Nilkantha Chatterjee on Instagram: "[19/365] How #sstv Works: The Science of Images via Radio #hamradio SSTV (Slow Scan Television) is an analog image transmission technique that works within a narrow bandwidth. It’s a fascinating 4-step process that allows the International Space Station to beam photos down to Earth using nothing but radio waves. ​In this video, I break down the 4 stages of SSTV: ​Image Sampling: How the image is scanned line-by-line. ​Frequency Encoding: Mapping pixels to spec