossed loops would fit into the same size
/rsgb_lf_group-archives/html/rsgb_lf_group/2008-07/msg00118.html (10,968 bytes)

7. Re: LF: Loop Conundrum (score: 1)
Author:
Date: Mon, 21 Jul 2008 10:57:17 -0400
I think, Alan, that to achieve the "Beckham" effect would require that you arrange for the resulting radiation pattern to achieve a "curve" in the general direction of the beam pattern and it will pr
/rsgb_lf_group-archives/html/rsgb_lf_group/2008-07/msg00119.html (11,387 bytes)

8. Re: LF: Loop Conundrum (score: 1)
Author: Rik Strobbe <>
Date: Mon, 21 Jul 2008 14:41:14 +0200
Was pondering this while out walking the other day, and couldn't come to a satisfactory conclusion either way... A small magnetic loop mounted vertically has a defined radiation resistance that is a
/rsgb_lf_group-archives/html/rsgb_lf_group/2008-07/msg00123.html (11,946 bytes)

9. RE: LF: Loop Conundrum (score: 1)
Author: "Chris Trayner" <>
Date: Mon, 21 Jul 2008 14:28:45 +0100
you have completed a 90 degree arc on both sides. What's the resulting pattern? I'd guess the sum of all the individual loops, which should be in their average direction, i.e. with the flux coming o
/rsgb_lf_group-archives/html/rsgb_lf_group/2008-07/msg00134.html (9,856 bytes)


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