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RF Systems "MLB" {Magnetic Longwire Balun} - What Is It ?
For One and All,
. RF Systems "MLB" {Magnetic Longwire Balun} - What Is It ? http://groups.yahoo.com/group/Shortw.../message/11762 . I 'guess' a RF Systems "MLB" {Magnetic Longwire Balun} http://www.rf-systems.nl/pdf/mlb.pdf http://www.universal-radio.com/catalog/sw_ant/1484.html http://www.hard-core-dx.com/nordicdx...d/magbal1.html http://www.universal-radio.com/catalog/sw_ant/1465.html http://www.xs4all.nl/~deltron/MLB-ENG.pdf http://www.universal-radio.com/catalog/sw_ant/4067.html http://www.qsl.net/wars/construct/mlb.htm http://www.universal-radio.com/catal.../1465chrt.html http://www.hard-core-dx.com/nordicdx...d/magbal2.html Can be looked at as a Series-&-Parallel Transformer with a common ground for both Windings. A C | | / | / | / \ / \ / | / | | | -G- A = Antenna {Longwire} Termenation/Connection C - Coax Cable {Center-Conductor} Connection G = Ground Coax Cable {Outer-Shield} Connection . A-to-G and C-to-G would read as near DC "Shorts" since they are short pieces of Copper Wire. - - - Also A-to-C would read as a near DC Short due to the Series Circuit Path. . Inductively [AC & RF ] A-to-G and C-to-G would each read as Reactance and function as an AC Parallel Circuit Path. . Two MLBs : RF Systems -v- RF Junkie http://www.suertenich.com/html/radio...ire_balun.html Shortwave Listener (SWL) Longwire / Random Wire [ SWL Antenna Matchers by RF Junkie ] http://www.geocities.com/qrp_baluns/LM.html http://www.geocities.com/qrp_baluns/LMZ-50.html http://www.geocities.com/qrp_baluns/LMZ-75.html http://www.geocities.com/qrp_baluns/app-lmz-75.html . List - Magnetic Longwire Baluns (MLBs) MLBs = http://tinyurl.com/yhgz2e http://wiki.radioreference.com/index...uns_.28MLBs.29 "Secrets of the Universe Revealed" Look - Inside View of the RF Systems Magnetic Longwire Balun (MLB) - X-Rays and More . . . http://www.remeeus.eu/english/hamradio/mlb.htm . "That Something Extra" Read - The RF Systems Magnetic Longwire Balun and N8KDV's 10:1 Matching Transformer http://www.iserv.net/~n8kdv/xfmr.htm mlb - at least that is the way i see it - iane ~ RHF . . I-B Somewhere on "The Big Blue Marble" http://en.wikipedia.org/wiki/The_Blue_Marble { Earth - The Third Planet from the Sun } http://en.wikipedia.org/wiki/Third_planet_from_the_Sun . Shortwave Listener Antennas = http://tinyurl.com/ogvcf http://groups.yahoo.com/group/Shortwave-SWL-Antenna/ SWL Antenna Group = http://tinyurl.com/ogvcf . The Shortwave Listener's Blessing : SWL BLESSING = http://tinyurl.com/s2bjm May You Never Tire of Listening to the Radio and Always have Strong Signals and Noise Free Reception ~ RHF {ibid} http://groups.yahoo.com/group/Shortw...a/message/9233 . Tous Sont Bienvenus ! - - - Groupe par Radio d'auditeur d'onde courte pour des Antennes de SWL http://groups.yahoo.com/group/Shortwave-SWL-Antenna/ . Alle Sind Willkommen ! - - - Shortwave Radiozuhörer Gruppe für SWL Antennen http://groups.yahoo.com/group/Shortwave-SWL-Antenna/ . Tutti Sono Benvenuti ! - - - Gruppo Radiofonico dell'ascoltatore di onda corta per le Antenne di SWL http://groups.yahoo.com/group/Shortwave-SWL-Antenna/ . Todos São Bem-vindos ! - - - Grupo de Rádio do ouvinte do Shortwave para Antenas de SWL http://groups.yahoo.com/group/Shortwave-SWL-Antenna/ . Все *адушны ! - - - Группа оператора на приеме коротковолнового диапазона Radio для Aнтенн SWL http://groups.yahoo.com/group/Shortwave-SWL-Antenna/ . ¡Todos Son Agradables! - - - Grupo de Radio del oyente de la onda corta para las Antenas de SWL http://groups.yahoo.com/group/Shortwave-SWL-Antenna/ . = = = = Plain Old American-English Translation = = = = All are Welcome - - - To Join the Shortwave Listeners (SWL) Antenna Group on YAHOO ! http://groups.yahoo.com/group/Shortwave-SWL-Antenna/ . | | | / \ ........!....... |
RF Systems "MLB" {Magnetic Longwire Balun} - What Is It ?
On 23 Dec 2006 01:06:24 -0800, "RHF"
wrote: For One and All, Can be looked at as a Series-&-Parallel Transformer with a common ground for both Windings. A C | | / | / | / \ / \ / | / | | | -G- A = Antenna {Longwire} Termenation/Connection C - Coax Cable {Center-Conductor} Connection G = Ground Coax Cable {Outer-Shield} Connection . A-to-G and C-to-G would read as near DC "Shorts" since they are short pieces of Copper Wire. - - - Also A-to-C would read as a near DC Short due to the Series Circuit Path. . Inductively [AC & RF ] A-to-G and C-to-G would each read as Reactance and function as an AC Parallel Circuit Path. . Two MLBs : RF Systems -v- RF Junkie http://www.geocities.com/qrp_baluns/LM.html http://www.geocities.com/qrp_baluns/LMZ-50.html http://www.geocities.com/qrp_baluns/LMZ-75.html http://www.geocities.com/qrp_baluns/app-lmz-75.html http://www.palomar-engineers.com/MLB-1/mlb-1.html List - Magnetic Longwire Baluns (MLBs) MLBs = http://tinyurl.com/yhgz2e http://wiki.radioreference.com/index...uns_.28MLBs.29 "Secrets of the Universe Revealed" Look - Inside View of the RF Systems Magnetic Longwire Balun (MLB) - X-Rays and More . . . http://www.remeeus.eu/english/hamradio/mlb.htm . "That Something Extra" Read - The RF Systems Magnetic Longwire Balun and N8KDV's 10:1 Matching Transformer http://www.iserv.net/~n8kdv/xfmr.htm mlb - at least that is the way i see it - iane ~ RHF . . I-B Somewhere on "The Big Blue Marble" http://en.wikipedia.org/wiki/The_Blue_Marble { Earth - The Third Planet from the Sun } http://en.wikipedia.org/wiki/Third_planet_from_the_Sun . Shortwave Listener Antennas = http://tinyurl.com/ogvcf http://groups.yahoo.com/group/Shortwave-SWL-Antenna/ SWL Antenna Group = http://tinyurl.com/ogvcf . The Shortwave Listener's Blessing : SWL BLESSING = http://tinyurl.com/s2bjm May You Never Tire of Listening to the Radio and Always have Strong Signals and Noise Free Reception ~ RHF {ibid} http://groups.yahoo.com/group/Shortw...a/message/9233 . Tous Sont Bienvenus ! - - - Groupe par Radio d'auditeur d'onde courte pour des Antennes de SWL http://groups.yahoo.com/group/Shortwave-SWL-Antenna/ . Alle Sind Willkommen ! - - - Shortwave Radiozuhrer Gruppe fr SWL Antennen http://groups.yahoo.com/group/Shortwave-SWL-Antenna/ . Tutti Sono Benvenuti ! - - - Gruppo Radiofonico dell'ascoltatore di onda corta per le Antenne di SWL http://groups.yahoo.com/group/Shortwave-SWL-Antenna/ . Todos So Bem-vindos ! - - - Grupo de Rdio do ouvinte do Shortwave para Antenas de SWL http://groups.yahoo.com/group/Shortwave-SWL-Antenna/ . ??? ??????? ! - - - ?????? ????????? ?? ?????? ???????????????? ????????? Radio ??? A????? SWL http://groups.yahoo.com/group/Shortwave-SWL-Antenna/ . Todos Son Agradables! - - - Grupo de Radio del oyente de la onda corta para las Antenas de SWL http://groups.yahoo.com/group/Shortwave-SWL-Antenna/ . = = = = Plain Old American-English Translation = = = = All are Welcome - - - To Join the Shortwave Listeners (SWL) Antenna Group on YAHOO ! http://groups.yahoo.com/group/Shortwave-SWL-Antenna/ . | | | / \ .......!....... |
RF Systems "MLB" {Magnetic Longwire Balun} - What Is It ?
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RF Systems "MLB" {Magnetic Longwire Balun} - What Is It ?
John Smith wrote: RHF wrote: ... .......!....... http://www.hard-core-dx.com/nordicdx.../9_1balun.html And an alternative to that, and the method in use here, is to have a separate ground coming off the balun and then ground the coax feed where it enters the house. Using that method there is no connection between the two windings on the toroid. dxAce Michigan USA |
RF Systems "MLB" {Magnetic Longwire Balun} - What Is It ?
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RF Systems "MLB" {Magnetic Longwire Balun} - What Is It ?
Next thing we know,,,, AWOL MORON QUEER BISEXUAL GAY bush will be
declareing Wire a Weapon of Mass Destruction and it will be illegal for anybody in the World to own any Wire. cuhulin |
RF Systems "MLB" {Magnetic Longwire Balun} - What Is It ?
RHF wrote: For One and All, . RF Systems "MLB" {Magnetic Longwire Balun} - What Is It ? snip I've got one, not that I use it anymore. It seems to be the only balun with low frequency specs. I did MW reception with it, but I never compared it to the ham baluns. Get a Wellbrook. |
RF Systems "MLB" {Magnetic Longwire Balun} - What Is It ?
wrote:
... Get a Wellbrook. http://www.wellbrook.uk.com/longwire.html Interesting instructions. Looks like the "correct way" utilizes a 9:1 voltage balun between feed and antenna and a 1:1 current balun (called isolator "AFI 5030" in the diagram) between other end of feed and the rig. Regards, JS |
RF Systems "MLB" {Magnetic Longwire Balun} - What Is It ?
|
RF Systems "MLB" {Magnetic Longwire Balun} - What Is It ?
John Smith wrote: wrote: ... Get a Wellbrook. http://www.wellbrook.uk.com/longwire.html Interesting instructions. Looks like the "correct way" utilizes a 9:1 voltage balun between feed and antenna and a 1:1 current balun (called isolator "AFI 5030" in the diagram) between other end of feed and the rig. Regards, JS Sorry 'bout that cheif. Get a Wellbrook active loop. I use the ALA100. I forgot Wellbrook made that balun. |
RF Systems "MLB" {Magnetic Longwire Balun} - What Is It ?
On Dec 23, 8:54 am, dxAce wrote: John Smith wrote: RHF wrote: ... .......!....... http://www.hard-core-dx.com/nordicdx...1balun.htmlAnd an alternative to that, and the method in use here, is to have a separate ground coming off the balun and then ground the coax feed where it enters the house. Using that method there is no connection between the two windings on the toroid. dxAce Michigan USA DX Ace - Hope You Enjoyed "That Something Extra" ~ RHF Read - The RF Systems Magnetic Longwire Balun and N8KDV's 10:1 Matching Transformer http://www.iserv.net/~n8kdv/xfmr.htm |
RF Systems "MLB" {Magnetic Longwire Balun} - What Is It ?
On Dec 23, 10:07 pm, John Smith wrote: wrote: ... Get a Wellbrook.http://www.wellbrook.uk.com/longwire.html Interesting instructions. Looks like the "correct way" utilizes a 9:1 voltage balun between feed and antenna and a 1:1 current balun (called isolator "AFI 5030" in the diagram) between other end of feed and the rig. Regards, JS JS - That's about right. ~ RHF |
RF Systems "MLB" {Magnetic Longwire Balun} - What Is It ?
On Dec 23, 9:34 pm, wrote: RHF wrote: For One and All, . RF Systems "MLB" {Magnetic Longwire Balun} - What Is It ?snip I've got one, not that I use it anymore. It seems to be the only balun with low frequency specs. I did MW reception with it, but I never compared it to the ham baluns. - Get a Wellbrook. M-Sushi - Is that like Get-A-Life ! :o) ~ RHF FWIW - The Wellbrook "Universal Magnetic Balun" [ UMB ] is a Receiving Antenna Balun with a 9:1 impedance ratio. http://www.wellbrook.uk.com/UMB.html Note - Universal Magnetic Balun [UMB] is specifically designed to Reduce Noise, especially mains borne, by isolating the feeder winding of the Balun [Matching Transformer} from the Antenna. http://www.wellbrook.uk.com/longwire.html - - - Doing "IT" the Right Way ! |
The "Correct Way" To Install A Longwire Antenna And Balun By Wellbrook - Using The Far-End Feed-Point Concept
On Dec 23, 10:07*pm, John Smith wrote: wrote:* ... Get a Wellbrook.http://www.wellbrook.uk.com/longwire.html Interesting instructions. *Looks like the "correct way" utilizes a 9:1 voltage balun between feed and antenna and a 1:1 current balun (called isolator "AFI 5030" in the diagram) between other end of feed and the rig. Regards, JS JS, The "Correct Way" to Install a Longwire Antenna and Balun by Wellbrook - Using the Far-End Feed-Point Concept http://groups.yahoo.com/group/Shortw.../message/11773 The "Correct Way" to Install a Longwire Antenna and Balun by Wellbrook = http://www.wellbrook.uk.com/longwire.html We have all most likely done it the wrong way more than once . . . A key-point that Wellbrook makes is the Five Metre "Noise Zone" that exists around a House and getting the Wire Antenna Element away {out} from this area. http://www.wellbrook.uk.com/longwire.html Note - The above "Correct Way" installation will ensure that the Wire Antenna Element is 'outside' the local Noise Zone which extends up to Five Metres (5m) around the House. Also the noise pickup is lower with the feeder close to the ground -or- buried under the ground a few inches. -Why- The Antenna and the Balun are within the Local Noise Zone RFI & EMF {Interference Area} that surrounds most buildings up to distance of Five Metres (5m) which is about 16 Feet. all i ask for is five metres beyond the noise - iane ~ RHF . . I-B Somewhere on "The Big Blue Marble" http://en.wikipedia.org/wiki/The_Blue_Marble { Earth - The Third Planet from the Sun } http://en.wikipedia.org/wiki/Third_planet_from_the_Sun . Shortwave Listener Antennas = http://tinyurl.com/ogvcf http://groups.yahoo.com/group/Shortwave-SWL-Antenna/ SWL Antenna Group = http://tinyurl.com/ogvcf . The Shortwave Listener's Blessing : SWL BLESSING = http://tinyurl.com/s2bjm May You Never Tire of Listening to the Radio and Always have Strong Signals and Noise Free Reception ~ RHF {ibid} http://groups.yahoo.com/group/Shortw...a/message/9233 . Tous Sont Bienvenus ! - - - Groupe par Radio d'auditeur d'onde courte pour des Antennes de SWL http://groups.yahoo.com/group/Shortwave-SWL-Antenna/ . Alle Sind Willkommen ! - - - Shortwave Radiozuhörer Gruppe für SWL Antennen http://groups.yahoo.com/group/Shortwave-SWL-Antenna/ . Tutti Sono Benvenuti ! - - - Gruppo Radiofonico dell'ascoltatore di onda corta per le Antenne di SWL http://groups.yahoo.com/group/Shortwave-SWL-Antenna/ . Todos São Bem-vindos ! - - - Grupo de Rádio do ouvinte do Shortwave para Antenas de SWL http://groups.yahoo.com/group/Shortwave-SWL-Antenna/ . Все *адушны ! - - - Группа оператора на приеме коротковолнового диапазона Radio для Aнтенн SWL http://groups.yahoo.com/group/Shortwave-SWL-Antenna/ . ¡Todos Son Agradables! - - - Grupo de Radio del oyente de la onda corta para las Antenas de SWL http://groups.yahoo.com/group/Shortwave-SWL-Antenna/ . = = = = Plain Old American-English Translation = = = = All are Welcome - - - To Join the Shortwave Listeners (SWL) Antenna Group on YAHOO ! http://groups.yahoo.com/group/Shortwave-SWL-Antenna/ . | | | / \ ........!....... |
RF Systems "MLB" {Magnetic Longwire Balun} - What Is It ?
On 24 Dec 2006 00:32:08 -0800, "RHF"
wrote: On Dec 23, 9:34 pm, wrote: RHF wrote: For One and All, . RF Systems "MLB" {Magnetic Longwire Balun} - What Is It ?snip I've got one, not that I use it anymore. It seems to be the only balun with low frequency specs. I did MW reception with it, but I never compared it to the ham baluns. - Get a Wellbrook. M-Sushi - Is that like Get-A-Life ! :o) ~ RHF FWIW - The Wellbrook "Universal Magnetic Balun" [ UMB ] is a Receiving Antenna Balun with a 9:1 impedance ratio. http://www.wellbrook.uk.com/UMB.html Note - Universal Magnetic Balun [UMB] is specifically designed to Reduce Noise, especially mains borne, by isolating the feeder winding of the Balun [Matching Transformer} from the Antenna. http://www.wellbrook.uk.com/longwire.html - - - Doing "IT" the Right Way ! How does it distinguish between noise and station signals? Pretty smart balun. Bob k5qwg . . . . |
RF Systems "MLB" {Magnetic Longwire Balun} - What Is It ?
Bob Miller wrote: On 24 Dec 2006 00:32:08 -0800, "RHF" wrote: On Dec 23, 9:34 pm, wrote: RHF wrote: For One and All, . RF Systems "MLB" {Magnetic Longwire Balun} - What Is It ?snip I've got one, not that I use it anymore. It seems to be the only balun with low frequency specs. I did MW reception with it, but I never compared it to the ham baluns. - Get a Wellbrook. M-Sushi - Is that like Get-A-Life ! :o) ~ RHF FWIW - The Wellbrook "Universal Magnetic Balun" [ UMB ] is a Receiving Antenna Balun with a 9:1 impedance ratio. http://www.wellbrook.uk.com/UMB.html Note - Universal Magnetic Balun [UMB] is specifically designed to Reduce Noise, especially mains borne, by isolating the feeder winding of the Balun [Matching Transformer} from the Antenna. http://www.wellbrook.uk.com/longwire.html - - - Doing "IT" the Right Way ! How does it distinguish between noise and station signals? Pretty smart balun. Bob k5qwg Much of the noise you encounter is generated in your own house. Any balun allows you to run coax near these noise generators, which is better than just running the bare wire antenna by them. . . . . |
RF Systems "MLB" {Magnetic Longwire Balun} - What Is It ?
I have to head on over across Highway 80 to Metrocenter Mall.Last minute
Christmas shopping stuff. cuhulin,the last minute dude |
RF Systems "MLB" {Magnetic Longwire Balun} - What Is It ?
In article . com,
wrote: John Smith wrote: wrote: ... Get a Wellbrook. http://www.wellbrook.uk.com/longwire.html Interesting instructions. Looks like the "correct way" utilizes a 9:1 voltage balun between feed and antenna and a 1:1 current balun (called isolator "AFI 5030" in the diagram) between other end of feed and the rig. Regards, JS If the feeder is buried, (coax), then is the isolator required? Brian You may not need the isolator with the coax buried. There are to many variables to know for sure such as the soil conductivity. Best bet is to use one. You could also just clamp on some ferrite cores on the coax to see if it makes a difference. The diagram shows the antenna going back toward the house. This might be OK if that part of the house is electrically quiet but if not you just wasted your time with the work on the lead in. It would be better to attach the antenna away from the house so the entire antenna is away from noise sources. -- Telamon Ventura, California |
RF Systems "MLB" {Magnetic Longwire Balun} - What Is It ?
On Dec 24, 8:57 am, wrote: Bob Miller wrote: On 24 Dec 2006 00:32:08 -0800, "RHF" wrote: On Dec 23, 9:34 pm, wrote: RHF wrote: For One and All, . RF Systems "MLB" {Magnetic Longwire Balun} - What Is It ?snip I've got one, not that I use it anymore. It seems to be the only balun with low frequency specs. I did MW reception with it, but I never compared it to the ham baluns. - Get a Wellbrook. M-Sushi - Is that like Get-A-Life ! :o) ~ RHF FWIW - The Wellbrook "Universal Magnetic Balun" [ UMB ] is a Receiving Antenna Balun with a 9:1 impedance ratio. http://www.wellbrook.uk.com/UMB.html Note - Universal Magnetic Balun [UMB] is specifically designed to Reduce Noise, especially mains borne, by isolating the feeder winding of the Balun [Matching Transformer} from the Antenna. http://www.wellbrook.uk.com/longwire.html - - - Doing "IT" the Right Way ! How does it distinguish between noise and station signals? Pretty smart balun. Bob k5qwg - Much of the noise you encounter is generated in your own house. -R- That is true. - Any balun allows you to run coax near these noise generators, - which is better than just running the bare wire antenna by them. -R- OK - But why not move the Balun and Wire Antenna Element out-and-away from the house and the noise. Again a key-point that Wellbrook makes is the Five Metre (5m) {which is about 16 Feet} "Noise Zone" that exists around a House and getting the Wire Antenna Element away {out} from this area. = http://www.wellbrook.uk.com/longwire.html yes i said it again - iane ~ RHF |
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