Slow Scan TeleVision (SSTV) is a picture transmission method used mainly by amateur radio operators, to transmit and receive static pictures via radio in monochrome or color. A literal term for SSTV is narrowband television. Analog broadcast television requires at least 6 MHz wide channels, because it transmits 25 or 30 picture frames per second (in the NTSC, PAL or SECAM color systems), but SSTV usually only takes up to a maximum of 3 kHz of bandwidth. It is a much slower method of still picture transmission, usually taking from about eight seconds to a couple of minutes, depending on the mode used, to transmit one image frame.
Latest photos from SSTV transmission
There are several programs available for TX / RX SSTV, I most often use DM780, this program is included in the package of Ham Radio Delux software, which supports not only SSTV, but also other digital e.g. PSK, RTTY.