Slow-scan television

Slow-scan television (SSTV) is a way for people to send pictures over radio waves. You know how sometimes you can talk to people over a walkie-talkie? Well SSTV lets people send pictures to each other that way too!

So how does it work? Instead of talking into the walkie-talkie, you need to connect a special camera, called an SSTV camera, to your radio. This camera takes a picture and then sends it over the radio waves just like you would talk to someone.

But it's not as simple as just sending a picture right away. The pictures are actually broken up into tiny little pieces called pixels. Just like how you can see individual dots on a TV screen, each pixel is a little dot that makes up the picture.

The camera sends each pixel one at a time, slowly, over the radio waves. This is why it's called "slow-scan" television. It takes a lot longer to send a picture this way than it does to just talk to someone, but it's really cool because you can see pictures from far away!

When the other person gets all the pixels, they put them back together like a puzzle to make the picture. It's kind of like if you got a puzzle in the mail and had to put it together yourself.

SSTV has been around for a long time and is still used today by amateur radio enthusiasts all around the world. They use it to share pictures of things they see on their radios or to send messages in a fun and interesting way.