|
Making a Balun
I'd like to make a 1:1 balun, similar to what you'd buy from Van Gorden
Engineering. Anyone know of online designs/prints/instructions? Thanks |
"Jayson Davis" wrote in message
... I'd like to make a 1:1 balun, similar to what you'd buy from Van Gorden Engineering. Anyone know of online designs/prints/instructions? Thanks Current or voltage balun? The Wireman has the parts -- if you wish to build your own. http://thewireman.com/baluns.html gb |
gb wrote:
Current or voltage balun? Why would anyone want to use a voltage balun in an antenna system? Roy Lewallen, W7EL |
Roy Lewallen wrote:
gb wrote: Current or voltage balun? Why would anyone want to use a voltage balun in an antenna system? Roy Lewallen, W7EL I'm not certain I understand the difference. I thought the only type was current and the purpose is to stop common-mode current in the feedline. Of course, I'm new at this, so I could be wrong. |
Jayson Davis wrote:
I'd like to make a 1:1 balun, similar to what you'd buy from Van Gorden Engineering. Anyone know of online designs/prints/instructions? Try the Amidon AB240 balun kit for $9. -- 73, Cecil http://www.qsl.net/w5dxp ----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups ----= East and West-Coast Server Farms - Total Privacy via Encryption =---- |
Here is a url to a page I put up--shows both a 1:1 and a 4:1 balun--winding
diagrams are below each, respectively... Warmest regards, John "Jayson Davis" wrote in message ... I'd like to make a 1:1 balun, similar to what you'd buy from Van Gorden Engineering. Anyone know of online designs/prints/instructions? Thanks |
Yep... and here is that link... grin
http://blake.prohosting.com/mailguy2/balun2.JPG John "John Smith" wrote in message ... Here is a url to a page I put up--shows both a 1:1 and a 4:1 balun--winding diagrams are below each, respectively... Warmest regards, John "Jayson Davis" wrote in message ... I'd like to make a 1:1 balun, similar to what you'd buy from Van Gorden Engineering. Anyone know of online designs/prints/instructions? Thanks |
Read http://eznec.com/Amateur/Articles/Baluns.pdf and you'll know what
the difference is, and hopefully why a voltage balun isn't the best to use for antenna applications. Roy Lewallen, W7EL Jayson Davis wrote: Roy Lewallen wrote: gb wrote: Current or voltage balun? Why would anyone want to use a voltage balun in an antenna system? Roy Lewallen, W7EL I'm not certain I understand the difference. I thought the only type was current and the purpose is to stop common-mode current in the feedline. Of course, I'm new at this, so I could be wrong. |
This is a quick/short/sweet explaination to bring you up to speed quick!
http://home.datacomm.ch/hb9abx/currentbalun.htm Warmest regards, John "Jayson Davis" wrote in message ... I'd like to make a 1:1 balun, similar to what you'd buy from Van Gorden Engineering. Anyone know of online designs/prints/instructions? Thanks |
John Smith wrote:
Here is a url to a page I put up--shows both a 1:1 and a 4:1 balun--winding diagrams are below each, respectively... Don't bother to look - they are both voltage baluns. (And the drawings have been scanned from someone else's copyright material.) -- 73 from Ian GM3SEK 'In Practice' columnist for RadCom (RSGB) http://www.ifwtech.co.uk/g3sek |
Current baluns:
If you have a ferrite rod from an old am radio, this guy shows you a cheap 1:1 balun: http://www.arising.com.au/people/Hol...ph/CMBalun.htm If you already have a toroid you wish to use, just wrap it the same, a bifilar winding, with the two starting ends hooked to your coax connector, other two ends to your antenna. You will want the inductive reactance of the winding to be ~4X the impedance of the coax (or antenna) at the lowest frequency of operation. This will be computed using the al factor from the specific toroid core you have... This works for me... and is a simple way to remember/do it... if others have a simplier/better way--I am sure they will comment... Warmest regards, John "Jayson Davis" wrote in message ... I'd like to make a 1:1 balun, similar to what you'd buy from Van Gorden Engineering. Anyone know of online designs/prints/instructions? Thanks |
.... as a matter of fact, they are scanned from "copyright expired"
material... I took the time to bring everyone up to speed on copyright here... and even to know the difference between expired and not... for some strange reason some have difficulty dealing with this... He is correct about it being a voltage balun, which I believe is what you first asked about, at least that is what the balun you referenced looked like to me--I make mistakes and could have been mistaken... however, there is also a post from me in this thead on the current balun you can use... when you read my post on the quick-start on the differences for voltage/current baluns you can decide for yourself--on what you need... baluns are a very simple thing, don't know why so much mystery wants to end up wrapped about 'em... Warmest regards, John "Ian White GM3SEK" wrote in message ... John Smith wrote: Here is a url to a page I put up--shows both a 1:1 and a 4:1 balun--winding diagrams are below each, respectively... Don't bother to look - they are both voltage baluns. (And the drawings have been scanned from someone else's copyright material.) -- 73 from Ian GM3SEK 'In Practice' columnist for RadCom (RSGB) http://www.ifwtech.co.uk/g3sek |
John Smith wrote:
... as a matter of fact, they are scanned from "copyright expired" material... If so, then I apologise. But... He is correct about it being a voltage balun, which I believe is what you first asked about, at least that is what the balun you referenced looked like to me--I make mistakes and could have been mistaken... however, there is also a post from me in this thead on the current balun you can use... when you read my post on the quick-start on the differences for voltage/current baluns you can decide for yourself--on what you need... baluns are a very simple thing, don't know why so much mystery wants to end up wrapped about 'em... Might it possibly be because people persist in copying and re-re-re-publishing old, incorrect information? -- 73 from Ian GM3SEK 'In Practice' columnist for RadCom (RSGB) http://www.ifwtech.co.uk/g3sek |
I'd like to make a 1:1 balun, =========================== Wind about a dozen turns of twin, stranded, 18 AWG, clear-plastic-insulation, speaker cable (or similar) around a 2" diameter ferrite ring. About 3/8" cross-section. Permeability 200 to 500. And there you have it. Speaker cable is better than coax on both mechanical and electrical grounds. ---- Reg, G4FGQ. |
Well, nice of you to worry about me copying, copyrighted work and suffering
a penality, but let me worry about that... and MOST technical docs have fallen to public domain QUICKLY--especially this stuff which was cutting edge technology--when my grandfather was a boy... There is also "fair use", you may want to read up on it... since the drawing I pasted here is less than a page (much less) it OBIVIOUSLY would fall under this--and I would be covered yet again... Most importantly is the necessity to get facts and info into the hands needing it, in a form which they can understand--in a manner which does not chase them off.. something I DON'T see happening here. Warmest regards, John "J. Mc Laughlin" wrote in message ... Dear "John Smith" The probability that you copied works that were not covered by copyright is minuscule. For such a work not to be covered by copyright it would have had to be declared in the public domain by the author or publisher. Here is a link to the Copyright Office that provides some authoritative information about low long copyright protection lasts: http://www.copyright.gov/circs/circ1.html#hlc Having expressed disdain for lawyers, it is unlikely that you are a lawyer, whatever and whoever you are. The Patent Office lists three patent attorneys with the name of John Smith. I doubt that you are one of them. When you copy works that are almost surely copyrighted and provide no attribution, you encourage persons with an interest in the works to track you down. Not wise. Mac N8TT -- J. Mc Laughlin; Michigan U.S.A. Home: "John Smith" wrote in message ... ... as a matter of fact, they are scanned from "copyright expired" material... I took the time to bring everyone up to speed on copyright here... and even to know the difference between expired and not... for some strange reason some have difficulty dealing with this... He is correct about it being a voltage balun, which I believe is what you first asked about, at least that is what the balun you referenced looked like to me--I make mistakes and could have been mistaken... however, there is also a post from me in this thead on the current balun you can use... when you read my post on the quick-start on the differences for voltage/current baluns you can decide for yourself--on what you need... baluns are a very simple thing, don't know why so much mystery wants to end up wrapped about 'em... Warmest regards, John "Ian White GM3SEK" wrote in message ... John Smith wrote: Here is a url to a page I put up--shows both a 1:1 and a 4:1 balun--winding diagrams are below each, respectively... Don't bother to look - they are both voltage baluns. (And the drawings have been scanned from someone else's copyright material.) -- 73 from Ian GM3SEK 'In Practice' columnist for RadCom (RSGB) http://www.ifwtech.co.uk/g3sek |
Ferrite ring? Now where would I ever find one of those--last guy told me to
buy all these dern toroids!!! grin Good morning Reg! Warmest regards, John "Reg Edwards" wrote in message ... I'd like to make a 1:1 balun, =========================== Wind about a dozen turns of twin, stranded, 18 AWG, clear-plastic-insulation, speaker cable (or similar) around a 2" diameter ferrite ring. About 3/8" cross-section. Permeability 200 to 500. And there you have it. Speaker cable is better than coax on both mechanical and electrical grounds. ---- Reg, G4FGQ. |
"Roy Lewallen" wrote in message ... Read http://eznec.com/Amateur/Articles/Baluns.pdf and you'll know what the difference is, and hopefully why a voltage balun isn't the best to use for antenna applications. Roy Lewallen, W7EL I just printed this out. Looks really good. BTW, for cores and balun kits he should go to www.amidoncorp.com . Tam/WB2TT ............................ |
John, the trouble is at my end, caused by my nincompoop of a
dis-service provider. If previous experience is any guide, it will take weeks to sort it out. When it comes to managing Windows, OE and the Internet, I'm a mere novice. ( The most important thing about ferrite rings is their size. You can't get a dozen turns of speaker cable on 5/8" diameter rings. ) ---- Reg. ============================== "John Smith" wrote in message ... Ferrite ring? Now where would I ever find one of those--last guy told me to buy all these dern toroids!!! grin Good morning Reg! Warmest regards, John "Reg Edwards" wrote in message ... I'd like to make a 1:1 balun, =========================== Wind about a dozen turns of twin, stranded, 18 AWG, clear-plastic-insulation, speaker cable (or similar) around a 2" diameter ferrite ring. About 3/8" cross-section. Permeability 200 to 500. And there you have it. Speaker cable is better than coax on both mechanical and electrical grounds. ---- Reg, G4FGQ. |
Dear "John Smith"
Fair-use is one of the most complex parts of the law. I have studied it and applied it for more many years than you have been a poseur. It has certainly caused considerable amusement among the knowledgeable people in this group to read you suggesting that I read up on the subject. Your pretending to practice law would only be amusing if it were not that some reading what you write might believe you. You copy. You claim it is protected under the doctrine of fair-use and yet you provide no attribution nor context that could support fair-use. That is old fashion plagiarizing. You then start to argue that such theft is for the good of the recipient. All that can be said is that you must have had a mother, and she would be ashamed. Mac N8TT -- J. Mc Laughlin; Michigan U.S.A. Home: "John Smith" wrote in message ... Well, nice of you to worry about me copying, copyrighted work and suffering a penality, but let me worry about that... and MOST technical docs have fallen to public domain QUICKLY--especially this stuff which was cutting edge technology--when my grandfather was a boy... There is also "fair use", you may want to read up on it... since the drawing I pasted here is less than a page (much less) it OBIVIOUSLY would fall under this--and I would be covered yet again... Most importantly is the necessity to get facts and info into the hands needing it, in a form which they can understand--in a manner which does not chase them off.. something I DON'T see happening here. Warmest regards, John "J. Mc Laughlin" wrote in message ... Dear "John Smith" The probability that you copied works that were not covered by copyright is minuscule. For such a work not to be covered by copyright it would have had to be declared in the public domain by the author or publisher. Here is a link to the Copyright Office that provides some authoritative information about low long copyright protection lasts: http://www.copyright.gov/circs/circ1.html#hlc Having expressed disdain for lawyers, it is unlikely that you are a lawyer, whatever and whoever you are. The Patent Office lists three patent attorneys with the name of John Smith. I doubt that you are one of them. When you copy works that are almost surely copyrighted and provide no attribution, you encourage persons with an interest in the works to track you down. Not wise. Mac N8TT -- J. Mc Laughlin; Michigan U.S.A. Home: "John Smith" wrote in message ... ... as a matter of fact, they are scanned from "copyright expired" material... I took the time to bring everyone up to speed on copyright here... and even to know the difference between expired and not... for some strange reason some have difficulty dealing with this... He is correct about it being a voltage balun, which I believe is what you first asked about, at least that is what the balun you referenced looked like to me--I make mistakes and could have been mistaken... however, there is also a post from me in this thead on the current balun you can use... when you read my post on the quick-start on the differences for voltage/current baluns you can decide for yourself--on what you need... baluns are a very simple thing, don't know why so much mystery wants to end up wrapped about 'em... Warmest regards, John "Ian White GM3SEK" wrote in message ... John Smith wrote: Here is a url to a page I put up--shows both a 1:1 and a 4:1 balun--winding diagrams are below each, respectively... Don't bother to look - they are both voltage baluns. (And the drawings have been scanned from someone else's copyright material.) -- 73 from Ian GM3SEK 'In Practice' columnist for RadCom (RSGB) http://www.ifwtech.co.uk/g3sek |
In article ,
John Smith wrote: | Well, nice of you to worry about me copying, copyrighted work and suffering | a penality, but let me worry about that... and MOST technical docs have | fallen to public domain QUICKLY--especially this stuff which was cutting | edge technology--when my grandfather was a boy... How do you define QUICKLY? I don't doubt that stuff that was written when your grandfather was a boy has become public domain, but the process is certainly not quick now. http://www.unc.edu/~unclng/public-d.htm may be of some assistance. Right now, things created today fall (involuntarily) into the public domain in 70 years AT THE MINIMUM, and that may go up if Disney buys another extension from Congress. -- Doug McLaren, Mother Earth is not flat! |
In article ,
Doug McLaren wrote: | How do you define QUICKLY? Sorry, I meant to send this as a private email. It's also US specific, if that's not already painfully obvious. To make this antenna relevant, well, antennas have been well understood by people (not me!) for many many years. I've got an ARRL Antenna handbook from the 1950s, and it's not really that different from the one I got from the 1990s. The writing is different, the pictures of cars with antennas mounted are very different (and entertaining), but the general concepts haven't changed much at all. In the old book, VHF and UHF are sort of an afterthought, which I guess makes sense. But the actual antenna concepts are pretty much the same, even though the books are like 40 years apart. (And to make it copyright related, well, my 1950's ARRL antenna book could have entered the public domain. It depends on if it's copyright was renewed or not.) -- Doug McLaren, , AD5RH Life is fraught with opportunities to keep your mouth shut. |
J. McLaughlin:
Let us be friends, I shall take the risk, time for me to share what little I have--my years dwindle at a speed I find frightening--I choose to help someone get a step upon this ladder--even if you should threaten me with death itself... I choose the same... Warmest regards, John "J. Mc Laughlin" wrote in message ... Dear "John Smith" Fair-use is one of the most complex parts of the law. I have studied it and applied it for more many years than you have been a poseur. It has certainly caused considerable amusement among the knowledgeable people in this group to read you suggesting that I read up on the subject. Your pretending to practice law would only be amusing if it were not that some reading what you write might believe you. You copy. You claim it is protected under the doctrine of fair-use and yet you provide no attribution nor context that could support fair-use. That is old fashion plagiarizing. You then start to argue that such theft is for the good of the recipient. All that can be said is that you must have had a mother, and she would be ashamed. Mac N8TT -- J. Mc Laughlin; Michigan U.S.A. Home: "John Smith" wrote in message ... Well, nice of you to worry about me copying, copyrighted work and suffering a penality, but let me worry about that... and MOST technical docs have fallen to public domain QUICKLY--especially this stuff which was cutting edge technology--when my grandfather was a boy... There is also "fair use", you may want to read up on it... since the drawing I pasted here is less than a page (much less) it OBIVIOUSLY would fall under this--and I would be covered yet again... Most importantly is the necessity to get facts and info into the hands needing it, in a form which they can understand--in a manner which does not chase them off.. something I DON'T see happening here. Warmest regards, John "J. Mc Laughlin" wrote in message ... Dear "John Smith" The probability that you copied works that were not covered by copyright is minuscule. For such a work not to be covered by copyright it would have had to be declared in the public domain by the author or publisher. Here is a link to the Copyright Office that provides some authoritative information about low long copyright protection lasts: http://www.copyright.gov/circs/circ1.html#hlc Having expressed disdain for lawyers, it is unlikely that you are a lawyer, whatever and whoever you are. The Patent Office lists three patent attorneys with the name of John Smith. I doubt that you are one of them. When you copy works that are almost surely copyrighted and provide no attribution, you encourage persons with an interest in the works to track you down. Not wise. Mac N8TT -- J. Mc Laughlin; Michigan U.S.A. Home: "John Smith" wrote in message ... ... as a matter of fact, they are scanned from "copyright expired" material... I took the time to bring everyone up to speed on copyright here... and even to know the difference between expired and not... for some strange reason some have difficulty dealing with this... He is correct about it being a voltage balun, which I believe is what you first asked about, at least that is what the balun you referenced looked like to me--I make mistakes and could have been mistaken... however, there is also a post from me in this thead on the current balun you can use... when you read my post on the quick-start on the differences for voltage/current baluns you can decide for yourself--on what you need... baluns are a very simple thing, don't know why so much mystery wants to end up wrapped about 'em... Warmest regards, John "Ian White GM3SEK" wrote in message ... John Smith wrote: Here is a url to a page I put up--shows both a 1:1 and a 4:1 balun--winding diagrams are below each, respectively... Don't bother to look - they are both voltage baluns. (And the drawings have been scanned from someone else's copyright material.) -- 73 from Ian GM3SEK 'In Practice' columnist for RadCom (RSGB) http://www.ifwtech.co.uk/g3sek |
Aye Reg:
And frequently, I push too much power thru too small a toroid (I like "ferrite ring"--much better sound!).... but then, I kinda like 'em when they are just warm to the touch--and I am so fond of the powered iron... but frankly, do have better luck with ferrite--they forgive me much more often... from posts I have read--others feel the same... I am getting your emails now my friend, they are much welcomed here... perhaps we can chat-up pascal now... Warmest regards, John "Reg Edwards" wrote in message ... John, the trouble is at my end, caused by my nincompoop of a dis-service provider. If previous experience is any guide, it will take weeks to sort it out. When it comes to managing Windows, OE and the Internet, I'm a mere novice. ( The most important thing about ferrite rings is their size. You can't get a dozen turns of speaker cable on 5/8" diameter rings. ) ---- Reg. ============================== "John Smith" wrote in message ... Ferrite ring? Now where would I ever find one of those--last guy told me to buy all these dern toroids!!! grin Good morning Reg! Warmest regards, John "Reg Edwards" wrote in message ... I'd like to make a 1:1 balun, =========================== Wind about a dozen turns of twin, stranded, 18 AWG, clear-plastic-insulation, speaker cable (or similar) around a 2" diameter ferrite ring. About 3/8" cross-section. Permeability 200 to 500. And there you have it. Speaker cable is better than coax on both mechanical and electrical grounds. ---- Reg, G4FGQ. |
John Smith wrote:
... but then, I kinda like 'em when they are just warm to the touch--and I am so fond of the powered iron... Does your powdered iron get warm very often? -- 73, Cecil http://www.qsl.net/w5dxp ----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 100,000 Newsgroups ---= East/West-Coast Server Farms - Total Privacy via Encryption =--- |
If I wind for 160m and try to run "real" power on 10 meters--yes Cecil they
do--I expect that is because the design is bad--I know it--but am willing to suffer the lossess... your thoughts? Even 25 watts (when running QRO) spent warming a 2.5 inch core gets it warm after a bit... how can I improve this? Sorry, got called out of town on business... back not... not sure how long... but can answer quicker for now... Warmest regards, John "Cecil Moore" wrote in message ... John Smith wrote: ... but then, I kinda like 'em when they are just warm to the touch--and I am so fond of the powered iron... Does your powdered iron get warm very often? -- 73, Cecil http://www.qsl.net/w5dxp ----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 100,000 Newsgroups ---= East/West-Coast Server Farms - Total Privacy via Encryption =--- |
I "practice" nothing... I simply do, watch me...
Warmest regards, John "J. Mc Laughlin" wrote in message ... Dear "John Smith" Fair-use is one of the most complex parts of the law. I have studied it and applied it for more many years than you have been a poseur. It has certainly caused considerable amusement among the knowledgeable people in this group to read you suggesting that I read up on the subject. Your pretending to practice law would only be amusing if it were not that some reading what you write might believe you. You copy. You claim it is protected under the doctrine of fair-use and yet you provide no attribution nor context that could support fair-use. That is old fashion plagiarizing. You then start to argue that such theft is for the good of the recipient. All that can be said is that you must have had a mother, and she would be ashamed. Mac N8TT -- J. Mc Laughlin; Michigan U.S.A. Home: "John Smith" wrote in message ... Well, nice of you to worry about me copying, copyrighted work and suffering a penality, but let me worry about that... and MOST technical docs have fallen to public domain QUICKLY--especially this stuff which was cutting edge technology--when my grandfather was a boy... There is also "fair use", you may want to read up on it... since the drawing I pasted here is less than a page (much less) it OBIVIOUSLY would fall under this--and I would be covered yet again... Most importantly is the necessity to get facts and info into the hands needing it, in a form which they can understand--in a manner which does not chase them off.. something I DON'T see happening here. Warmest regards, John "J. Mc Laughlin" wrote in message ... Dear "John Smith" The probability that you copied works that were not covered by copyright is minuscule. For such a work not to be covered by copyright it would have had to be declared in the public domain by the author or publisher. Here is a link to the Copyright Office that provides some authoritative information about low long copyright protection lasts: http://www.copyright.gov/circs/circ1.html#hlc Having expressed disdain for lawyers, it is unlikely that you are a lawyer, whatever and whoever you are. The Patent Office lists three patent attorneys with the name of John Smith. I doubt that you are one of them. When you copy works that are almost surely copyrighted and provide no attribution, you encourage persons with an interest in the works to track you down. Not wise. Mac N8TT -- J. Mc Laughlin; Michigan U.S.A. Home: "John Smith" wrote in message ... ... as a matter of fact, they are scanned from "copyright expired" material... I took the time to bring everyone up to speed on copyright here... and even to know the difference between expired and not... for some strange reason some have difficulty dealing with this... He is correct about it being a voltage balun, which I believe is what you first asked about, at least that is what the balun you referenced looked like to me--I make mistakes and could have been mistaken... however, there is also a post from me in this thead on the current balun you can use... when you read my post on the quick-start on the differences for voltage/current baluns you can decide for yourself--on what you need... baluns are a very simple thing, don't know why so much mystery wants to end up wrapped about 'em... Warmest regards, John "Ian White GM3SEK" wrote in message ... John Smith wrote: Here is a url to a page I put up--shows both a 1:1 and a 4:1 balun--winding diagrams are below each, respectively... Don't bother to look - they are both voltage baluns. (And the drawings have been scanned from someone else's copyright material.) -- 73 from Ian GM3SEK 'In Practice' columnist for RadCom (RSGB) http://www.ifwtech.co.uk/g3sek |
John Smith wrote:
If I wind for 160m and try to run "real" power on 10 meters--yes Cecil they do-- I might not have even noticed my leg being pulled but I have a torn ACL that is a very sensitive detector. -- 73, Cecil http://www.qsl.net/w5dxp ----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups ----= East and West-Coast Server Farms - Total Privacy via Encryption =---- |
Doug:
I NEVER want to copy whole books, I can't see a reason for copying whole chapters, seldom would there be a need for whole pages--usually short of a page would suffice--this would fall under "fair use", if proper credit is give author/material... not only that, but take where I gave a URL, I could just have easily digested the info, transformed it into my own words and dumped it here--a little more work--but would only take me minutes longer--literally!!! When give the choice--I gave the man credit for where I had found it... But, make no mistake, I am not here for "hero worship." However, if you don't think I have gotten to here without having stood upon the shoulders of others--you are mistaken--and I DO NOT make that mistake--all my very little and humble learnings have come from other men or women (hell, maybe aliens! grin)--I would suppose, so has yours--unless you are psychic and getting it "directly from God." I could be mistaken, but I think I remember reading articles by Roy Lewellan when I was much younger--my memory is already not as good as once--but I would swear I seen papers/articles, etc from him when I was a teenager--that knowledge has severed me well--as well as I can remember... I am not here to claim other mens knowledge as "original ideas" of my own--rather my whole knowledge is composed of bits and pieces of others--isn't yours? At this point, it would be impossible to tell what bit or what piece has come from who--or when... but I will do the best I can here... someway we will find a way for this to work... Warmest regards, John "Doug McLaren" wrote in message ... In article , Doug McLaren wrote: | How do you define QUICKLY? Sorry, I meant to send this as a private email. It's also US specific, if that's not already painfully obvious. To make this antenna relevant, well, antennas have been well understood by people (not me!) for many many years. I've got an ARRL Antenna handbook from the 1950s, and it's not really that different from the one I got from the 1990s. The writing is different, the pictures of cars with antennas mounted are very different (and entertaining), but the general concepts haven't changed much at all. In the old book, VHF and UHF are sort of an afterthought, which I guess makes sense. But the actual antenna concepts are pretty much the same, even though the books are like 40 years apart. (And to make it copyright related, well, my 1950's ARRL antenna book could have entered the public domain. It depends on if it's copyright was renewed or not.) -- Doug McLaren, , AD5RH Life is fraught with opportunities to keep your mouth shut. |
No, no leg pulling, toroids can be lossy (and, as we all know, more often
than not--loss = heat)... I find a 2-50 Mhz balun to be more of a "myth" than a reality... even if I wind it out of the "proper" core material to begin with.... (often it is just what I have on hand grin) I warned ya, my motto really is, "What ever works!!!".... I just failed to add... "...even if it is lossy!" Proper core material is important--never had one "crack" as I have heard about though... Warmest regards, John "Cecil Moore" wrote in message ... John Smith wrote: If I wind for 160m and try to run "real" power on 10 meters--yes Cecil they do-- I might not have even noticed my leg being pulled but I have a torn ACL that is a very sensitive detector. -- 73, Cecil http://www.qsl.net/w5dxp ----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups ----= East and West-Coast Server Farms - Total Privacy via Encryption =---- |
In article ,
John Smith wrote: | I NEVER want to copy whole books, I can't see a reason for copying | whole chapters, seldom would there be a need for whole | pages--usually short of a page would suffice--this would fall under | "fair use", if proper credit is give author/material You stated that most technical docs fall out of copyright quickly. I asked how you defined quickly, since technical docs don't fall out of copyright now any faster than anything else. (And they didn't before either, though it's possible that copyrights were not renewed more often for technical docs.) As for facts and ideas, neither are copyrightable. Books are. If you learn something from a book, the knowledge is yours, not covered by the copyright by the book. (It may be covered by a patent, or a small phrase you learn may be trademarked, but that's different.) | But, make no mistake, I am not here for "hero worship." However, if you | don't think I have gotten to here without having stood upon the shoulders of | others--you are mistaken--and I DO NOT make that mistake What are you talking about? Obviously, all of civilization is based on what our ancestors learned. If we were each starting out fresh every generation, we'd be just another animal, and even they pass knowledge down from generation to generation (like how to hunt, etc.) But none of this has anything to do with copyrights. I never said you had or had not violated any copyrights. Fair use is another issue that I did not touch. | I am not here to claim other mens knowledge as "original ideas" of my | own--rather my whole knowledge is composed of bits and pieces of | others--isn't yours? The majority of my knowledge is, perhaps. Not all of it. I suspect you've learned a few things on your own too. For example, to make this antenna related, I've learned, on my own, that if your SWR meter is pegging, and your transmitter is only putting out one watt of power (when it's capable of 100 watts) that one thing to check is that all your connectors are tight. I'm sure that somebody figured this out before me, but I did learn it on my own, as I was trying to figure out what the hell was wrong with my radio :) (I'm also lucky I didn't let out any magic smoke, but that's probably because somebody learned before me that if they don't make the transmitter back off when the SWR goes high, the magic smoke escapes and that's best avoided.) | At this point, it would be impossible to tell what bit or what piece | has come from who--or when... but I will do the best I can | here... someway we will find a way for this to work... I wasn't talking about bits of knowledge. I was talking about books, or parts of a book, or diagrams, schematics, etc. These are all covered by copyrights, though many have expired, and smaller parts of a larger work may be usable under fair use. As a society, there is some benefit to having things protected by copyright (and patents, but they're different), as it can help provide an incentive for people to create things. But I suspect that our current society has gone too far, with Disney buying extensions from Congress every few decades, just in time to keep Mickey Mouse from becoming public domain. I do believe that we've already found a way to make it work, but the beaurocrats are finding ways to keep it from working for everybody, and instead keep it working for them. -- Doug McLaren, internet, eh? I hear they have that on computers now. |
I would say over 50% of all technical books since 1950 are expired
copyright... But, the thread which dealt with copyright, here, contains enough info to be able to research any book you might choose... can be done in a matter of minutes... Easier to research any given book than argue it... and that was the point of that thread... I havent looked at John Kraus's(sp?) works.... the university may have picked up his copyrights... Warmest regards, John "Doug McLaren" wrote in message ... In article , John Smith wrote: | I NEVER want to copy whole books, I can't see a reason for copying | whole chapters, seldom would there be a need for whole | pages--usually short of a page would suffice--this would fall under | "fair use", if proper credit is give author/material You stated that most technical docs fall out of copyright quickly. I asked how you defined quickly, since technical docs don't fall out of copyright now any faster than anything else. (And they didn't before either, though it's possible that copyrights were not renewed more often for technical docs.) As for facts and ideas, neither are copyrightable. Books are. If you learn something from a book, the knowledge is yours, not covered by the copyright by the book. (It may be covered by a patent, or a small phrase you learn may be trademarked, but that's different.) | But, make no mistake, I am not here for "hero worship." However, if you | don't think I have gotten to here without having stood upon the shoulders of | others--you are mistaken--and I DO NOT make that mistake What are you talking about? Obviously, all of civilization is based on what our ancestors learned. If we were each starting out fresh every generation, we'd be just another animal, and even they pass knowledge down from generation to generation (like how to hunt, etc.) But none of this has anything to do with copyrights. I never said you had or had not violated any copyrights. Fair use is another issue that I did not touch. | I am not here to claim other mens knowledge as "original ideas" of my | own--rather my whole knowledge is composed of bits and pieces of | others--isn't yours? The majority of my knowledge is, perhaps. Not all of it. I suspect you've learned a few things on your own too. For example, to make this antenna related, I've learned, on my own, that if your SWR meter is pegging, and your transmitter is only putting out one watt of power (when it's capable of 100 watts) that one thing to check is that all your connectors are tight. I'm sure that somebody figured this out before me, but I did learn it on my own, as I was trying to figure out what the hell was wrong with my radio :) (I'm also lucky I didn't let out any magic smoke, but that's probably because somebody learned before me that if they don't make the transmitter back off when the SWR goes high, the magic smoke escapes and that's best avoided.) | At this point, it would be impossible to tell what bit or what piece | has come from who--or when... but I will do the best I can | here... someway we will find a way for this to work... I wasn't talking about bits of knowledge. I was talking about books, or parts of a book, or diagrams, schematics, etc. These are all covered by copyrights, though many have expired, and smaller parts of a larger work may be usable under fair use. As a society, there is some benefit to having things protected by copyright (and patents, but they're different), as it can help provide an incentive for people to create things. But I suspect that our current society has gone too far, with Disney buying extensions from Congress every few decades, just in time to keep Mickey Mouse from becoming public domain. I do believe that we've already found a way to make it work, but the beaurocrats are finding ways to keep it from working for everybody, and instead keep it working for them. -- Doug McLaren, internet, eh? I hear they have that on computers now. |
Well, enough of copyright... do as you see fit with your understanding... I
certainly will with mine... Warmest regards, John "Doug McLaren" wrote in message ... In article , John Smith wrote: | I NEVER want to copy whole books, I can't see a reason for copying | whole chapters, seldom would there be a need for whole | pages--usually short of a page would suffice--this would fall under | "fair use", if proper credit is give author/material You stated that most technical docs fall out of copyright quickly. I asked how you defined quickly, since technical docs don't fall out of copyright now any faster than anything else. (And they didn't before either, though it's possible that copyrights were not renewed more often for technical docs.) As for facts and ideas, neither are copyrightable. Books are. If you learn something from a book, the knowledge is yours, not covered by the copyright by the book. (It may be covered by a patent, or a small phrase you learn may be trademarked, but that's different.) | But, make no mistake, I am not here for "hero worship." However, if you | don't think I have gotten to here without having stood upon the shoulders of | others--you are mistaken--and I DO NOT make that mistake What are you talking about? Obviously, all of civilization is based on what our ancestors learned. If we were each starting out fresh every generation, we'd be just another animal, and even they pass knowledge down from generation to generation (like how to hunt, etc.) But none of this has anything to do with copyrights. I never said you had or had not violated any copyrights. Fair use is another issue that I did not touch. | I am not here to claim other mens knowledge as "original ideas" of my | own--rather my whole knowledge is composed of bits and pieces of | others--isn't yours? The majority of my knowledge is, perhaps. Not all of it. I suspect you've learned a few things on your own too. For example, to make this antenna related, I've learned, on my own, that if your SWR meter is pegging, and your transmitter is only putting out one watt of power (when it's capable of 100 watts) that one thing to check is that all your connectors are tight. I'm sure that somebody figured this out before me, but I did learn it on my own, as I was trying to figure out what the hell was wrong with my radio :) (I'm also lucky I didn't let out any magic smoke, but that's probably because somebody learned before me that if they don't make the transmitter back off when the SWR goes high, the magic smoke escapes and that's best avoided.) | At this point, it would be impossible to tell what bit or what piece | has come from who--or when... but I will do the best I can | here... someway we will find a way for this to work... I wasn't talking about bits of knowledge. I was talking about books, or parts of a book, or diagrams, schematics, etc. These are all covered by copyrights, though many have expired, and smaller parts of a larger work may be usable under fair use. As a society, there is some benefit to having things protected by copyright (and patents, but they're different), as it can help provide an incentive for people to create things. But I suspect that our current society has gone too far, with Disney buying extensions from Congress every few decades, just in time to keep Mickey Mouse from becoming public domain. I do believe that we've already found a way to make it work, but the beaurocrats are finding ways to keep it from working for everybody, and instead keep it working for them. -- Doug McLaren, internet, eh? I hear they have that on computers now. |
NOT "since 1950", rather "before 1950"... and everyone here seems to have
libraries full of decades old works--I have a few myself... Warmest regards, John "John Smith" wrote in message ... I would say over 50% of all technical books since 1950 are expired copyright... But, the thread which dealt with copyright, here, contains enough info to be able to research any book you might choose... can be done in a matter of minutes... Easier to research any given book than argue it... and that was the point of that thread... I havent looked at John Kraus's(sp?) works.... the university may have picked up his copyrights... Warmest regards, John "Doug McLaren" wrote in message ... In article , John Smith wrote: | I NEVER want to copy whole books, I can't see a reason for copying | whole chapters, seldom would there be a need for whole | pages--usually short of a page would suffice--this would fall under | "fair use", if proper credit is give author/material You stated that most technical docs fall out of copyright quickly. I asked how you defined quickly, since technical docs don't fall out of copyright now any faster than anything else. (And they didn't before either, though it's possible that copyrights were not renewed more often for technical docs.) As for facts and ideas, neither are copyrightable. Books are. If you learn something from a book, the knowledge is yours, not covered by the copyright by the book. (It may be covered by a patent, or a small phrase you learn may be trademarked, but that's different.) | But, make no mistake, I am not here for "hero worship." However, if you | don't think I have gotten to here without having stood upon the shoulders of | others--you are mistaken--and I DO NOT make that mistake What are you talking about? Obviously, all of civilization is based on what our ancestors learned. If we were each starting out fresh every generation, we'd be just another animal, and even they pass knowledge down from generation to generation (like how to hunt, etc.) But none of this has anything to do with copyrights. I never said you had or had not violated any copyrights. Fair use is another issue that I did not touch. | I am not here to claim other mens knowledge as "original ideas" of my | own--rather my whole knowledge is composed of bits and pieces of | others--isn't yours? The majority of my knowledge is, perhaps. Not all of it. I suspect you've learned a few things on your own too. For example, to make this antenna related, I've learned, on my own, that if your SWR meter is pegging, and your transmitter is only putting out one watt of power (when it's capable of 100 watts) that one thing to check is that all your connectors are tight. I'm sure that somebody figured this out before me, but I did learn it on my own, as I was trying to figure out what the hell was wrong with my radio :) (I'm also lucky I didn't let out any magic smoke, but that's probably because somebody learned before me that if they don't make the transmitter back off when the SWR goes high, the magic smoke escapes and that's best avoided.) | At this point, it would be impossible to tell what bit or what piece | has come from who--or when... but I will do the best I can | here... someway we will find a way for this to work... I wasn't talking about bits of knowledge. I was talking about books, or parts of a book, or diagrams, schematics, etc. These are all covered by copyrights, though many have expired, and smaller parts of a larger work may be usable under fair use. As a society, there is some benefit to having things protected by copyright (and patents, but they're different), as it can help provide an incentive for people to create things. But I suspect that our current society has gone too far, with Disney buying extensions from Congress every few decades, just in time to keep Mickey Mouse from becoming public domain. I do believe that we've already found a way to make it work, but the beaurocrats are finding ways to keep it from working for everybody, and instead keep it working for them. -- Doug McLaren, internet, eh? I hear they have that on computers now. |
.... just realized...
I got this post mixed up with an email converstation I was engaged in at the same time... sorry about the reference to "John Kraus"... that was part of another conversation... Warmest regards, John "John Smith" wrote in message ... I would say over 50% of all technical books since 1950 are expired copyright... But, the thread which dealt with copyright, here, contains enough info to be able to research any book you might choose... can be done in a matter of minutes... Easier to research any given book than argue it... and that was the point of that thread... I havent looked at John Kraus's(sp?) works.... the university may have picked up his copyrights... Warmest regards, John "Doug McLaren" wrote in message ... In article , John Smith wrote: | I NEVER want to copy whole books, I can't see a reason for copying | whole chapters, seldom would there be a need for whole | pages--usually short of a page would suffice--this would fall under | "fair use", if proper credit is give author/material You stated that most technical docs fall out of copyright quickly. I asked how you defined quickly, since technical docs don't fall out of copyright now any faster than anything else. (And they didn't before either, though it's possible that copyrights were not renewed more often for technical docs.) As for facts and ideas, neither are copyrightable. Books are. If you learn something from a book, the knowledge is yours, not covered by the copyright by the book. (It may be covered by a patent, or a small phrase you learn may be trademarked, but that's different.) | But, make no mistake, I am not here for "hero worship." However, if you | don't think I have gotten to here without having stood upon the shoulders of | others--you are mistaken--and I DO NOT make that mistake What are you talking about? Obviously, all of civilization is based on what our ancestors learned. If we were each starting out fresh every generation, we'd be just another animal, and even they pass knowledge down from generation to generation (like how to hunt, etc.) But none of this has anything to do with copyrights. I never said you had or had not violated any copyrights. Fair use is another issue that I did not touch. | I am not here to claim other mens knowledge as "original ideas" of my | own--rather my whole knowledge is composed of bits and pieces of | others--isn't yours? The majority of my knowledge is, perhaps. Not all of it. I suspect you've learned a few things on your own too. For example, to make this antenna related, I've learned, on my own, that if your SWR meter is pegging, and your transmitter is only putting out one watt of power (when it's capable of 100 watts) that one thing to check is that all your connectors are tight. I'm sure that somebody figured this out before me, but I did learn it on my own, as I was trying to figure out what the hell was wrong with my radio :) (I'm also lucky I didn't let out any magic smoke, but that's probably because somebody learned before me that if they don't make the transmitter back off when the SWR goes high, the magic smoke escapes and that's best avoided.) | At this point, it would be impossible to tell what bit or what piece | has come from who--or when... but I will do the best I can | here... someway we will find a way for this to work... I wasn't talking about bits of knowledge. I was talking about books, or parts of a book, or diagrams, schematics, etc. These are all covered by copyrights, though many have expired, and smaller parts of a larger work may be usable under fair use. As a society, there is some benefit to having things protected by copyright (and patents, but they're different), as it can help provide an incentive for people to create things. But I suspect that our current society has gone too far, with Disney buying extensions from Congress every few decades, just in time to keep Mickey Mouse from becoming public domain. I do believe that we've already found a way to make it work, but the beaurocrats are finding ways to keep it from working for everybody, and instead keep it working for them. -- Doug McLaren, internet, eh? I hear they have that on computers now. |
John Smith wrote:
No, no leg pulling, toroids can be lossy (and, as we all know, more often than not--loss = heat)... I find a 2-50 Mhz balun to be more of a "myth" than a reality... Me too - that's why I knew you were pulling my leg. :-) -- 73, Cecil, http://www.qsl.net/w5dxp ----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups ----= East and West-Coast Server Farms - Total Privacy via Encryption =---- |
I have a quality linear, custom made, it does cover 2-50 Mhz, to couple the
mosfets to the antenna it uses the ferrite bead/pc board/tubing output xfrmr--I have often wondered if that xfrmr design could be used... but never did any expermenting... other than dropping the beads over coax shielding... Warmest regards, John "Cecil Moore" wrote in message ... John Smith wrote: No, no leg pulling, toroids can be lossy (and, as we all know, more often than not--loss = heat)... I find a 2-50 Mhz balun to be more of a "myth" than a reality... Me too - that's why I knew you were pulling my leg. :-) -- 73, Cecil, http://www.qsl.net/w5dxp ----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups ----= East and West-Coast Server Farms - Total Privacy via Encryption =---- |
Here is a guy with an interesting balun design--and provides EXCELLENT
construction details, two cores are needed--however, you end up with 1:1 - 1:2 and 1:4 ratios, all in one balun... interesting design... I think it is inspired by Dr. sevicks' work... http://www.qsl.net/wb6zqz/3in1balun/construct.html Warmest regards, John "Jayson Davis" wrote in message ... I'd like to make a 1:1 balun, similar to what you'd buy from Van Gorden Engineering. Anyone know of online designs/prints/instructions? Thanks |
John Smith wrote:
Here is a guy with an interesting balun design--and provides EXCELLENT construction details, two cores are needed--however, you end up with 1:1 - 1:2 and 1:4 ratios, all in one balun... interesting design... I think it is inspired by Dr. sevicks' work... http://www.qsl.net/wb6zqz/3in1balun/construct.html Wow, great photography. I think this device is more properly labeled a "Multimatch Unun", Chapter 9, "Building and Using Baluns and Ununs", by Jerry Sevick, W2FMI. -- 73, Cecil http://www.qsl.net/w5dxp ----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 100,000 Newsgroups ---= East/West-Coast Server Farms - Total Privacy via Encryption =--- |
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