As a kid in the 50's, I adapted the "Man From Mars" vacuum tube "hat radio" circuit to fit in a small plywood box and mounted an earphone "speaker" with a small whip antenna, to make a "walkie talkie radio". Fairly selective and good volume for local stations.
Mike, for the last two years I have being having fun with crystal radios. I finally got around building a loading coil, after watching your video (watched several times), it greatly improve the selection of the radios i built. Thanks for all the knowledge you share..
I built a quarter watt guitar amp using battery tubes like that. I slapped together a prototype around 8 years ago but rewatching this video recently motivated me to revisit the idea and make a better one.
Very good like all your videos.... keep them coming.... love crystal radio ever since my dad help me build the Remco Crystal radio when I was about seven years old and he was explaining to me how he had A radio similar to that when he was young to listen to ..... I will never forget that moment with my dad.... he was the best... ran the antenna up on the roof and connected the ground to the radiator copper pipe in the bedroom and got got radio stations. I was so amazed by it and still am at 71 years old and think of my dad....God Bless him.....Mike
Thank you so much. I was given a Crystal set 60 years ago and had so much fun tuning into Radio Luxembourg 208 am in Europe, listening to Elvis and the Beatles etc at the time. Pure magic. Call it nostalgia if you like. Wonderful memories. I`ve been collecting old crystal sets but now want to build my own sets and hopefully encourage my grand children too. So keep up your Great work. Really appreciate all your hard work.
@Entity Vox hi Vox... haha, I hear ya there. I turned 40 not long ago and I am finding myself soldering tubes to PCBs and learning how to create radio and amplifier circuits for basically the first time! Got to love it!
Same scenario here. Never too late to explore, experiment, and learn about physics and technology. Radio is great fun and challenging. No chance to meet Mike or watch his videos when we were kids. I didn't know crystal sets could me sup'd up. I'm pretty sure I would have been into that. I built my crystal radio in my 200 in 1. Attached it to the TV antenna on the roof. Selectivity was poor. I thought.... When grandma was little she said they had a crystal set. Cat's whisker detector and all.... And there was only one station. Today there are many so I hear many. No knowledge about loading coils and wavetraps. Happy New Year!
Howdy. Nice. The antenna loading coil is awesome. Together with the antenna capacitance they form a series resonant circuit having the strongest current at the detector. In my mind this means the antenna virtual capture lenght is greatly increased. I am bewildered that no hobby book or magazine I have seen in my location (Finland, Europe) speaks about the benefit of the loading coil although evident and easy to understand. My gratitude for the education. In high regards.
I found the section on the antenna loading coil to be the most important. I have a crystal set that I built perhaps 10 years ago with many taps on the coil and a good variable capacitor. My antenna is an inverted L of about 85 feet length, but I had been connecting the antenna and ground across the entire coil. I will be adding a lower impedance primary and a variable antenna loading coil because you have demonstrated very well just how much difference those can make. (I will check out you loose coupler video before I build anything.) To me, the vacuum tube amp in this video was a totally different topic which I just skipped. Still, I found both this and your first crystal set video very informative. You do a good job of explaining how even a beginner can build one of these things. Given the cost of some of the components, there might be a good topic in showing how to scrounge parts from old radios. I recently read a suggestion that one place to find old radios (such as old clock radios) is at Goodwill stores.
The reason people see your videos is because you do not use added power like batteries we all know that tubes require added power or energy batteries your videos have mainly been how to improve crystal radios without added power am i right? And so thats why your videos are so liked.
Well some folks are purists who want the radio station signal alone to supply the power. Some want to be more clever stealing power in other ways like from another radio station that is stronger and let that power a separate stage or two. And then some just add stages and a battery!
What size magnetic wire are you using for the windings on.the tube ,I no I don't want to thin of a wire,for that ,If anyone no ,s maybe 22gauge or 20 guage,If a lot of stuff I been collecting to do builds so I have options ,I even ordered antique diodes the standard In34 ,military grade diodes,
Unfortunately most of the A.M. bands in Southern California are spanish speaking. I dont speak Spanish . In the 70's there were two very strong stations in my neighborhood, one was KSOM clasic radio which was a few miles away, I cant renember the second one.
Another question @11:46 I'm confused as to what the three screws (i'll call them 1, 2, and 3 from the top of the image) 1. From antenna, is this connected to the end of the coil?. 2. ? 3. Beginning of coil?
![[Part 4] หนุ่มน้อยรักคุณย่ายิ่งกว่าใคร ไม่ว่าใครก็รังแกดูถูกท่านไม่ได้!! #โลกการละคร](http://i.ytimg.com/vi/sLsBxw99FR0/mqdefault.jpg)
As a kid in the 50's, I adapted the "Man From Mars" vacuum tube "hat radio" circuit to fit in a small plywood box and mounted an earphone "speaker" with a small whip antenna, to make a "walkie talkie radio". Fairly selective and good volume for local stations.
What publication had such a cool circuit for a kid to copy?
@@MIKROWAVE1 I think it was "Radio Electronics" , Hugo Gernsback editor
Mike, for the last two years I have being having fun with crystal radios. I finally got around building a loading coil, after watching your video (watched several times), it greatly improve the selection of the radios i built. Thanks for all the knowledge you share..
I built a quarter watt guitar amp using battery tubes like that. I slapped together a prototype around 8 years ago but rewatching this video recently motivated me to revisit the idea and make a better one.
Very good like all your videos.... keep them coming.... love crystal radio ever since my dad help me build the Remco Crystal radio when I was about seven years old and he was explaining to me how he had A radio similar to that when he was young to listen to ..... I will never forget that moment with my dad.... he was the best... ran the antenna up on the roof and connected the ground to the radiator copper pipe in the bedroom and got got radio stations. I was so amazed by it and still am at 71 years old and think of my dad....God Bless him.....Mike
Thank you so much. I was given a Crystal set 60 years ago and had so much fun tuning into Radio Luxembourg 208 am in Europe, listening to Elvis and the Beatles etc at the time. Pure magic. Call it nostalgia if you like. Wonderful memories. I`ve been collecting old crystal sets but now want to build my own sets and hopefully encourage my grand children too. So keep up your Great work. Really appreciate all your hard work.
Yes,Radio Luxemburg,Europawelle Saar,Deutschlandfunk Hitparade,Deutscher Soldatensender ⚡⚡⚡🙀😂😂😂🎹🍬🍬🍬🐒👍💕👲🇩🇪
Thanks for uploading, just got bitten by the Crystal Radio bug at age 47😉
@Entity Vox hi Vox... haha, I hear ya there. I turned 40 not long ago and I am finding myself soldering tubes to PCBs and learning how to create radio and amplifier circuits for basically the first time! Got to love it!
Same scenario here. Never too late to explore, experiment, and learn about physics and technology. Radio is great fun and challenging. No chance to meet Mike or watch his videos when we were kids. I didn't know crystal sets could me sup'd up. I'm pretty sure I would have been into that. I built my crystal radio in my 200 in 1. Attached it to the TV antenna on the roof. Selectivity was poor. I thought.... When grandma was little she said they had a crystal set. Cat's whisker detector and all.... And there was only one station. Today there are many so I hear many. No knowledge about loading coils and wavetraps.
Happy New Year!
Howdy. Nice.
The antenna loading coil is awesome. Together with the antenna capacitance they form a series resonant circuit having the strongest current at the detector. In my mind this means the antenna virtual capture lenght is greatly increased.
I am bewildered that no hobby book or magazine I have seen in my location (Finland, Europe) speaks about the benefit of the loading coil although evident and easy to understand.
My gratitude for the education.
In high regards.
Thank you. I am now experimenting with tuned antenna and how it works with resonance. :)
Very cool and I hope you are seeing some results!
The LM386 audio amplifier is a nice little thing. I made small guitar amplifiers from it
This is all good but where's the build the crystal radio or are we still waiting for the parts?
Such a professional; great radios. Thumbs up !
I found the section on the antenna loading coil to be the most important. I have a crystal set that I built perhaps 10 years ago with many taps on the coil and a good variable capacitor. My antenna is an inverted L of about 85 feet length, but I had been connecting the antenna and ground across the entire coil. I will be adding a lower impedance primary and a variable antenna loading coil because you have demonstrated very well just how much difference those can make. (I will check out you loose coupler video before I build anything.)
To me, the vacuum tube amp in this video was a totally different topic which I just skipped.
Still, I found both this and your first crystal set video very informative. You do a good job of explaining how even a beginner can build one of these things.
Given the cost of some of the components, there might be a good topic in showing how to scrounge parts from old radios. I recently read a suggestion that one place to find old radios (such as old clock radios) is at Goodwill stores.
I've use silver beads from a jewelry supply shop in Santa FE ... They are round an work great
+Paul Pedrazza Wow that sounds great. When I added the turns on the loading coil, I simply butt spliced the two wire ends and kept winding.
Looking forward to Part 3. Nicely done.
Fantastic video .
Sir, where is the crystal radio part 1 video? Thank you for your work.
th-cam.com/video/QlSa3fxH1rM/w-d-xo.html
th-cam.com/video/QlSa3fxH1rM/w-d-xo.html
The reason people see your videos is because you do not use added power like batteries we all know that tubes require added power or energy batteries your videos have mainly been how to improve crystal radios without added power am i right? And so thats why your videos are so liked.
Well some folks are purists who want the radio station signal alone to supply the power. Some want to be more clever stealing power in other ways like from another radio station that is stronger and let that power a separate stage or two. And then some just add stages and a battery!
This is very good. Look to the next one.
Thanks
Carl
N4LGS here! could you make a video on varactor diode tunning . please. i enjoy all your videos. very informative. love crystal radio.
Sounds like a good subject for a dedicated vid!
I have a transoceanic and you have inspired me to build a small tube amp with the printer supply. Any recommendations? K5DVT
just watched part 3, what happened to the wave trap and diode experiments?
What size magnetic wire are you using for the windings on.the tube ,I no I don't want to thin of a wire,for that ,If anyone no ,s maybe 22gauge or 20 guage,If a lot of stuff I been collecting to do builds so I have options ,I even ordered antique diodes the standard In34 ,military grade diodes,
Could a used dual filament light bulb used as a amplifier tube? Thanks ...
great series!
C1 1000Mf 16v ???? with DC power 35v. 15:52
Boom! Well eventually Boom.
thank you for sharing... very interesting
Can you show us how to use the 1U5 tube in a crystal radio circuit?
Unfortunately most of the A.M. bands in Southern California are spanish speaking. I dont speak Spanish .
In the 70's there were two very strong stations in my neighborhood, one was KSOM clasic radio which was a few miles away, I cant renember the second one.
Bel ricevitore 👍🎶
excellent job
would that amp work with a regen radio ?
Sure!
This is great!
@:3:25 Is that 1" or 1.5" dowel? I thought you used 1.5"?
Another question @11:46 I'm confused as to what the three screws (i'll call them 1, 2, and 3 from the top of the image)
1. From antenna, is this connected to the end of the coil?.
2. ?
3. Beginning of coil?
1.5" Yup messed up there.
Onde está a tradução?
❤️👍
Dud Dud you think of this by your self
kinda like an active antenna...which is not connected..