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Groups > sci.electronics.design > #451909 > unrolled thread
| Started by | "billbowden" <bperryb@bowdenshobbycircuits.info> |
|---|---|
| First post | 2017-03-14 20:18 -0800 |
| Last post | 2017-03-24 21:35 +0200 |
| Articles | 20 on this page of 301 — 34 participants |
Back to article view | Back to sci.electronics.design
Antenna ferrite loopsticks verses air core? "billbowden" <bperryb@bowdenshobbycircuits.info> - 2017-03-14 20:18 -0800
Re: Antenna ferrite loopsticks verses air core? John Robertson <spam@flippers.com> - 2017-03-14 22:21 -0700
Re: Antenna ferrite loopsticks verses air core? Phil Allison <pallison49@gmail.com> - 2017-03-14 23:43 -0700
Re: Antenna ferrite loopsticks verses air core? "billbowden" <bperryb@bowdenshobbycircuits.info> - 2017-03-15 12:27 -0800
Re: Antenna ferrite loopsticks verses air core? Phil Allison <pallison49@gmail.com> - 2017-03-15 17:19 -0700
Re: Antenna ferrite loopsticks verses air core? "billbowden" <bperryb@bowdenshobbycircuits.info> - 2017-03-15 18:51 -0800
Re: Antenna ferrite loopsticks verses air core? Phil Allison <pallison49@gmail.com> - 2017-03-15 20:08 -0700
Re: Antenna ferrite loopsticks verses air core? rickman <gnuarm@gmail.com> - 2017-03-16 00:24 -0400
Re: Antenna ferrite loopsticks verses air core? Phil Allison <pallison49@gmail.com> - 2017-03-15 22:17 -0700
Re: Antenna ferrite loopsticks verses air core? amdx <nojunk@knology.net> - 2017-03-16 13:04 -0500
Re: Antenna ferrite loopsticks verses air core? rickman <gnuarm@gmail.com> - 2017-03-15 02:48 -0400
Re: Antenna ferrite loopsticks verses air core? makolber@yahoo.com - 2017-03-15 06:35 -0700
Re: Antenna ferrite loopsticks verses air core? "billbowden" <bperryb@bowdenshobbycircuits.info> - 2017-03-15 12:46 -0800
Re: Antenna ferrite loopsticks verses air core? Phil Allison <pallison49@gmail.com> - 2017-03-15 17:22 -0700
Re: Antenna ferrite loopsticks verses air core? Mike Perkins <spam@spam.com> - 2017-03-30 01:42 +0100
Re: Antenna ferrite loopsticks verses air core? Phil Allison <pallison49@gmail.com> - 2017-03-29 18:20 -0700
Re: Antenna ferrite loopsticks verses air core? upsidedown@downunder.com - 2017-03-16 08:44 +0200
Re: Antenna ferrite loopsticks verses air core? Phil Allison <pallison49@gmail.com> - 2017-03-16 00:17 -0700
Re: Antenna ferrite loopsticks verses air core? upsidedown@downunder.com - 2017-03-17 00:58 +0200
Re: Antenna ferrite loopsticks verses air core? Phil Allison <pallison49@gmail.com> - 2017-03-16 16:19 -0700
Re: Antenna ferrite loopsticks verses air core? "billbowden" <bperryb@bowdenshobbycircuits.info> - 2017-03-15 13:01 -0800
Re: Antenna ferrite loopsticks verses air core? rickman <gnuarm@gmail.com> - 2017-03-15 17:39 -0400
Re: Antenna ferrite loopsticks verses air core? Phil Allison <pallison49@gmail.com> - 2017-03-15 17:33 -0700
Re: Antenna ferrite loopsticks verses air core? "Dave M" <dgminala@mediacombb.net> - 2017-03-15 09:40 -0500
Re: Antenna ferrite loopsticks verses air core? Phil Allison <pallison49@gmail.com> - 2017-03-15 17:26 -0700
Re: Antenna ferrite loopsticks verses air core? John Larkin <jjlarkin@highlandtechnology.com> - 2017-03-15 08:25 -0700
Re: Antenna ferrite loopsticks verses air core? Tim Wescott <seemywebsite@myfooter.really> - 2017-03-15 12:38 -0500
Re: Antenna ferrite loopsticks verses air core? Phil Allison <pallison49@gmail.com> - 2017-03-15 17:28 -0700
Re: Antenna ferrite loopsticks verses air core? John Larkin <jjlarkinxyxy@highlandtechnology.com> - 2017-03-15 17:59 -0700
Re: Antenna ferrite loopsticks verses air core? Phil Allison <pallison49@gmail.com> - 2017-03-15 18:10 -0700
Re: Antenna ferrite loopsticks verses air core? John Larkin <jjlarkin@highlandtechnology.com> - 2017-03-16 08:20 -0700
Re: Antenna ferrite loopsticks verses air core? George Herold <gherold@teachspin.com> - 2017-03-16 09:45 -0700
Re: Antenna ferrite loopsticks verses air core? John Larkin <jjlarkinxyxy@highlandtechnology.com> - 2017-03-16 10:26 -0700
Re: Antenna ferrite loopsticks verses air core? Phil Allison <pallison49@gmail.com> - 2017-03-16 15:47 -0700
Re: Antenna ferrite loopsticks verses air core? George Herold <gherold@teachspin.com> - 2017-03-16 17:15 -0700
Re: Antenna ferrite loopsticks verses air core? Phil Allison <pallison49@gmail.com> - 2017-03-16 17:36 -0700
Re: Antenna ferrite loopsticks verses air core? George Herold <gherold@teachspin.com> - 2017-03-16 18:46 -0700
Re: Antenna ferrite loopsticks verses air core? Phil Allison <pallison49@gmail.com> - 2017-03-16 23:45 -0700
Re: Antenna ferrite loopsticks verses air core? John Larkin <jjlarkin@highlandtechnology.com> - 2017-03-17 07:30 -0700
Re: Antenna ferrite loopsticks verses air core? George Herold <gherold@teachspin.com> - 2017-03-17 08:28 -0700
Re: Antenna ferrite loopsticks verses air core? Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> - 2017-03-17 11:38 -0400
Re: Antenna ferrite loopsticks verses air core? John Larkin <jjlarkinxyxy@highlandtechnology.com> - 2017-03-17 12:21 -0700
Re: Antenna ferrite loopsticks verses air core? "billbowden" <bperryb@bowdenshobbycircuits.info> - 2017-03-17 13:08 -0800
Re: Antenna ferrite loopsticks verses air core? Clifford Heath <no.spam@please.net> - 2017-03-18 10:32 +1100
Re: Antenna ferrite loopsticks verses air core? John Larkin <jjlarkinxyxy@highlandtechnology.com> - 2017-03-17 17:10 -0700
Re: Antenna ferrite loopsticks verses air core? rickman <gnuarm@gmail.com> - 2017-03-17 22:31 -0400
Re: Antenna ferrite loopsticks verses air core? pcdhobbs@gmail.com - 2017-03-18 14:53 -0700
Re: Antenna ferrite loopsticks verses air core? rickman <gnuarm@gmail.com> - 2017-03-18 20:38 -0400
Re: Antenna ferrite loopsticks verses air core? Jeff Liebermann <jeffl@cruzio.com> - 2017-03-18 18:10 -0700
Re: Antenna ferrite loopsticks verses air core? pcdhobbs@gmail.com - 2017-03-18 18:39 -0700
Re: Antenna ferrite loopsticks verses air core? Jeff Liebermann <jeffl@cruzio.com> - 2017-03-19 09:53 -0700
Re: Antenna ferrite loopsticks verses air core? Clifford Heath <no.spam@please.net> - 2017-03-19 12:27 +1100
Re: Antenna ferrite loopsticks verses air core? rickman <gnuarm@gmail.com> - 2017-03-18 22:11 -0400
Re: Antenna ferrite loopsticks verses air core? "Tim Williams" <tiwill@seventransistorlabs.com> - 2017-03-19 10:41 -0500
Re: Antenna ferrite loopsticks verses air core? dagmargoodboat@yahoo.com - 2017-03-17 17:13 -0700
Re: Antenna ferrite loopsticks verses air core? John Larkin <jjlarkinxyxy@highlandtechnology.com> - 2017-03-17 17:28 -0700
Re: Antenna ferrite loopsticks verses air core? Tauno Voipio <tauno.voipio@notused.fi.invalid> - 2017-03-18 12:21 +0200
Re: Antenna ferrite loopsticks verses air core? Allan Herriman <allanherriman@hotmail.com> - 2017-03-18 12:15 +0000
Re: Antenna ferrite loopsticks verses air core? George Herold <gherold@teachspin.com> - 2017-03-17 17:36 -0700
Re: Antenna ferrite loopsticks verses air core? dagmargoodboat@yahoo.com - 2017-03-17 18:09 -0700
Re: Antenna ferrite loopsticks verses air core? George Herold <gherold@teachspin.com> - 2017-03-17 18:21 -0700
Re: Antenna ferrite loopsticks verses air core? upsidedown@downunder.com - 2017-03-18 10:49 +0200
Re: Antenna ferrite loopsticks verses air core? John Larkin <jjlarkin@highlandtechnology.com> - 2017-03-18 08:30 -0700
Re: Antenna ferrite loopsticks verses air core? mkolber1@gmail.com - 2017-03-18 12:49 -0700
Re: Antenna ferrite loopsticks verses air core? John Larkin <jjlarkin@highlandtechnology.com> - 2017-03-18 12:57 -0700
Re: Antenna ferrite loopsticks verses air core? upsidedown@downunder.com - 2017-03-18 23:48 +0200
Re: Antenna ferrite loopsticks verses air core? krw@notreal.com - 2017-03-18 20:08 -0400
Re: Antenna ferrite loopsticks verses air core? kevin93 <kevin@whitedigs.com> - 2017-03-18 13:09 -0700
Re: Antenna ferrite loopsticks verses air core? "Tim Williams" <tiwill@seventransistorlabs.com> - 2017-03-18 04:08 -0500
Re: Antenna ferrite loopsticks verses air core? Clifford Heath <no.spam@please.net> - 2017-03-19 12:32 +1100
Re: Antenna ferrite loopsticks verses air core? "Tim Williams" <tiwill@seventransistorlabs.com> - 2017-03-19 10:45 -0500
Re: Antenna ferrite loopsticks verses air core? Clifford Heath <no.spam@please.net> - 2017-03-20 11:08 +1100
Re: Antenna ferrite loopsticks verses air core? "Tim Williams" <tiwill@seventransistorlabs.com> - 2017-03-19 22:31 -0500
Re: Antenna ferrite loopsticks verses air core? Clifford Heath <no.spam@please.net> - 2017-03-20 16:31 +1100
Re: Antenna ferrite loopsticks verses air core? "Tim Williams" <tiwill@seventransistorlabs.com> - 2017-03-21 01:19 -0500
Re: Antenna ferrite loopsticks verses air core? Jasen Betts <jasen@xnet.co.nz> - 2017-03-22 19:15 +0000
Re: Antenna ferrite loopsticks verses air core? Clifford Heath <no.spam@please.net> - 2017-03-18 10:41 +1100
Re: Antenna ferrite loopsticks verses air core? pcdhobbs@gmail.com - 2017-03-18 14:47 -0700
Re: Antenna ferrite loopsticks verses air core? upsidedown@downunder.com - 2017-03-19 00:22 +0200
Re: Antenna ferrite loopsticks verses air core? Clifford Heath <no.spam@please.net> - 2017-03-19 12:39 +1100
Re: Antenna ferrite loopsticks verses air core? pcdhobbs@gmail.com - 2017-03-18 19:11 -0700
Re: Antenna ferrite loopsticks verses air core? Clifford Heath <no.spam@please.net> - 2017-03-19 13:15 +1100
Re: Antenna ferrite loopsticks verses air core? pcdhobbs@gmail.com - 2017-03-20 04:26 -0700
Re: Antenna ferrite loopsticks verses air core? Clifford Heath <no.spam@please.net> - 2017-03-21 13:17 +1100
Re: Antenna ferrite loopsticks verses air core? "Tim Williams" <tiwill@seventransistorlabs.com> - 2017-03-21 01:32 -0500
Re: Antenna ferrite loopsticks verses air core? upsidedown@downunder.com - 2017-03-21 10:38 +0200
Re: Antenna ferrite loopsticks verses air core? Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> - 2017-03-21 02:53 -0400
Re: Antenna ferrite loopsticks verses air core? pcdhobbs@gmail.com - 2017-03-21 01:01 -0700
Re: Antenna ferrite loopsticks verses air core? Tauno Voipio <tauno.voipio@notused.fi.invalid> - 2017-03-21 12:33 +0200
Re: Antenna ferrite loopsticks verses air core? Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> - 2017-03-21 09:42 -0400
Re: Antenna ferrite loopsticks verses air core? piglet <erichpwagner@hotmail.com> - 2017-03-21 19:05 +0000
Re: Antenna ferrite loopsticks verses air core? George Herold <gherold@teachspin.com> - 2017-03-21 12:49 -0700
Re: Antenna ferrite loopsticks verses air core? piglet <erichpwagner@hotmail.com> - 2017-03-21 18:39 +0000
Re: Antenna ferrite loopsticks verses air core? Tauno Voipio <tauno.voipio@notused.fi.invalid> - 2017-03-21 22:39 +0200
Re: Antenna ferrite loopsticks verses air core? Tauno Voipio <tauno.voipio@notused.fi.invalid> - 2017-03-21 12:30 +0200
Re: Antenna ferrite loopsticks verses air core? Tauno Voipio <tauno.voipio@notused.fi.invalid> - 2017-03-19 17:43 +0200
Re: Antenna ferrite loopsticks verses air core? upsidedown@downunder.com - 2017-03-21 14:39 +0200
Re: Antenna ferrite loopsticks verses air core? Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> - 2017-03-21 09:46 -0400
Re: Antenna ferrite loopsticks verses air core? George Herold <gherold@teachspin.com> - 2017-03-17 17:31 -0700
Re: Antenna ferrite loopsticks verses air core? John Larkin <jjlarkinxyxy@highlandtechnology.com> - 2017-03-17 17:46 -0700
Re: Antenna ferrite loopsticks verses air core? George Herold <gherold@teachspin.com> - 2017-03-17 18:18 -0700
Re: Antenna ferrite loopsticks verses air core? Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> - 2017-03-21 09:55 -0400
Re: Antenna ferrite loopsticks verses air core? John Larkin <jjlarkin@highlandtechnology.com> - 2017-03-17 07:27 -0700
Re: Antenna ferrite loopsticks verses air core? DemonicTubes <tlackie@gmail.com> - 2017-03-17 09:11 -0700
Re: Antenna ferrite loopsticks verses air core? pcdhobbs@gmail.com - 2017-03-17 11:40 -0700
Re: Antenna ferrite loopsticks verses air core? bitrex <bitrex@de.lete.earthlink.net> - 2017-03-17 12:29 -0400
Re: Antenna ferrite loopsticks verses air core? John Larkin <jjlarkinxyxy@highlandtechnology.com> - 2017-03-17 12:25 -0700
Re: Antenna ferrite loopsticks verses air core? bitrex <bitrex@de.lete.earthlink.net> - 2017-03-18 16:20 -0400
Re: Antenna ferrite loopsticks verses air core? Phil Allison <pallison49@gmail.com> - 2017-03-16 15:41 -0700
Re: Antenna ferrite loopsticks verses air core? John Larkin <jjlarkinxyxy@highlandtechnology.com> - 2017-03-16 16:14 -0700
Re: Antenna ferrite loopsticks verses air core? Phil Allison <pallison49@gmail.com> - 2017-03-16 16:25 -0700
Re: Antenna ferrite loopsticks verses air core? amdx <nojunk@knology.net> - 2017-03-19 11:22 -0500
Re: Antenna ferrite loopsticks verses air core? amdx <nojunk@knology.net> - 2017-03-15 21:20 -0500
Re: Antenna ferrite loopsticks verses air core? "Tim Williams" <tiwill@seventransistorlabs.com> - 2017-03-15 23:02 -0500
Re: Antenna ferrite loopsticks verses air core? whit3rd <whit3rd@gmail.com> - 2017-03-15 22:52 -0700
Re: Antenna ferrite loopsticks verses air core? rickman <gnuarm@gmail.com> - 2017-03-16 02:48 -0400
Re: Antenna ferrite loopsticks verses air core? Phil Allison <pallison49@gmail.com> - 2017-03-16 00:10 -0700
Re: Antenna ferrite loopsticks verses air core? amdx <nojunk@knology.net> - 2017-03-16 08:21 -0500
Re: Antenna ferrite loopsticks verses air core? Phil Allison <pallison49@gmail.com> - 2017-03-16 16:10 -0700
Re: Antenna ferrite loopsticks verses air core? Bill Beaty <billb@eskimo.com> - 2017-03-16 12:12 -0700
Re: Antenna ferrite loopsticks verses air core? John Larkin <jjlarkinxyxy@highlandtechnology.com> - 2017-03-16 13:06 -0700
Re: Antenna ferrite loopsticks verses air core? amdx <nojunk@knology.net> - 2017-03-16 15:39 -0500
Re: Antenna ferrite loopsticks verses air core? John Larkin <jjlarkin@highlandtechnology.com> - 2017-03-16 19:57 -0700
Re: Antenna ferrite loopsticks verses air core? amdx <nojunk@knology.net> - 2017-03-18 21:26 -0500
Re: Antenna ferrite loopsticks verses air core? dagmargoodboat@yahoo.com - 2017-03-17 09:44 -0700
Re: Antenna ferrite loopsticks verses air core? dagmargoodboat@yahoo.com - 2017-03-17 17:35 -0700
Re: Antenna ferrite loopsticks verses air core? "billbowden" <bperryb@bowdenshobbycircuits.info> - 2017-03-17 18:35 -0800
Re: Antenna ferrite loopsticks verses air core? dagmargoodboat@yahoo.com - 2017-03-20 09:01 -0700
Re: Antenna ferrite loopsticks verses air core? amdx <nojunk@knology.net> - 2017-03-19 08:20 -0500
Re: Antenna ferrite loopsticks verses air core? "billbowden" <bperryb@bowdenshobbycircuits.info> - 2017-03-19 15:31 -0800
Re: Antenna ferrite loopsticks verses air core? rickman <gnuarm@gmail.com> - 2017-03-19 19:42 -0400
Re: Antenna ferrite loopsticks verses air core? amdx <nojunk@knology.net> - 2017-03-19 19:20 -0500
Re: Antenna ferrite loopsticks verses air core? Phil Allison <pallison49@gmail.com> - 2017-03-19 17:49 -0700
Re: Antenna ferrite loopsticks verses air core? amdx <nojunk@knology.net> - 2017-03-19 20:19 -0500
Re: Antenna ferrite loopsticks verses air core? Robert Baer <robertbaer@localnet.com> - 2017-03-19 19:44 -0800
Re: Antenna ferrite loopsticks verses air core? rickman <gnuarm@gmail.com> - 2017-03-20 00:00 -0400
Re: Antenna ferrite loopsticks verses air core? rickman <gnuarm@gmail.com> - 2017-03-19 23:56 -0400
Re: Antenna ferrite loopsticks verses air core? amdx <nojunk@knology.net> - 2017-03-20 08:36 -0500
Re: Antenna ferrite loopsticks verses air core? dagmargoodboat@yahoo.com - 2017-03-20 09:29 -0700
Re: Antenna ferrite loopsticks verses air core? amdx <nojunk@knology.net> - 2017-03-20 12:54 -0500
Re: Antenna ferrite loopsticks verses air core? amdx <nojunk@knology.net> - 2017-03-20 13:16 -0500
Re: Antenna ferrite loopsticks verses air core? dagmargoodboat@yahoo.com - 2017-03-20 12:31 -0700
Re: Antenna ferrite loopsticks verses air core? rickman <gnuarm@gmail.com> - 2017-03-20 16:46 -0400
Re: Antenna ferrite loopsticks verses air core? amdx <nojunk@knology.net> - 2017-03-20 17:17 -0500
Re: Antenna ferrite loopsticks verses air core? dagmargoodboat@yahoo.com - 2017-03-20 18:25 -0700
Re: Antenna ferrite loopsticks verses air core? amdx <nojunk@knology.net> - 2017-03-20 17:15 -0500
Re: Antenna ferrite loopsticks verses air core? rickman <gnuarm@gmail.com> - 2017-03-20 18:25 -0400
Re: Antenna ferrite loopsticks verses air core? amdx <nojunk@knology.net> - 2017-03-20 17:56 -0500
Re: Antenna ferrite loopsticks verses air core? dagmargoodboat@yahoo.com - 2017-03-20 18:49 -0700
Re: Antenna ferrite loopsticks verses air core? dagmargoodboat@yahoo.com - 2017-03-21 00:19 -0700
Re: Antenna ferrite loopsticks verses air core? amdx <nojunk@knology.net> - 2017-03-21 07:27 -0500
Re: Antenna ferrite loopsticks verses air core? dagmargoodboat@yahoo.com - 2017-03-21 07:28 -0700
Re: Antenna ferrite loopsticks verses air core? amdx <nojunk@knology.net> - 2017-03-21 11:24 -0500
Re: Antenna ferrite loopsticks verses air core? rickman <gnuarm@gmail.com> - 2017-03-21 13:39 -0400
Re: Antenna ferrite loopsticks verses air core? amdx <nojunk@knology.net> - 2017-03-23 13:52 -0500
Re: Antenna ferrite loopsticks verses air core? dagmargoodboat@yahoo.com - 2017-03-23 16:48 -0700
Re: Antenna ferrite loopsticks verses air core? amdx <nojunk@knology.net> - 2017-03-23 23:58 -0500
Re: Antenna ferrite loopsticks verses air core? rickman <gnuarm@gmail.com> - 2017-03-24 01:13 -0400
Re: Antenna ferrite loopsticks verses air core? amdx <nojunk@knology.net> - 2017-03-24 07:00 -0500
Re: Antenna ferrite loopsticks verses air core? rickman <gnuarm@gmail.com> - 2017-03-24 12:47 -0400
Re: Antenna ferrite loopsticks verses air core? amdx <nojunk@knology.net> - 2017-03-24 15:13 -0500
Re: Antenna ferrite loopsticks verses air core? rickman <gnuarm@gmail.com> - 2017-03-24 17:05 -0400
Re: Antenna ferrite loopsticks verses air core? amdx <nojunk@knology.net> - 2017-03-24 08:44 -0500
Re: Antenna ferrite loopsticks verses air core? amdx <nojunk@knology.net> - 2017-03-24 09:13 -0500
Re: Antenna ferrite loopsticks verses air core? dagmargoodboat@yahoo.com - 2017-03-24 09:40 -0700
Re: Antenna ferrite loopsticks verses air core? amdx <nojunk@knology.net> - 2017-03-24 13:08 -0500
Re: Antenna ferrite loopsticks verses air core? dagmargoodboat@yahoo.com - 2017-03-24 13:42 -0700
Re: Antenna ferrite loopsticks verses air core? dagmargoodboat@yahoo.com - 2017-03-24 14:20 -0700
Re: Antenna ferrite loopsticks verses air core? amdx <nojunk@knology.net> - 2017-03-24 22:46 -0500
Re: Antenna ferrite loopsticks verses air core? dagmargoodboat@yahoo.com - 2017-03-24 22:13 -0700
Re: Antenna ferrite loopsticks verses air core? amdx <nojunk@knology.net> - 2017-03-25 09:29 -0500
Re: Antenna ferrite loopsticks verses air core? dagmargoodboat@yahoo.com - 2017-03-25 11:33 -0700
Re: Antenna ferrite loopsticks verses air core? rickman <gnuarm@gmail.com> - 2017-03-25 15:20 -0400
Re: Antenna ferrite loopsticks verses air core? dagmargoodboat@yahoo.com - 2017-03-25 15:25 -0700
Re: Antenna ferrite loopsticks verses air core? rickman <gnuarm@gmail.com> - 2017-03-25 19:17 -0400
Re: Antenna ferrite loopsticks verses air core? dagmargoodboat@yahoo.com - 2017-03-25 17:02 -0700
Re: Antenna ferrite loopsticks verses air core? rickman <gnuarm@gmail.com> - 2017-03-25 21:25 -0400
Re: Antenna ferrite loopsticks verses air core? amdx <nojunk@knology.net> - 2017-03-25 20:10 -0500
Re: Antenna ferrite loopsticks verses air core? rickman <gnuarm@gmail.com> - 2017-03-25 21:32 -0400
Re: Antenna ferrite loopsticks verses air core? amdx <nojunk@knology.net> - 2017-03-25 22:42 -0500
Re: Antenna ferrite loopsticks verses air core? rickman <gnuarm@gmail.com> - 2017-03-26 00:00 -0400
Re: Antenna ferrite loopsticks verses air core? amdx <nojunk@knology.net> - 2017-03-26 04:00 -0500
Re: Antenna ferrite loopsticks verses air core? rickman <gnuarm@gmail.com> - 2017-03-26 05:36 -0400
Re: Antenna ferrite loopsticks verses air core? amdx <nojunk@knology.net> - 2017-03-26 09:34 -0500
Re: Antenna ferrite loopsticks verses air core? amdx <nojunk@knology.net> - 2017-03-26 10:23 -0500
Re: Antenna ferrite loopsticks verses air core? rickman <gnuarm@gmail.com> - 2017-03-26 13:10 -0400
Re: Antenna ferrite loopsticks verses air core? Jasen Betts <jasen@xnet.co.nz> - 2017-03-27 09:32 +0000
Re: Antenna ferrite loopsticks verses air core? amdx <nojunk@knology.net> - 2017-03-25 14:44 -0500
Re: Antenna ferrite loopsticks verses air core? rickman <gnuarm@gmail.com> - 2017-03-25 16:34 -0400
Re: Antenna ferrite loopsticks verses air core? amdx <nojunk@knology.net> - 2017-03-25 16:12 -0500
Re: Antenna ferrite loopsticks verses air core? rickman <gnuarm@gmail.com> - 2017-03-25 17:44 -0400
Re: Antenna ferrite loopsticks verses air core? amdx <nojunk@knology.net> - 2017-03-25 17:08 -0500
Re: Antenna ferrite loopsticks verses air core? dagmargoodboat@yahoo.com - 2017-03-25 16:00 -0700
Re: Antenna ferrite loopsticks verses air core? amdx <nojunk@knology.net> - 2017-03-25 18:27 -0500
Re: Antenna ferrite loopsticks verses air core? rickman <gnuarm@gmail.com> - 2017-03-25 19:31 -0400
Re: Antenna ferrite loopsticks verses air core? amdx <nojunk@knology.net> - 2017-03-25 21:21 -0500
Re: Antenna ferrite loopsticks verses air core? rickman <gnuarm@gmail.com> - 2017-03-25 23:42 -0400
Re: Antenna ferrite loopsticks verses air core? dagmargoodboat@yahoo.com - 2017-03-25 17:34 -0700
Re: Antenna ferrite loopsticks verses air core? rickman <gnuarm@gmail.com> - 2017-03-20 16:34 -0400
Re: Antenna ferrite loopsticks verses air core? amdx <nojunk@knology.net> - 2017-03-20 17:21 -0500
Re: Antenna ferrite loopsticks verses air core? rickman <gnuarm@gmail.com> - 2017-03-20 18:27 -0400
Re: Antenna ferrite loopsticks verses air core? amdx <nojunk@knology.net> - 2017-03-20 17:54 -0500
Re: Antenna ferrite loopsticks verses air core? rickman <gnuarm@gmail.com> - 2017-03-20 20:55 -0400
Re: Antenna ferrite loopsticks verses air core? amdx <nojunk@knology.net> - 2017-03-20 20:09 -0500
Re: Antenna ferrite loopsticks verses air core? rickman <gnuarm@gmail.com> - 2017-03-20 21:28 -0400
Re: Antenna ferrite loopsticks verses air core? amdx <nojunk@knology.net> - 2017-03-20 21:23 -0500
Re: Antenna ferrite loopsticks verses air core? rickman <gnuarm@gmail.com> - 2017-03-20 23:25 -0400
Re: Antenna ferrite loopsticks verses air core? amdx <nojunk@knology.net> - 2017-03-21 07:54 -0500
Re: Antenna ferrite loopsticks verses air core? dagmargoodboat@yahoo.com - 2017-03-21 07:57 -0700
Re: Antenna ferrite loopsticks verses air core? amdx <nojunk@knology.net> - 2017-03-21 11:54 -0500
Re: Antenna ferrite loopsticks verses air core? dagmargoodboat@yahoo.com - 2017-03-21 12:21 -0700
Re: Antenna ferrite loopsticks verses air core? amdx <nojunk@knology.net> - 2017-03-21 21:40 -0500
Re: Antenna ferrite loopsticks verses air core? rickman <gnuarm@gmail.com> - 2017-03-21 13:27 -0400
Re: Antenna ferrite loopsticks verses air core? "billbowden" <bperryb@bowdenshobbycircuits.info> - 2017-03-20 15:41 -0800
Re: Antenna ferrite loopsticks verses air core? amdx <nojunk@knology.net> - 2017-03-20 19:13 -0500
Re: Antenna ferrite loopsticks verses air core? rickman <gnuarm@gmail.com> - 2017-03-20 21:18 -0400
Re: Antenna ferrite loopsticks verses air core? "Tim Williams" <tiwill@seventransistorlabs.com> - 2017-03-21 04:35 -0500
Re: Antenna ferrite loopsticks verses air core? Tauno Voipio <tauno.voipio@notused.fi.invalid> - 2017-03-20 11:06 +0200
Re: Antenna ferrite loopsticks verses air core? Joerg <news@analogconsultants.com> - 2017-03-24 10:14 -0700
Re: Antenna ferrite loopsticks verses air core? rickman <gnuarm@gmail.com> - 2017-03-24 13:59 -0400
Re: Antenna ferrite loopsticks verses air core? Joerg <news@analogconsultants.com> - 2017-03-24 13:36 -0700
Re: Antenna ferrite loopsticks verses air core? rickman <gnuarm@gmail.com> - 2017-03-25 13:49 -0400
Re: Antenna ferrite loopsticks verses air core? Joerg <news@analogconsultants.com> - 2017-03-25 12:30 -0700
Re: Antenna ferrite loopsticks verses air core? rickman <gnuarm@gmail.com> - 2017-03-25 21:39 -0400
Re: Antenna ferrite loopsticks verses air core? Joerg <news@analogconsultants.com> - 2017-03-26 07:35 -0700
Re: Antenna ferrite loopsticks verses air core? rickman <gnuarm@gmail.com> - 2017-03-26 13:15 -0400
Re: Antenna ferrite loopsticks verses air core? Joerg <news@analogconsultants.com> - 2017-03-27 07:46 -0700
Re: Antenna ferrite loopsticks verses air core? rickman <gnuarm@gmail.com> - 2017-03-27 10:59 -0400
Re: Antenna ferrite loopsticks verses air core? Joerg <news@analogconsultants.com> - 2017-03-27 09:22 -0700
Re: Antenna ferrite loopsticks verses air core? rickman <gnuarm@gmail.com> - 2017-03-27 23:47 -0400
Re: Antenna ferrite loopsticks verses air core? Clifford Heath <no.spam@please.net> - 2017-03-28 18:15 +1100
Re: Antenna ferrite loopsticks verses air core? rickman <gnuarm@gmail.com> - 2017-03-28 03:42 -0400
Re: Antenna ferrite loopsticks verses air core? Clifford Heath <no.spam@please.net> - 2017-03-28 19:07 +1100
Re: Antenna ferrite loopsticks verses air core? rickman <gnuarm@gmail.com> - 2017-03-28 04:35 -0400
Re: Antenna ferrite loopsticks verses air core? Clifford Heath <no.spam@please.net> - 2017-03-28 21:58 +1100
Re: Antenna ferrite loopsticks verses air core? amdx <nojunk@knology.net> - 2017-03-28 09:42 -0500
Re: Antenna ferrite loopsticks verses air core? upsidedown@downunder.com - 2017-03-28 12:51 +0300
Re: Antenna ferrite loopsticks verses air core? Joerg <news@analogconsultants.com> - 2017-03-28 07:23 -0700
Re: Antenna ferrite loopsticks verses air core? rickman <gnuarm@gmail.com> - 2017-03-29 13:28 -0400
Re: Antenna ferrite loopsticks verses air core? upsidedown@downunder.com - 2017-03-30 00:37 +0300
Re: Antenna ferrite loopsticks verses air core? rickman <gnuarm@gmail.com> - 2017-03-29 21:02 -0400
Re: Antenna ferrite loopsticks verses air core? amdx <nojunk@knology.net> - 2017-03-28 09:57 -0500
Re: Antenna ferrite loopsticks verses air core? Joerg <news@analogconsultants.com> - 2017-03-28 09:05 -0700
Re: Antenna ferrite loopsticks verses air core? amdx <nojunk@knology.net> - 2017-03-28 11:27 -0500
Re: Antenna ferrite loopsticks verses air core? rickman <gnuarm@gmail.com> - 2017-03-29 13:29 -0400
Re: Antenna ferrite loopsticks verses air core? Tauno Voipio <tauno.voipio@notused.fi.invalid> - 2017-03-27 14:57 +0300
Re: Antenna ferrite loopsticks verses air core? amdx <nojunk@knology.net> - 2017-03-27 07:25 -0500
Re: Antenna ferrite loopsticks verses air core? Lasse Langwadt Christensen <langwadt@fonz.dk> - 2017-03-27 09:47 -0700
Re: Antenna ferrite loopsticks verses air core? Tauno Voipio <tauno.voipio@notused.fi.invalid> - 2017-03-27 19:51 +0300
Re: Antenna ferrite loopsticks verses air core? amdx <nojunk@knology.net> - 2017-03-27 12:21 -0500
Re: Antenna ferrite loopsticks verses air core? rickman <gnuarm@gmail.com> - 2017-03-27 18:54 -0400
Re: Antenna ferrite loopsticks verses air core? Clifford Heath <no.spam@please.net> - 2017-03-28 10:16 +1100
Re: Antenna ferrite loopsticks verses air core? Joerg <news@analogconsultants.com> - 2017-03-27 16:58 -0700
Re: Antenna ferrite loopsticks verses air core? rickman <gnuarm@gmail.com> - 2017-03-27 23:33 -0400
Re: Antenna ferrite loopsticks verses air core? Clifford Heath <no.spam@please.net> - 2017-03-28 18:18 +1100
Re: Antenna ferrite loopsticks verses air core? rickman <gnuarm@gmail.com> - 2017-03-28 03:48 -0400
Re: Antenna ferrite loopsticks verses air core? Joerg <news@analogconsultants.com> - 2017-03-28 07:28 -0700
Re: Antenna ferrite loopsticks verses air core? Tauno Voipio <tauno.voipio@notused.fi.invalid> - 2017-03-28 13:41 +0300
Re: Antenna ferrite loopsticks verses air core? Jasen Betts <jasen@xnet.co.nz> - 2017-03-28 07:44 +0000
Re: Antenna ferrite loopsticks verses air core? amdx <nojunk@knology.net> - 2017-03-27 21:18 -0500
Re: Antenna ferrite loopsticks verses air core? Clifford Heath <no.spam@please.net> - 2017-03-28 18:22 +1100
Re: Antenna ferrite loopsticks verses air core? rickman <gnuarm@gmail.com> - 2017-03-28 04:01 -0400
Re: Antenna ferrite loopsticks verses air core? Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> - 2017-03-28 11:04 -0400
Re: Antenna ferrite loopsticks verses air core? amdx <nojunk@knology.net> - 2017-03-28 10:58 -0500
Re: Antenna ferrite loopsticks verses air core? dagmargoodboat@yahoo.com - 2017-03-28 11:13 -0700
Re: Antenna ferrite loopsticks verses air core? amdx <nojunk@knology.net> - 2017-03-28 10:12 -0500
Re: Antenna ferrite loopsticks verses air core? rickman <gnuarm@gmail.com> - 2017-03-29 13:47 -0400
Re: Antenna ferrite loopsticks verses air core? amdx <nojunk@knology.net> - 2017-03-29 14:18 -0500
Re: Antenna ferrite loopsticks verses air core? upsidedown@downunder.com - 2017-03-30 00:47 +0300
Re: Antenna ferrite loopsticks verses air core? amdx <nojunk@knology.net> - 2017-03-29 19:15 -0500
Re: Antenna ferrite loopsticks verses air core? rickman <gnuarm@gmail.com> - 2017-03-29 21:40 -0400
Re: Antenna ferrite loopsticks verses air core? Clifford Heath <no.spam@please.net> - 2017-03-29 14:26 +1100
Re: Antenna ferrite loopsticks verses air core? rickman <gnuarm@gmail.com> - 2017-03-29 23:47 -0400
Re: Antenna ferrite loopsticks verses air core? Clifford Heath <no.spam@please.net> - 2017-03-29 10:18 +1100
Re: Antenna ferrite loopsticks verses air core? amdx <nojunk@knology.net> - 2017-03-29 19:12 -0500
Re: Antenna ferrite loopsticks verses air core? Clifford Heath <no.spam@please.net> - 2017-03-29 11:49 +1100
Re: Antenna ferrite loopsticks verses air core? Jeff Liebermann <jeffl@cruzio.com> - 2017-03-29 18:21 -0700
Re: Antenna ferrite loopsticks verses air core? Clifford Heath <no.spam@please.net> - 2017-03-29 14:19 +1100
Re: Antenna ferrite loopsticks verses air core? Jeff Liebermann <jeffl@cruzio.com> - 2017-03-29 18:01 -0700
Re: Antenna ferrite loopsticks verses air core? Ralph Barone <ralph@invalid.com> - 2017-03-30 02:35 +0000
Re: Antenna ferrite loopsticks verses air core? Clifford Heath <no.spam@please.net> - 2017-03-29 14:23 +1100
Re: Antenna ferrite loopsticks verses air core? rickman <gnuarm@gmail.com> - 2017-03-29 23:46 -0400
Re: Antenna ferrite loopsticks verses air core? dagmargoodboat@yahoo.com - 2017-03-30 21:40 -0700
Re: Antenna ferrite loopsticks verses air core? krw@notreal.com - 2017-03-31 20:08 -0400
Re: Antenna ferrite loopsticks verses air core? Clifford Heath <no.spam@please.net> - 2017-04-02 12:59 +1000
Re: Antenna ferrite loopsticks verses air core? rickman <gnuarm@gmail.com> - 2017-04-01 23:55 -0400
Re: Antenna ferrite loopsticks verses air core? Clifford Heath <no.spam@please.net> - 2017-04-02 14:36 +1000
Re: Antenna ferrite loopsticks verses air core? rickman <gnuarm@gmail.com> - 2017-04-02 01:56 -0400
Re: Antenna ferrite loopsticks verses air core? Clifford Heath <no.spam@please.net> - 2017-04-02 18:11 +1000
Re: Antenna ferrite loopsticks verses air core? amdx <nojunk@knology.net> - 2017-04-02 07:35 -0500
Re: Antenna ferrite loopsticks verses air core? mkolber1@gmail.com - 2017-04-02 06:16 -0700
Re: Antenna ferrite loopsticks verses air core? Clifford Heath <no.spam@please.net> - 2017-04-03 07:40 +1000
Re: Antenna ferrite loopsticks verses air core? dagmargoodboat@yahoo.com - 2017-04-02 08:12 -0700
Re: Antenna ferrite loopsticks verses air core? Clifford Heath <no.spam@please.net> - 2017-04-03 08:47 +1000
Re: Antenna ferrite loopsticks verses air core? dagmargoodboat@yahoo.com - 2017-04-02 18:39 -0700
Re: Antenna ferrite loopsticks verses air core? amdx <nojunk@knology.net> - 2017-04-02 21:22 -0500
Re: Antenna ferrite loopsticks verses air core? dagmargoodboat@yahoo.com - 2017-04-03 14:12 -0700
Re: Antenna ferrite loopsticks verses air core? rickman <gnuarm@gmail.com> - 2017-03-27 23:25 -0400
Re: Antenna ferrite loopsticks verses air core? upsidedown@downunder.com - 2017-03-28 12:58 +0300
Re: Antenna ferrite loopsticks verses air core? Joerg <news@analogconsultants.com> - 2017-03-27 07:52 -0700
Re: Antenna ferrite loopsticks verses air core? Tauno Voipio <tauno.voipio@notused.fi.invalid> - 2017-03-24 21:35 +0200
Page 1 of 16 [1] 2 3 … 16 Next page →
| From | "billbowden" <bperryb@bowdenshobbycircuits.info> |
|---|---|
| Date | 2017-03-14 20:18 -0800 |
| Subject | Antenna ferrite loopsticks verses air core? |
| Message-ID | <58c8c099$0$22749$c3e8da3$33881b6a@news.astraweb.com> |
Which is a better design. Suppose you have a 6 inch length of PVC pipe with numerous turns of wire that has an inductance of say 200uH. Now suppose you use the same (6 inch) piece of PVC with a ferrite rod in the core with considerably fewer turns of wire. Which one would capture the most signal at the AM Broadcast frequencies (500K to 2 Megs) and poduce the greatest signal output? Would it be more ferrite, or more wire?
[toc] | [next] | [standalone]
| From | John Robertson <spam@flippers.com> |
|---|---|
| Date | 2017-03-14 22:21 -0700 |
| Message-ID | <t7ydnTDRT7nZUlXFnZ2dnUU7-VfNnZ2d@giganews.com> |
| In reply to | #451909 |
On 2017/03/14 9:18 PM, billbowden wrote: > Which is a better design. Suppose you have a 6 inch length of PVC pipe with > numerous turns of wire that has an inductance of say 200uH. Now suppose you > use the same (6 inch) piece of PVC with a ferrite rod in the core with > considerably fewer turns of wire. Which one would capture the most signal > at the AM Broadcast frequencies (500K to 2 Megs) and poduce the greatest > signal output? Would it be more ferrite, or more wire? > > Considering that all portable transistor radios I've ever seen had ferrite core antennas I would assume (not have the math) that ferrite is more efficient in small spaces. I don't think the price of the copper wire back in the 50s and 60s would make enough difference to prefer ferrite over copper wire... John
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| From | Phil Allison <pallison49@gmail.com> |
|---|---|
| Date | 2017-03-14 23:43 -0700 |
| Message-ID | <fde659de-674b-4ce5-afc4-a21d0ff0bc2c@googlegroups.com> |
| In reply to | #451909 |
Bill Bowden wrote: > > Which is a better design. Suppose you have a 6 inch length of PVC pipe with > numerous turns of wire that has an inductance of say 200uH. Now suppose you > use the same (6 inch) piece of PVC with a ferrite rod in the core with > considerably fewer turns of wire. Which one would capture the most signal > at the AM Broadcast frequencies (500K to 2 Megs) and poduce the greatest > signal output? Would it be more ferrite, or more wire? > ** Your Q is stupid, ferrite antennas must have the wire wound on the rod. Woven, frame antennas like this were used in compact and portable tube radios until the arrival of ferrite rods. https://s-media-cache-ak0.pinimg.com/736x/06/4b/b1/064bb104c1c02a095ae2cdeaf60faaa1.jpg Their performance was comparable with a ferrite rod antennas of similar length - the ferrite job having rather higher Q due to using less wire. Most frame anttennas use "Litz" wire to improve the Q - as did ferrite equivalents. FYI Q = ratio of resistance ( at radio frequencies) to inductance. .... Phil
[toc] | [prev] | [next] | [standalone]
| From | "billbowden" <bperryb@bowdenshobbycircuits.info> |
|---|---|
| Date | 2017-03-15 12:27 -0800 |
| Message-ID | <58c9a3cf$0$29512$c3e8da3$c8b7d2e6@news.astraweb.com> |
| In reply to | #451917 |
"Phil Allison" <pallison49@gmail.com> wrote in message news:fde659de-674b-4ce5-afc4-a21d0ff0bc2c@googlegroups.com... > Bill Bowden wrote: >> >> Which is a better design. Suppose you have a 6 inch length of PVC pipe >> with >> numerous turns of wire that has an inductance of say 200uH. Now suppose >> you >> use the same (6 inch) piece of PVC with a ferrite rod in the core with >> considerably fewer turns of wire. Which one would capture the most >> signal >> at the AM Broadcast frequencies (500K to 2 Megs) and poduce the greatest >> signal output? Would it be more ferrite, or more wire? >> > > ** Your Q is stupid, ferrite antennas must have the wire wound on the rod. > Well, I can't help it if I'm stupid. I was just born that way. And I did assume the wire should be wound around the ferrite rod usually using Litz wire to reduce the skin effect. But there are some eddy current losses in the ferrite and I was just wondering if you knew how much that woud be? > Woven, frame antennas like this were used in compact and portable tube > radios until the arrival of ferrite rods. > > https://s-media-cache-ak0.pinimg.com/736x/06/4b/b1/064bb104c1c02a095ae2cdeaf60faaa1.jpg > > Their performance was comparable with a ferrite rod antennas of similar > length - the ferrite job having rather higher Q due to using less wire. > > Most frame anttennas use "Litz" wire to improve the Q - as did ferrite > equivalents. > > > FYI > > Q = ratio of resistance ( at radio frequencies) to inductance. > > > > .... Phil > > >
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| From | Phil Allison <pallison49@gmail.com> |
|---|---|
| Date | 2017-03-15 17:19 -0700 |
| Message-ID | <7108a9ca-3ab7-423b-aa1e-7b53d1916cdb@googlegroups.com> |
| In reply to | #452002 |
Bill Bowden wrote: > > ** Your Q is stupid, ferrite antennas must have the wire wound on the rod. > > > Well, I can't help it if I'm stupid. ** But you can piss off and stop being a PITA troll. > I was just born that way. ** No excuse for you to go around annoying people. > And I did > assume the wire should be wound around the ferrite rod usually using Litz > wire to reduce the skin effect. > ** No way anyone can know what you claim you assumed but did not post. And you can make up *any damn shit* later. > But there are some eddy current losses in > the ferrite and I was just wondering if you knew how much that woud be? ** That is nothing like your original Q and no question was directed at me. You do NOT direct questions at posters except to explain what they have posted. All other question are directed to the group. You are making shit up, moment to moment. Kindly fuck off. .... Phil
[toc] | [prev] | [next] | [standalone]
| From | "billbowden" <bperryb@bowdenshobbycircuits.info> |
|---|---|
| Date | 2017-03-15 18:51 -0800 |
| Message-ID | <58c9fdc9$0$29560$c3e8da3$c8b7d2e6@news.astraweb.com> |
| In reply to | #452032 |
"Phil Allison" <pallison49@gmail.com> wrote in message news:7108a9ca-3ab7-423b-aa1e-7b53d1916cdb@googlegroups.com... > Bill Bowden wrote: > >> >> ** Your Q is stupid, ferrite antennas must have the wire wound on the >> rod. >> >> >> Well, I can't help it if I'm stupid. > > ** But you can piss off and stop being a PITA troll. > >> I was just born that way. > > > ** No excuse for you to go around annoying people. > >> And I did >> assume the wire should be wound around the ferrite rod usually using Litz >> wire to reduce the skin effect. >> > > ** No way anyone can know what you claim you assumed but did not post. > Go read the original post. I clearly asked which was better, an air core inductor or a ferrite core of the same size . The answer should be yes this and not that, but you don't have any idea. You are just a bozo. . > And you can make up *any damn shit* later. > > >> But there are some eddy current losses in >> the ferrite and I was just wondering if you knew how much that woud be? > > > ** That is nothing like your original Q and no question was directed at > me. > > You do NOT direct questions at posters except to explain what they have > posted. All other question are directed to the group. > Well, I'm directing the question to you since you seem to know everything. And BTW, I worked in a radio factory and adjusted maybe 1000 antenna loopsticks in transistor radios and peaked the trimmer caps at the top end and moved the coil winding on the ferrite rod at the low end to get best performance across the band. I'm not a novice. So, why don't you fuck off? . . > You are making shit up, moment to moment. > > Kindly fuck off. > > > .... Phil
[toc] | [prev] | [next] | [standalone]
| From | Phil Allison <pallison49@gmail.com> |
|---|---|
| Date | 2017-03-15 20:08 -0700 |
| Message-ID | <889d16ce-72ac-424c-99a0-c718e40171ef@googlegroups.com> |
| In reply to | #452071 |
Bill Bowden the Fuckwit LIAR wrote:
> >
> >
> > ** No excuse for you to go around annoying people.
> >
> >> And I did
> >> assume the wire should be wound around the ferrite rod usually using Litz
> >> wire to reduce the skin effect.
> >>
> >
> > ** No way anyone can know what you claim you assumed but did not post.
> >
>
> Go read the original post.
** Go fuck yourself - moron.
> >
> >> But there are some eddy current losses in
> >> the ferrite and I was just wondering if you knew how much that woud be?
> >
> >
> > ** That is nothing like your original Q and no question was directed at
> > me.
> >
> > You do NOT direct questions at posters except to explain what they have
> > posted. All other question are directed to the group.
> >
>
> Well, I'm directing the question to you since you seem to know everything.
>
** You just posted the DIRECT opposite.
You are pathetic moron and TROLL.
> And BTW, I worked in a radio factory and adjusted maybe 1000 antenna
> loopsticks in transistor radios and peaked the trimmer caps at the top end
> and moved the coil winding on the ferrite rod at the low end to get best
> performance across the band. I'm not a novice.
>
** But you ARE a complete MORON !!!
FFS - FOAD
..... Phil
[toc] | [prev] | [next] | [standalone]
| From | rickman <gnuarm@gmail.com> |
|---|---|
| Date | 2017-03-16 00:24 -0400 |
| Message-ID | <oad3s1$bat$1@dont-email.me> |
| In reply to | #452071 |
On 3/15/2017 10:51 PM, billbowden wrote: > "Phil Allison" <pallison49@gmail.com> wrote in message > news:7108a9ca-3ab7-423b-aa1e-7b53d1916cdb@googlegroups.com... >> Bill Bowden wrote: >> >>> >>> ** Your Q is stupid, ferrite antennas must have the wire wound on the >>> rod. >>> >>> >>> Well, I can't help it if I'm stupid. >> >> ** But you can piss off and stop being a PITA troll. >> >>> I was just born that way. >> >> >> ** No excuse for you to go around annoying people. >> >>> And I did >>> assume the wire should be wound around the ferrite rod usually using Litz >>> wire to reduce the skin effect. >>> >> >> ** No way anyone can know what you claim you assumed but did not post. >> > > Go read the original post. I clearly asked which was better, an air core > inductor or a ferrite core of the same size . The answer should be yes this > and not that, but you don't have any idea. You are just a bozo. . > > >> And you can make up *any damn shit* later. >> >> >>> But there are some eddy current losses in >>> the ferrite and I was just wondering if you knew how much that woud be? >> >> >> ** That is nothing like your original Q and no question was directed at >> me. >> >> You do NOT direct questions at posters except to explain what they have >> posted. All other question are directed to the group. >> > > Well, I'm directing the question to you since you seem to know everything. > And BTW, I worked in a radio factory and adjusted maybe 1000 antenna > loopsticks in transistor radios and peaked the trimmer caps at the top end > and moved the coil winding on the ferrite rod at the low end to get best > performance across the band. I'm not a novice. So, why don't you fuck off? > .. . > >> You are making shit up, moment to moment. >> >> Kindly fuck off. Good old Phil is not anyone you should worry with. He may know some stuff, but his manner is such that he is best killfiled. That's what I do. I see that he makes posts, but they are marked as having been read. I very, very seldom bother to read any of his crap, even when someone else quotes him. -- Rick C
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| From | Phil Allison <pallison49@gmail.com> |
|---|---|
| Date | 2017-03-15 22:17 -0700 |
| Message-ID | <fd08ef92-b7b6-4676-ac6f-a0a009574afe@googlegroups.com> |
| In reply to | #452083 |
Prickman the Idiot wrote: > >> You are making shit up, moment to moment. > >> > >> Kindly fuck off. > > Good old Phil is not anyone you should worry with. > ** And not someone to be messed with either. Prickman is a stupid, bullshitting ass. And an incorrigible, PITA troll on the NG. He has ben proven 100% wrong thousands of times. FFS, DO NOT BELIVE anything the wanker posts .... Phil ..... Phil
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| From | amdx <nojunk@knology.net> |
|---|---|
| Date | 2017-03-16 13:04 -0500 |
| Message-ID | <oaejud$1jt$1@dont-email.me> |
| In reply to | #452071 |
On 3/15/2017 9:51 PM, billbowden wrote:
> "Phil Allison" <pallison49@gmail.com> wrote in message
> news:7108a9ca-3ab7-423b-aa1e-7b53d1916cdb@googlegroups.com...
>> Bill Bowden wrote:
>>
>>>
>>> ** Your Q is stupid, ferrite antennas must have the wire wound on the
>>> rod.
>>>
>>>
>>> Well, I can't help it if I'm stupid.
>>
>> ** But you can piss off and stop being a PITA troll.
>>
>>> I was just born that way.
>>
>>
>> ** No excuse for you to go around annoying people.
>>
>>> And I did
>>> assume the wire should be wound around the ferrite rod usually using Litz
>>> wire to reduce the skin effect.
>>>
>>
>> ** No way anyone can know what you claim you assumed but did not post.
>>
>
> Go read the original post. I clearly asked which was better, an air core
> inductor or a ferrite core of the same size . The answer should be yes this
> and not that, but you don't have any idea. You are just a bozo. .
>
>
>> And you can make up *any damn shit* later.
>>
>>
>>> But there are some eddy current losses in
>>> the ferrite and I was just wondering if you knew how much that woud be?
>>
>>
>> ** That is nothing like your original Q and no question was directed at
>> me.
>>
>> You do NOT direct questions at posters except to explain what they have
>> posted. All other question are directed to the group.
>>
>
> Well, I'm directing the question to you since you seem to know everything.
> And BTW, I worked in a radio factory and adjusted maybe 1000 antenna
> loopsticks in transistor radios and peaked the trimmer caps at the top end
> and moved the coil winding on the ferrite rod at the low end to get best
> performance across the band. I'm not a novice. So, why don't you fuck off?
> . .
>
>> You are making shit up, moment to moment.
>>
>> Kindly fuck off.
>>
>>
>> .... Phil
>
>
Please don't abuse Phil, he's our entertainment.
Mikek
---
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| From | rickman <gnuarm@gmail.com> |
|---|---|
| Date | 2017-03-15 02:48 -0400 |
| Message-ID | <oaanum$upg$1@dont-email.me> |
| In reply to | #451909 |
On 3/15/2017 12:18 AM, billbowden wrote: > Which is a better design. Suppose you have a 6 inch length of PVC pipe with > numerous turns of wire that has an inductance of say 200uH. Now suppose you > use the same (6 inch) piece of PVC with a ferrite rod in the core with > considerably fewer turns of wire. Which one would capture the most signal > at the AM Broadcast frequencies (500K to 2 Megs) and poduce the greatest > signal output? Would it be more ferrite, or more wire? You are asking how the antenna output voltage varies with the mu of the inductor core if the inductance is held constant by varying the number of turns of wire. The signal strength is related to number of turns linearly as well as the core permeability. I'll use the tilda to indicate proportionality. E ~ N * mu Inductance is proportional to the square of the number of turns and the permeability. L ~ N^2 * mu So when a magnetic core is added the number of turns required to maintain the inductance is reduced by the square root of the relative permeability. N ~ sqrt(mu(rel)) The impact on the received voltage will be reduced by the square root of the relative permeability through the turns change, but increased linearly by the change in mu resulting in an overall increase in received voltage by the square root of the relative permeability. So adding a material with mu(rel) of 4.0 will cut the number of turns in half and increase the output voltage by 2. This doesn't include an improvement in the resistive losses of the coil. The Q of the coil will be reduced as the inductance drops linearly, but the resistance goes down by the square root of the permeability. -- Rick C
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| From | makolber@yahoo.com |
|---|---|
| Date | 2017-03-15 06:35 -0700 |
| Message-ID | <02d0a874-f95c-40ef-a5f8-be48fa98a573@googlegroups.com> |
| In reply to | #451918 |
> > So adding a material with mu(rel) of 4.0 will cut the number of turns in > half and increase the output voltage by 2. This doesn't include an > improvement in the resistive losses of the coil. The Q of the coil will > be reduced as the inductance drops linearly, but the resistance goes > down by the square root of the permeability. > > -- > > Rick C And in the AM broadcast band, the SNR is usually not determined by the radio but rather by the atmospheric noise and interference form other stations,,,, so even though you may build an antenna that puts out more "volts" it will not be helpful for picking up weaker signals. M
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| From | "billbowden" <bperryb@bowdenshobbycircuits.info> |
|---|---|
| Date | 2017-03-15 12:46 -0800 |
| Message-ID | <58c9a811$0$29522$c3e8da3$c8b7d2e6@news.astraweb.com> |
| In reply to | #451938 |
<makolber@yahoo.com> wrote in message news:02d0a874-f95c-40ef-a5f8-be48fa98a573@googlegroups.com... > >> So adding a material with mu(rel) of 4.0 will cut the number of turns in >> half and increase the output voltage by 2. This doesn't include an >> improvement in the resistive losses of the coil. The Q of the coil will >> be reduced as the inductance drops linearly, but the resistance goes >> down by the square root of the permeability. >> >> -- >> > Rick C >And in the AM broadcast band, the SNR is usually not determined by the >radio but rather by the atmospheric noise and interference form other >stations,,,, so >even though you may build an antenna that puts out more >"volts" it will not be helpful for picking up weaker signals. >M Yes, that's true. It really doesn't matter what the signal strength is, only how much additional noise you introduce into the system.
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| From | Phil Allison <pallison49@gmail.com> |
|---|---|
| Date | 2017-03-15 17:22 -0700 |
| Message-ID | <6a97e732-7c03-469e-af52-38981ba9de26@googlegroups.com> |
| In reply to | #451938 |
mako...@yahoo.com wrote: > > > And in the AM broadcast band, the SNR is usually not determined by the > radio but rather by the atmospheric noise and interference form > other stations,,,, > ** Providing there is an adequate signal from the antenna carrying the wanted broadcast. > so even though you may build an antenna that puts out more "volts" > it will not be helpful for picking up weaker signals. ** Complete non-sequitur and obviously false. ..... Phil
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| From | Mike Perkins <spam@spam.com> |
|---|---|
| Date | 2017-03-30 01:42 +0100 |
| Message-ID | <obhk97$948$1@news2.open-news-network.org> |
| In reply to | #452033 |
On 16/03/2017 00:22, Phil Allison wrote: > mako...@yahoo.com wrote: >> >> >> And in the AM broadcast band, the SNR is usually not determined by the >> radio but rather by the atmospheric noise and interference form >> other stations,,,, >> > > ** Providing there is an adequate signal from the antenna carrying the wanted broadcast. > > >> so even though you may build an antenna that puts out more "volts" >> it will not be helpful for picking up weaker signals. > > > ** Complete non-sequitur and obviously false. Are you suggesting the converse is true? Where external noise sources and interference are substantially above the thermally generated noise floor and first amplifier noise, the SNR will magically improve if you use a bigger aerial? -- Mike Perkins Video Solutions Ltd www.videosolutions.ltd.uk
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| From | Phil Allison <pallison49@gmail.com> |
|---|---|
| Date | 2017-03-29 18:20 -0700 |
| Message-ID | <d0a77944-2d8e-4022-adb5-bebace224f33@googlegroups.com> |
| In reply to | #454161 |
Mike Perkins wrote: > Phil Allison wrote: > > mako...@yahoo.com wrote: > >> > >> > >> And in the AM broadcast band, the SNR is usually not determined by the > >> radio but rather by the atmospheric noise and interference form > >> other stations,,,, > >> > > > > ** Providing there is an adequate signal from the antenna carrying the wanted broadcast. > > > > > >> so even though you may build an antenna that puts out more "volts" > >> it will not be helpful for picking up weaker signals. > > > > > > ** Complete non-sequitur and obviously false. > > Are you suggesting the converse is true? Where external noise sources > and interference are substantially above the thermally generated noise > floor and first amplifier noise, the SNR will magically improve if you > use a bigger aerial? > ** In another post on the same date, I pointed out the obvious truism that there is no such limit to the s/n of an AM broadcast. In the primary reception area of an transmitter, the SIGNAL can be hugely bigger than the ambient and natural noise. Only when DXing is the signal seriously compromised by noise. Even then, a directional antenna will favour the broadcast over noise arriving from all directions. FYI: the opposite of a false statement is not usually a true statement. ..... Phil .... Phil
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| From | upsidedown@downunder.com |
|---|---|
| Date | 2017-03-16 08:44 +0200 |
| Message-ID | <tmckcchis3ri6sclbsd16gra0a1llp0ar7@4ax.com> |
| In reply to | #451938 |
On Wed, 15 Mar 2017 06:35:37 -0700 (PDT), makolber@yahoo.com wrote: > >> >> So adding a material with mu(rel) of 4.0 will cut the number of turns in >> half and increase the output voltage by 2. This doesn't include an >> improvement in the resistive losses of the coil. The Q of the coil will >> be reduced as the inductance drops linearly, but the resistance goes >> down by the square root of the permeability. >> >> -- >> >> Rick C > >And in the AM broadcast band, the SNR is usually not determined by the radio but rather by the atmospheric noise and interference form other stations,,,, so even though you may build an antenna that puts out more "volts" it will not be helpful for picking up weaker signals. > >M > The gain ( = directivity x efficiency) for a typical loopstick is very bad in the order of -60 to -80 dB, due to the extremely low efficiency. But thanks to the extremely high band noise at LF and MF, you still get usable SNR with such designs.
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| From | Phil Allison <pallison49@gmail.com> |
|---|---|
| Date | 2017-03-16 00:17 -0700 |
| Message-ID | <438da9b7-4854-4ef6-90c3-51d62142a079@googlegroups.com> |
| In reply to | #452092 |
upsid...@downunder.com wrote: > > > > The gain ( = directivity x efficiency) for a typical loopstick is > very bad in the order of -60 to -80 dB, > ** Compared to what ??? A half wave antenna 150 meters long? > But thanks to the extremely high band noise at LF and MF, > you still get usable SNR with such designs. ** This is not right. Whatever the inherent atmospheric noise at MF, the signal from the transmitter can over-ride it. AM does not have inherently bad s/n unless you are DXing. I have a hi-fi AM tuner that coupled with small frame antenna ( 40x40 cm) is capable of FM like results from good, local broadcasts. It uses just 2 small valves. .... Phil
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| From | upsidedown@downunder.com |
|---|---|
| Date | 2017-03-17 00:58 +0200 |
| Message-ID | <484mcc1tcqc1rjptog640aijrhiq443o9n@4ax.com> |
| In reply to | #452096 |
On Thu, 16 Mar 2017 00:17:55 -0700 (PDT), Phil Allison <pallison49@gmail.com> wrote: >upsid...@downunder.com wrote: >> >> >> >> The gain ( = directivity x efficiency) for a typical loopstick is >> very bad in the order of -60 to -80 dB, >> > > ** Compared to what ??? I when the gain is worse than -60 dB, it doesn't matter if the reference is dBd or dBi, the difference is only 2 dB :-) > > A half wave antenna 150 meters long? The effective hight for a short antenna /in this case strung into the trees) is only a few dBs below a full size antenna. For derivation, check John.D. Kraus: "Antennas" > > >> But thanks to the extremely high band noise at LF and MF, >> you still get usable SNR with such designs. > >** This is not right. > >Whatever the inherent atmospheric noise at MF, the signal from the transmitter can over-ride it. > >AM does not have inherently bad s/n unless you are DXing. Depending of the definition of DXing , much of the MF/HF stations in Europe has been shut down. Of course Russian propaganda stations are still going strong, but wants to listen to them :-). >I have a hi-fi AM tuner that coupled with small frame antenna ( 40x40 cm) is capable of FM like results from good, local broadcasts. You must be living very close to the transmitter. - On SSB the SNR is the same as the RF SNR. To get 10 dB improvement in the audio SNR, you need 10 times more power- - For strong (local) signals, this also applies to AM - For FM transmissions the audio SNR is FM_gain + CNR (carrier to noise ratio). Above the FM threshold the cost of increasing the SNR is as costly as on AM - for digital, going from 48 dB to 96 dB (8 to 16 bits) SNR only requires doubling the bandwidth and hence transmitter power. > >It uses just 2 small valves. > > > >.... Phil >
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| From | Phil Allison <pallison49@gmail.com> |
|---|---|
| Date | 2017-03-16 16:19 -0700 |
| Message-ID | <5fcc55ec-d716-4ac7-89d0-14275882fe9f@googlegroups.com> |
| In reply to | #452184 |
upsid...@downunder.com wrote: Phil Allison > >> > >> The gain ( = directivity x efficiency) for a typical loopstick is > >> very bad in the order of -60 to -80 dB, > >> > > > > ** Compared to what ??? > > I when the gain is worse than -60 dB, ** You have not understood the question, by trying too hard to be a smartarse. > > > > A half wave antenna 150 meters long? > > The effective hight for a short antenna /in this case strung into the > trees) is only a few dBs below a full size antenna. For derivation, > check John.D. Kraus: "Antennas" ** Try actually answering the question sometime - dickhead. > > > >> But thanks to the extremely high band noise at LF and MF, > >> you still get usable SNR with such designs. > > > >** This is not right. > > > >Whatever the inherent atmospheric noise at MF, the signal from the transmitter can over-ride it. > > > >AM does not have inherently bad s/n unless you are DXing. > > Depending of the definition of DXing , > ** FFS - you have the attention span of a gnat. > > >I have a hi-fi AM tuner that coupled with small frame antenna > >( 40x40 cm) is capable of FM like results from good, local broadcasts. > > You must be living very close to the transmitter. > ** No more than the vast majority of people living in Sydney. ( snip more smartase shite) You are so full of bollocks it smells. .... Phil
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