BEYOND THE CRYSTAL RADIO

This is some new level radio. Thanks Stan Lee

That was fantastic.... thank you for sharing your knowledge

Thanks for the video! : ) . Thumbs up Indiana USA.

Going between crystal set radio and regenerative receiver is a simple oscillator loosely coupled to the tuning coil of a crystal set tuning coil to boost selectively of tuning circuit but not the volume.

Nice instructional video, thank you for sharing.

My first regenerative receiver was completed in 1953, when I was twelve years old. Now I use an SDR transceiver with a new analog power supply and an extra external auto-tuner. Some things you build and never forget! Good luck with your projects! de KQ2E

Just found this channel and I like it very much.

thank you, sir.....love it....

Enjoyed watching this excellent video presenting the elegant simplicity of older technology... Absolutely magnificent presentation. Clear, concise and thoughtful of beginners potential problems regarding their circuits . As a professional reminds me of how many of us began years past.

Great project, and enjoy your style! Subscribed. b.

I'm a newby here very interesting and a very good channel indeed thanks for sharing.

I built a regen years ago it worked very well id change that one use a jfet or mosfet in place of valve this way one 9 volt bat and a few resistors 😃

Just wow... Your radio looks wonderful

This Video Is So Informative And Cool. I Love The Details You Go In Because Im DumbDumb In Radio Things Almost, Im New To HAM And All That

Hi. This is interesting. I am glad to see valves operating at a low plate voltage of 27V. It was Tommy Flowers of the British Mail Service who first decided that tubes (or valves) should be operated at a low voltage to ensure reliability for the first, early computers during WWII, which were used to decipher Hitler's Enigma codes. Tommy Flowers' theory was this: If we operate the valves at a low plate voltage and current, then we also need a low heater voltage and current. So we operate the valves at Low Power. Then the valves will work reliably enough to build the Colossus computer with thousands of valves which will never fail. And actually, his theory was proven to be correct. But was soon replaced by solid state transistors. Then integrated circuits. And now we watch these videos and write these comments on Youtube. :-)

I'm retired if I. Want to hear a lower frequency than normal radio could I lengthen the long coil and ads more taps. Thank you for your knowledge. Very nice help fora beginner here.

Hey thanks for the inspiration! I have the book by Homer Davidson and I've been collecting parts and pieces including the air variable caps and 1S4 tube. I have all the parts now, so maybe I should get going, right? By the way I did build a regenerative vacuum tube receiver (my first tube radio project) following an article published in Nuts and Volts by Dick Whipple back in May 2015. It used a single 12AU7 tube but he cheated a bit by using an IC OP AMP module to boost the audio to drive an 8ohm speaker or standard headphone. It works pretty well except that the high end of the AM broadcast band isn't covered very well. It gets cut off at the lowest end (fully open, lowest capacitance) of the tuning cap. So, I guess I've got to rewind the tuning coil to increase the inductance in order to move the frequency coverage down a bit. I think that I've got to add a few more windings to the spider coil but I'm not sure how many additional turns I need to add. The spider coil is a bit odd in design. It includes a separate set of windings to couple the antenna and a single tuning winding that also incorporates the tickler tap. So, I'm not sure how to change the ratios of winding to make it all work efficiently. At any rate the project that you are presenting looks a lot simpler and easier to troubleshoot. Onward and upward!

Thanks for sharing. The little regen set looks nice. I like the highlighter tip. As you kind of said, getting hold of high impedance headphones for projects like this may be difficult these days. Perhaps, one alternative is a high impedance earpiece. These still seem to be avaible new on line.

Wow👍👍🇺🇸🍀🍀🍀🍀🍀

When will be about the simplest transmitters for voice transmission?)))