How to make the world's easiest Radio ! Do it yourself at home!

In the 1960s elementary schools a lot of your builds were common practice during science class, this built a hands on science foundation in many young Americans. It's sad to see that today's young students don't receive science hands on like it was done in the 1960s.

More of these simple experiments or projects are required to create an interest in young kids. You have done an excellent job. Thanks.

My brother and I use to buy Galena radio, very simple device you put a wire to ground, small earplugs in your ear, twiddle a knob who travel along the Galena stone, to find a station and you had a receiver. Then with old tech books, we build basic amplifiers, who needed a 3V battery plug the outlet to it and a speaker the other side and we had proper radio :o)

Well, I was expecting a simple broadcast from a nearby radio station.

Looked for this a time ago, but didn't found. Now, YouTube recommended me this video. Better late than never :). Thank you.

This was the sort of thing that got me interested in engineering when I was a kid. Very nice! Another simple one, if you haven't already covered it, is a crystal radio. I used to make them as a kid and made them fit inside a ball point pen (except the earpiece, which stuck out the bottom) and sell them to class mates. ...that plus simple shockers made from nothing but a relay and a battery.

I love this re-creation of the Hertz experiment! Well done!!

I will use it to help my son's physics assignment. Thanks very much from Istanbul.

The simple amplification circuit was very interesting, you have re-invented hertz radio :-) большой молодец

Just like a Coherer Receiver minus the Coherer Switch. It is also like a tiny Spark Gap Transmitter. Cool video.

The way this video highlights the innovative features of this device is truly impressive.❤

Very informative. Spasibo Thank you

Spark gap transmitter. Very good. Same can be seen in a car if you use copper wires going to the spark plugs. You will hear the pop pop pop on the radio. Very early jamming technique too. Good job!

Grandios! Thanks a lot Kisses from Bern, Switzerland

In 1897 Hertz made the first spark gap transmission. He used a high voltage source with a spark gap in series with a coil forming a resonant circuit. He used an identical coil on the receiving end. Detection was with a coherer tube. He was able to transmit an electromagnetic wave pulse wave through the air to a distance of a number of meters across the room. This was actually the first man made radio frequency pulse. Very soon after different and much more efficient ways of detecting radio waves were innovated. It is interesting that with no resonant coil this experiment works. It is really a very crude inductive reactive transmission. It is like forming a capacative coupling using the air as a dialectic between the transmission and receiving antennas.

Very interesting. Thank you.

Thats so damn cool. Have to try this with my son

Very nicely done spark gap radio build. To think that this was how it all started, early Marconnni sets worked this way. Even the signals sent from the Titanic were sent using a variation of this. Kudos!

A very good idea. Thank you

Great to know as we might need this soon for survival!