Crystal Radio with Fool's Gold for Detector

[toy741life]

AHAHAH thats indian!!!

[sallyt17]

A great project. For what it's worth my simplest Xtal set made during World War Two, had a home wound broadcast coil, a tiny piece of shiny coal as a detector, and a tiny coiled piece of bee-hive frame wire for a cats-whisker. I listened with an old telephone ear piece rescued from the local rubbish dump. With a simple outdoor wire aerial I heard two stations up to 100 miles away.

[co2isgoodal]

I have been building xtal radios for years.

Iron pyrites work pretty well.

I was actually able to get some DX with a razorblade detector. 300 miles, unamplified.

[infowarguy]

It's picking up Cell PHONE!!

[TheKC1ML]

LOL, that was s cool!!!

[XtalQRP]

Nice video. I have a 1920's homebrew set that uses galena for a detector then feeds the rectified output into a Marconi S215 tetrode for AF amplification. Crude but effective, I hear the continent nightly from Cornwall. Tunes 350 - 920 khz.

Kind regards,

Robs/M6GLD

[lostnmusik]

As a kid , Not sure when that ended, I built a crystal radio using a Boston company's Gillette blued double sided razor blade and a short piece of pencil graphite pressing on the blued surface of the blade. It was tough to wrap stiff wire around the short pencil lead without breaking it but it worked great - Science is still fun even at 62 years old. Bob E N1UUE Mexico Maine USA

[artifactingreality]

now throw it away and buy a radio.

[thedarkone2134]

@artifactingreality Why?

[PoirierMike]

LOL.

This is a great find. Thank you for sharing.

[foonty]

lol...hindi radio

[theparadoxparadigm]

@srdickens I would say that your friend was the attenna and the water pipe was the ground. The circuit started as radio waves into your friend then the earphone then to the pipe ant then the ground.

[toadabc]

I don't understand any of it, but I enjoyed the video all the same. The irony is that I am an electrician, but never understood electornics.

[Mackingster]

De Ke7dbx, cool video.

[workensmart]

I'm going to make a crystal radio as a week end project it looks like fun.

[khryzalids]

Pyrite?

[visor109]

This is a great video! Bravo for making this!  Excellent job!

This does remind me of the Star Trek episode "The City On the Edge Of Forever " where Kirk and Spock are in the boarding room in the 1930's, and Spock built his own radio.

[Frank979797]

its not a rock, its a mineral

[beaman220]

Ahhhh Terrorist low band! lol

[crob227]

could you use this as a power sorce....

like use an igntion, coil, secondary, as a antenna and the primary as the generator  just a thought.

[kazumo3]

The search ore radio is a starting point of the electric circuit.

I have made radar from the ore radio.

[Millertaker]

Hi, I wish Know how to do a radio of Galena with a common electronic components

Tanks

[killerdalek]

Simply use a germanium diode instead of the galena!

[watcher818]

@killerdalek You could do that of course, but part of the fun is using Galena or other material as a detector, then manually finding the sweet spot where the unit is detecting..

[doodlechemical]

Wish I was your son

[madisonhack]

My dad who was an electrical engineer showed me how to make a radio with a penny, a paper clip, (some gum to hold the two together), and a headphone. You can also do a similar thing with a razor blade (they had emergency kits with this for a detector in WWII). Dad's are pretty cool, too.

[QVXS77]

the "detector" is a rectifier

[weetobe]

Quite interesting- I used to build crystal radios for BC listening during boring lessons at school.

73 OH3WE

[48phantom]

Thank you so much for the video demonstration and taking time out to show us this. Nothing beats the hands on experience to understand these concepts.

[munichman1968]

cool!! vy 73 de DG1MJH

[INBEELDvideo]

Nice video's like this can bring interest fo technique to young people... nice job

[subsilico]

Nice, wish i had been able to make such a cool radio when i was a boy