A Linux toolkit for handling signals over the automatic picture transmission (APT) protocol. ## Intro to Automatic Picture Transmission Automatic picture transmission (APT) is an analog image transmission format developed for use on weather satellites in the 1960s. While only three modern satellites, NOAA 15, NOAA 18, and NOAA 19, transmit on the APT protocol, building a reception station is cheap and simple. The images can be quite high qualitythey natively have a resolution of 4 km/px. It is reasonable to expect at least one good-quality satellite pass (and, thereby, opportunity for image downlink) per day. WWW: https://github.com/rsj56/apitran