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#1
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Hello...
Back in 1973, when I was in the process of getting my Novice license, I built a simple tube receiver from a construction article that came from a Boy Scout Merit Badge pamphlet on 'Radio'. The radio didn't work well because I was young (16) and really didn't know what I was doing. Recently, I have had a desire to rebuild that radio for sentimental reasons and am trying to find that schematic. The problem is, I cannot remember the name of the article. My belief is that the article was originally published in QST around 1965 and was granted reprint permission in the 'Radio' Boy Scout merit badge booklet. Does anyone have any recollection of which reciever that I am referring to. What I remember was that there were 5 tubes (I think) and used plug in coils for changing bands. It also was a supre-regen type receiver. If anyone could help me with optaining the schematic for this, It would be most appreciated. Thanks and a very happy new year... Jim WB5KYE |
#2
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Hi, Jim
I thought I might have found what you were looking for. But, then I did more digging and the situation seems muddier. The 1968 ARRL Handbook has a project called "The Junior 'Miser's Dream'". However, it is a 5-tube superhet receiver. It was based on a May 1965 QST article subtitled "A Description of the 'Miser's Dream'". This receiver is also bandswitched, rather than using plug-in coils. The Handbook project is described as using some of the principles of the QST article, but with some simplifications and reduced cost. Most of the information I have seen on regens and super regens use one to four tubes, depending on whether they use an RF amp stage, solid state rectifier and dual-function tubes, and whether or not a speaker was driven. The 1956-1959 KnightKit Space Spanner, for example, used a 35W4, 50C5, and a 12AT7; but, the 12AT7 is a dual-triode, so that's actually 'four' tubes and a diode. I don't recall what the famous Ocean Hopper had for a tube complement, even though my Elmer broke me in by letting me borrow his for awhile back in the day. An old RCA tube manual I have shows plans for a four tube regen. See http://www.mines.uidaho.edu/~glowbugs/12at7_regen.html for a one tube, plug-in coils, regen. Also, look at http://www.hvinet.com/rjmattson/56noviceRcvr for a nice regen based on a 1956 QST article. This site is a treasure trove of info on old ham radios: http://oak.cats.ohiou.edu/~postr/bapix Earlier tonight (yesterday evening, rather!) I ran across AA7JC's site at http://www.lotts.net/ken/ham/. He built a neat little regen, and he has several mp3 files you can listen to of QSOs. Amazing clarity! Well, I hope you find what you were looking for, and if you do, I'd be interested as well. You can email direct, just leave out the **'s in the address. 73, Ted KX4OM On Sat, 01 Jan 2005 16:31:23 GMT, Jim Flanagan wrote: Hello... Back in 1973, when I was in the process of getting my Novice license, I built a simple tube receiver from a construction article that came from a Boy Scout Merit Badge pamphlet on 'Radio'. The radio didn't work well because I was young (16) and really didn't know what I was doing. Recently, I have had a desire to rebuild that radio for sentimental reasons and am trying to find that schematic. The problem is, I cannot remember the name of the article. My belief is that the article was originally published in QST around 1965 and was granted reprint permission in the 'Radio' Boy Scout merit badge booklet. Does anyone have any recollection of which reciever that I am referring to. What I remember was that there were 5 tubes (I think) and used plug in coils for changing bands. It also was a supre-regen type receiver. If anyone could help me with optaining the schematic for this, It would be most appreciated. Thanks and a very happy new year... Jim WB5KYE |
#3
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Hi, Jim
I thought I might have found what you were looking for. But, then I did more digging and the situation seems muddier. The 1968 ARRL Handbook has a project called "The Junior 'Miser's Dream'". However, it is a 5-tube superhet receiver. It was based on a May 1965 QST article subtitled "A Description of the 'Miser's Dream'". This receiver is also bandswitched, rather than using plug-in coils. The Handbook project is described as using some of the principles of the QST article, but with some simplifications and reduced cost. Most of the information I have seen on regens and super regens use one to four tubes, depending on whether they use an RF amp stage, solid state rectifier and dual-function tubes, and whether or not a speaker was driven. The 1956-1959 KnightKit Space Spanner, for example, used a 35W4, 50C5, and a 12AT7; but, the 12AT7 is a dual-triode, so that's actually 'four' tubes and a diode. I don't recall what the famous Ocean Hopper had for a tube complement, even though my Elmer broke me in by letting me borrow his for awhile back in the day. An old RCA tube manual I have shows plans for a four tube regen. See http://www.mines.uidaho.edu/~glowbugs/12at7_regen.html for a one tube, plug-in coils, regen. Also, look at http://www.hvinet.com/rjmattson/56noviceRcvr for a nice regen based on a 1956 QST article. This site is a treasure trove of info on old ham radios: http://oak.cats.ohiou.edu/~postr/bapix Earlier tonight (yesterday evening, rather!) I ran across AA7JC's site at http://www.lotts.net/ken/ham/. He built a neat little regen, and he has several mp3 files you can listen to of QSOs. Amazing clarity! Well, I hope you find what you were looking for, and if you do, I'd be interested as well. You can email direct, just leave out the **'s in the address. 73, Ted KX4OM On Sat, 01 Jan 2005 16:31:23 GMT, Jim Flanagan wrote: Hello... Back in 1973, when I was in the process of getting my Novice license, I built a simple tube receiver from a construction article that came from a Boy Scout Merit Badge pamphlet on 'Radio'. The radio didn't work well because I was young (16) and really didn't know what I was doing. Recently, I have had a desire to rebuild that radio for sentimental reasons and am trying to find that schematic. The problem is, I cannot remember the name of the article. My belief is that the article was originally published in QST around 1965 and was granted reprint permission in the 'Radio' Boy Scout merit badge booklet. Does anyone have any recollection of which reciever that I am referring to. What I remember was that there were 5 tubes (I think) and used plug in coils for changing bands. It also was a supre-regen type receiver. If anyone could help me with optaining the schematic for this, It would be most appreciated. Thanks and a very happy new year... Jim WB5KYE |
#4
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![]() Jim Flanagan ) writes: Hello... Back in 1973, when I was in the process of getting my Novice license, I built a simple tube receiver from a construction article that came from a Boy Scout Merit Badge pamphlet on 'Radio'. The radio didn't work well because I was young (16) and really didn't know what I was doing. Recently, I have had a desire to rebuild that radio for sentimental reasons and am trying to find that schematic. The problem is, I cannot remember the name of the article. My belief is that the article was originally published in QST around 1965 and was granted reprint permission in the 'Radio' Boy Scout merit badge booklet. Does anyone have any recollection of which reciever that I am referring to. What I remember was that there were 5 tubes (I think) and used plug in coils for changing bands. It also was a supre-regen type receiver. If anyone could help me with optaining the schematic for this, It would be most appreciated. Thanks and a very happy new year... Jim WB5KYE People ask questions like this all the time, but they forget that most construction articles, especially of simple equipment, were pretty generic. The only difference between that regen over there and this regen over here would be because someone used what they had on hand, and it was time to run another regen article. So the coil forms might be a different size or form, causing the winding information to be different, and they'd use a different triode (because that's what they had), and the layout would be different because they had a cake tin instead of a piece of wood to build it on, but the basic circuit would be the same. Unless one can recall something specific about it, there really isn't any way of tracking down the specific one, though every time there are posts like this people recall the thing they remember that was similar. In other words, the specific article won't really matter because they are generic. Unless that receiver tuned VHF, then it's not a super-regen, but merely a regen receiver; people often do confuse the two, or forget the difference. It may be easiest to track down Boy Scout websites or archives to find the specific pamphlet, because unless someone can definitely remember seeing the pamphlet and the original article, it will only be a guess. And I suspect there is bound to be some collector, not likely here, who does have the pamphlet. People collect all kinds of things. My guess about the regen is that it's likely to be whatever was included in the ARRL's "How to Become a Radio Amateur" from that era. I gave my one and only copy away decades ago, but I gather they always had some sort of regen in each edition, though I recall by the time I got a copy in 1971, it was a transistorized version. But from the mid-sixties it would be a tube-based receiver, and it makes sense that they'd use that receiver in a Boy Scout pamphlet. Michael VE2BVW |
#6
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Might as well post the scans:
www.icehouse.net/wirenut/tuberecs.htm Those files will be deleted from my server in 48 hrs or less. Get them while you can. |
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