@tubesclan Hello Claudio, I'm not sure what you mean by 'Scheme'. The circuit is printed and explained on another posting on my pages. Please let me know if you have any specific questions about it. J.
Very nice project, good thing you found it after all these years! I love old tube technology, it is so much more interesting than solid state and sounds much better too. I built a 300b stereo amp a couple of years back and the sound is brilliant, much better tan any transistor amp I have ever heard.
@ccronn Hello! The amplifier was a kit I built in the 1960's ECC83 preamp/ driver, EL84 output, EZ80 rectifier. Nothing special but like all valve amplifiers, sounds great. The output is 5 watts RMS so adequate to fill a large room. The valve line up is conventional but much older amplifiers using valves such as the 6SN7, 6V6G and 5Z4 will give identical performance. Circuits and valves from the 1930's will give similar results. A lot of hype exists around valves and amplifiers. Mostly rubbish!
Fascinating - I love construction products with valves. I was brought up with transistors and would love to put a valve audio amplifier together after hearing on - they sound so much better than MOSFETs.
I think your project is brilliant! Thanks to youTUBE for suggesting I watch this.
What a beauty. I'd love to see the schematic too, and have a go at putting one together. Great to see old valve equipment still in action. Thanks for posting the video.
@gushhnet Yes! Did it a few weeks ago and will post as soon as I work out how to post 'stills' on Utube! It's a simple circuit and should be very easy to make if you have a limited knowledge of assembly. J.
@vinylseat That's nice to hear :) I don't know if you can post stills but you could maybe add a link to your website where the files could be hosted and you can just show the schematic on a video. I wish youtube had "attachments" or "learning material" if you know what I mean! -- Certain categories should include a virtual folder where the editor of the video could upload a few files in context of the video...
@robot797 Very sorry about this delay! I traced the circuit weeks back and I promise I will incorporate it into a short video over the Christmas period. I don't think you can post pictures as such on Utube so I will set the camera up on the enlarged circuit and go through the details. It's very simple and should not cause any difficulties in construction. Again, sorry for the delay. regards, J.
I like your video very much, since it is a nice kind of "time travel", it also shows " What once was good, still can be good".
Also the "big" tube amp. is nice with original design.
What you received was all AM right?
Do you know if that what you did with the left turning knob is what we call in german "Rückkopplung" that should be something like "back coupling" in english?
@vinylseat so where did you post the schematics,not that I cant find it on the net also but just curious cause this is what we had to build or draw out to get our ham op licence back in the 60s
@pmonkeyrock Sorry I have not posted the circuit before! I have traced it out this evening and will post as soon as I have a few moments free. Thanks for your interest and I will post it very soon. Sorry for the delay. J.
@pmonkeyrock I'm sorry I have not posted this simple circuit. I traced it out this evening and as soon as I've tided up the sheet I will scan and post it very soon. Thanks for the interest. J.
I just simply love that radio. It seems you have got very close stations so I would add a vernier drive in order not to miss any signal. Your demostration is superb ! Congratulations for that little wonder and the amp too. 73, Carlos from Argentina
Thank you for your kind comments Carlos. The good results are due to the brilliant REPANCO DRR2 coil wound with Litz wire. You could wind a coil yourself, very easy but the results are not quite so good but still acceptable. Great fun! J.
Listen to that thing go! What a strong sounding radio and amplifier, you really can't go wrong with tubes.
I have a two tube regenerative set that tunes BCB and a bit of the shortwave band and with a 75 foot random wire up about 30ft it's managed to pull in Egypt on 49m.
Even at my age of 21 I'm addicted to radios,I'm done for! =)
Thanks. Note that I have fed the single valve headphone receiver into a valve amplifier to better demonstrate the set on UrTube. The quality is good and loud in the phones when used as a single valve receiver. Cheers, J.
All that is needed to receive A.M. signals is a tuning coil, some form of detector diode/signal rectifier made from such materials as galena [one of the oldest] Germanium, and silicon to mention a few, in fact any metal composition that will only pass current one way thus acting as a signal rectifier [metal oxides]. The tiny signal you hear in the phones is actually the power from the transmitter without amplification. A good aerial and earth are needed. Valves amplify this signal. J.
I really like this radio and also the amplifier in the back. I want to build something very much like your amplifier with radio, speaker, etc. running off 115V AC but I just don't know how to start. They don't teach this, anymore! :) It would be great. All the tubes out in the front, glowing for the world to see.
Thanks for your comment. The radio itself is a very simple circuit and even the tuning coil can very easily be wound by hand at home. You can use it with high resistance telephones or modern types with a matching transformer. Once you have got this working a simple two stage amplifier will give you loudspeaker results. You need to get some radio constructors books from the 50's to learn valve [tube] technique. The other odd bits can be obtained very cheaply from electronic junk shops. John.
Yes Rocky it is a regenerative circuit. It picks up a wide range of stations even in daylight with good selectivity. The coil is a very well made unit by REPANCO. It sold for around 2/6d [13 p!] in 1960. Pocket money had to be saved but the rest of the components could be salvaged from scrap sets. The anode voltage works best at around 24v a very low value. The young today will never experience the delight of receiving signals on a set they constructed themselves. thanks for your comment. J.
Hello Raymond.Its a very simple A.M. circuit that dates back to the 20's.
F.M. dates from the late 30's and in the U.K.the 50's. This construction covers the 'broadcast' band and Long wave.
Around 50mw provides good volume with high resistance headphones.I connected the output to a simple valve amplifier to demonstrate via a loudspeaker the stations recievable on such a simple receiver.Hope this clears up any queries. Please feel free to comment further if you wish. Regards, J.
beautiful. love it. Really nice audio from such valves
dh1ao 2 months ago
Where can I find the circuit diagram?
LZ2SM 6 months ago
very nice . i miss those old radios
sweetgyy 9 months ago
Nice video, great little radio and gorgeous amp!!
vamtim 9 months ago
hello
I would be interested to rebuild the beautiful circuit shown in this video. Would it be possible to have the scheme? thanks hello Claudio
tubesclan 9 months ago
@tubesclan Hello Claudio, I'm not sure what you mean by 'Scheme'. The circuit is printed and explained on another posting on my pages. Please let me know if you have any specific questions about it. J.
vinylseat 9 months ago
@vinylseat
Ciao J.
thank you very much
I have now seen the wiring diagram of your beautiful radio
thanks again and congratulations
Claudio
tubesclan 9 months ago
Very nice project, good thing you found it after all these years! I love old tube technology, it is so much more interesting than solid state and sounds much better too. I built a 300b stereo amp a couple of years back and the sound is brilliant, much better tan any transistor amp I have ever heard.
protelboy 1 year ago
I am really loving that amplifier you are using! Is it a mono amp?
ccronn 1 year ago
@ccronn Hello! The amplifier was a kit I built in the 1960's ECC83 preamp/ driver, EL84 output, EZ80 rectifier. Nothing special but like all valve amplifiers, sounds great. The output is 5 watts RMS so adequate to fill a large room. The valve line up is conventional but much older amplifiers using valves such as the 6SN7, 6V6G and 5Z4 will give identical performance. Circuits and valves from the 1930's will give similar results. A lot of hype exists around valves and amplifiers. Mostly rubbish!
vinylseat 1 year ago
Fascinating - I love construction products with valves. I was brought up with transistors and would love to put a valve audio amplifier together after hearing on - they sound so much better than MOSFETs.
I think your project is brilliant! Thanks to youTUBE for suggesting I watch this.
urbex2007 1 year ago
It's Good Selectvity
nagoya6toto 1 year ago
What a beauty. I'd love to see the schematic too, and have a go at putting one together. Great to see old valve equipment still in action. Thanks for posting the video.
Smith8340 1 year ago
See this ===> youtube.com/watch?v=YHfoON7ukSc
pegasomarcelo 1 year ago
Ever got around tracing the circuit?, I think everyone wants to take a look at the schematic!
gushhnet 1 year ago
@gushhnet Yes! Did it a few weeks ago and will post as soon as I work out how to post 'stills' on Utube! It's a simple circuit and should be very easy to make if you have a limited knowledge of assembly. J.
vinylseat 1 year ago
@vinylseat That's nice to hear :) I don't know if you can post stills but you could maybe add a link to your website where the files could be hosted and you can just show the schematic on a video. I wish youtube had "attachments" or "learning material" if you know what I mean! -- Certain categories should include a virtual folder where the editor of the video could upload a few files in context of the video...
gushhnet 1 year ago
@vinylseat were is it then?
robot797 1 year ago
@robot797 Very sorry about this delay! I traced the circuit weeks back and I promise I will incorporate it into a short video over the Christmas period. I don't think you can post pictures as such on Utube so I will set the camera up on the enlarged circuit and go through the details. It's very simple and should not cause any difficulties in construction. Again, sorry for the delay. regards, J.
vinylseat 1 year ago
I like your video very much, since it is a nice kind of "time travel", it also shows " What once was good, still can be good".
Also the "big" tube amp. is nice with original design.
What you received was all AM right?
Do you know if that what you did with the left turning knob is what we call in german "Rückkopplung" that should be something like "back coupling" in english?
XELA2T 1 year ago
I just LOVE that little tube amplifier you have there. Can you give me a bit of info on it?
FelixTheHouseFreak 1 year ago
schematic???
tiputipu0052 1 year ago
If it's not too much trouble, I would also like to see the schematic for this little gem!
Dave
dbell95008 2 years ago
O.K. No problem. I will post this very soon. Its a VERY simple circuit and if you can't get the Repanco coil [DRR2] you can wind one yourself. J.
vinylseat 2 years ago
@vinylseat so where did you post the schematics,not that I cant find it on the net also but just curious cause this is what we had to build or draw out to get our ham op licence back in the 60s
w9x7cv3vg6 1 year ago
No problem. I'm not sure how to upload stills on UTube but I have a couple of very simple circuits that will guarantee results. J.
vinylseat 2 years ago
Do you have the circuit for this? I really want to build my first valve radio and this seems a great Place to start
pmonkeyrock 2 years ago
@pmonkeyrock Sorry I have not posted the circuit before! I have traced it out this evening and will post as soon as I have a few moments free. Thanks for your interest and I will post it very soon. Sorry for the delay. J.
vinylseat 1 year ago
@pmonkeyrock I'm sorry I have not posted this simple circuit. I traced it out this evening and as soon as I've tided up the sheet I will scan and post it very soon. Thanks for the interest. J.
vinylseat 1 year ago
I just simply love that radio. It seems you have got very close stations so I would add a vernier drive in order not to miss any signal. Your demostration is superb ! Congratulations for that little wonder and the amp too. 73, Carlos from Argentina
CAR73LOS 2 years ago
Thank you for your kind comments Carlos. The good results are due to the brilliant REPANCO DRR2 coil wound with Litz wire. You could wind a coil yourself, very easy but the results are not quite so good but still acceptable. Great fun! J.
vinylseat 2 years ago
Thanks Les. As soon as I work out how to upload pictures I will post the circuit. Its very simple with just a very few basic components. J.
vinylseat 2 years ago
Yes I'm afraid you are done for! I was at the age of 11 and i'm still suffering at 61!
Simple short wave sets are great fun and its surprising what can be picked up on them. J.
vinylseat 2 years ago
Listen to that thing go! What a strong sounding radio and amplifier, you really can't go wrong with tubes.
I have a two tube regenerative set that tunes BCB and a bit of the shortwave band and with a 75 foot random wire up about 30ft it's managed to pull in Egypt on 49m.
Even at my age of 21 I'm addicted to radios,I'm done for! =)
Great video and great equipment. - Mike
928GTSR 2 years ago
Thanks. Note that I have fed the single valve headphone receiver into a valve amplifier to better demonstrate the set on UrTube. The quality is good and loud in the phones when used as a single valve receiver. Cheers, J.
vinylseat 2 years ago
impressive sound!
preludefan 2 years ago
Ha ha! I like your comment! My service dept would be a total time warp to a
1950's television engineer. Its a step back in time, say 50 years. J.
vinylseat 2 years ago
I see the Brimar valve book beside the chassis, remember that well from my childhood...
be careful about promoting a career in radio, I will never ever be rich!
g0fvt 2 years ago
I have heard about single tube radios for decades but have never seen one work until now.
I almost assumed that they were BSEE legends, not working products. How reception was possible on lumps of coal with cat whiskers is beyond me...
To be blunt, one expects a radio to have 3 tubes as a bare minimum -- a mix of a triode, pentode and a diode.
Since 1970 the complex specialty tubes that evolved from 1925-1955 have ceased to be supported so units like this are even more exotic.
eyreland 2 years ago
All that is needed to receive A.M. signals is a tuning coil, some form of detector diode/signal rectifier made from such materials as galena [one of the oldest] Germanium, and silicon to mention a few, in fact any metal composition that will only pass current one way thus acting as a signal rectifier [metal oxides]. The tiny signal you hear in the phones is actually the power from the transmitter without amplification. A good aerial and earth are needed. Valves amplify this signal. J.
vinylseat 2 years ago
Good work. I like it and I see.
Congratulations !
I am 56 years old, I interest in old Radios.
It's my hobby. I did some 1-tube radio in 1962 too :-)
Look my radios in "zenonasl" in youtube.
Kind Regards, Zenonas, Lithuania
zenonasl 2 years ago
Thanks for your comment. Its great to know there is interest in simple radio's such a long way from Great Britain. John.
vinylseat 2 years ago
I really like this radio and also the amplifier in the back. I want to build something very much like your amplifier with radio, speaker, etc. running off 115V AC but I just don't know how to start. They don't teach this, anymore! :) It would be great. All the tubes out in the front, glowing for the world to see.
Wufnu 3 years ago
Thanks for your comment. The radio itself is a very simple circuit and even the tuning coil can very easily be wound by hand at home. You can use it with high resistance telephones or modern types with a matching transformer. Once you have got this working a simple two stage amplifier will give you loudspeaker results. You need to get some radio constructors books from the 50's to learn valve [tube] technique. The other odd bits can be obtained very cheaply from electronic junk shops. John.
vinylseat 3 years ago
Yes Rocky it is a regenerative circuit. It picks up a wide range of stations even in daylight with good selectivity. The coil is a very well made unit by REPANCO. It sold for around 2/6d [13 p!] in 1960. Pocket money had to be saved but the rest of the components could be salvaged from scrap sets. The anode voltage works best at around 24v a very low value. The young today will never experience the delight of receiving signals on a set they constructed themselves. thanks for your comment. J.
vinylseat 3 years ago
I like this radio, so it is a regenerative set, and the detector is a grid leak is it?
and i imagain at night you can receive a good many distant radio stations.
well done, it is a good project.
rockymountainradio 3 years ago
Hello Raymond.Its a very simple A.M. circuit that dates back to the 20's.
F.M. dates from the late 30's and in the U.K.the 50's. This construction covers the 'broadcast' band and Long wave.
Around 50mw provides good volume with high resistance headphones.I connected the output to a simple valve amplifier to demonstrate via a loudspeaker the stations recievable on such a simple receiver.Hope this clears up any queries. Please feel free to comment further if you wish. Regards, J.
vinylseat 3 years ago
is it AM or FM? How many watts?
raymondleeleggs 3 years ago