DeForest Crosley 51 radio regeneration circuit part 2

[bharper78]

I am just starting to learn about electronics and radios as a hobby. I have a Crosley 51 that is in pretty bad shape and my plan is to restore it and learn the basics along the way. This video has been very helpful, though I don't think I have wrapped my brain all the way aroud it yet. Is there any way you can provide the wiring diagrams with the different circuits color coded? I would like to be able to print those out to study.

[ART13autotune]

good work, for those who want to build a regen, might want to read, how to build the twinplex regenerative receiver and how to build your first vacuum tube regenerative receiver each by T.J. Lindsay, also see any early ARRL how to become a radio amateur, check out 1930's how to radio books, back then the regenerative receiver was the receiver most hams and SWL's built and used tnx om de w8znx dit dit

[AllAmericanFiveRadio]

Thanks for the information. They are fun to build and use. 73

[Agrajag042]

What a great video. This is very concise, easy to follow and I appreciate the time and effort. You're a good teacher.

[AllAmericanFiveRadio]

Thanks. I hope it helps. Unlike a single processor computer where only one thing can happen at a time, V1 is doing all three jobs at the same time.

[Hammondlover2]

That's so simple I just might build something similar.

[AllAmericanFiveRadio]

I think YouTube has a problem with comments applets, left a comment and it's not here? So I'll do it again.

Anyway that would be fun to build and you would learn a lot more about the early radios your interested in.

[joernone]

Rick,

You've really got a great collection of old radios. And as usual, your vids are extremely clear and informative. Ever thought about starting a repair business?:)

Also, where do you get the time to do your vids? I barely have time to sleep.

Regards,

John

[AllAmericanFiveRadio]

Hey John,

Thanks. I do need to think much hard about a repair business. Right now I should be printing wedding pictures, but its one of those things that I have to be in the right mood for, or the picture quality suffers. So I'm making vid's while I have the time.

Regards,

Rick

[radioam232]

Good to see that such a simple schematic works so well. The essentials of the radio. Simple and in the mean time very complex what is going on with these two (!) tubes. Beautiful video. Also good to see that the constructive know how was very essential in these days, and the quality of the components. The schematic is "nothing" without the components and vice versa. If you did not know how, even with the schematic you could not build it succesfully.

[AllAmericanFiveRadio]

You're exactly right. I have worked on, and I'm sure you have also, many circuits that just the part position is extremely important to its successful operation. And that shows up nowhere in the wiring diagram. At first glance this circuit looks like nothing, but V1 is doing a lot of work. Thanks.

[CameramanLink]

Wow! There's so much going on in that simple little circuit! I was wondering, why doesn't the postive feedback in the V1 circuit cause oscillation? Also, how is the loudspeaker driven since there is no audio output transformer in the circuit?

[AllAmericanFiveRadio]

If you move the tickler coil to close to the antenna coil it will start to oscillate and will start to transmit. I did remember to demo of this in part1. The positive feedback is set just strong enough to amplify the signals with out oscillating. It takes a while to tune in a station, but it works surprisingly well. The Horn Speaker is actually an old earphone and they usually range from 1000 to 2000 ohms. So there's no output transformer.