Turn your Android phone or tablet into an audio function generator
Shortwave pirate radio station Wolverine Radio was on the air last night, with their typical excellent signal, excellent audio, and excellent programming. As is often the case, they finished their show with a Slow Scan TV (SSTV) image. SSTV is a way of sending an image using audio tones.
Here’s a video of the image, while it was being received. As you can see, it takes about 2 minutes to send a single image. Hence the name Slow Scan TV.
Here’s a larger video image, if you don’t mind rotating your head to watch it:
The image was decoded using the SSTV App for the iPhone, iPad, and iPod Touch which I will now shamelessly mention is
Here’s what the transmitted image looked like, by the way: