The National Oceanic and Atmospheric Administration (NOAA) has been imaging Earth with satellites since 1975. These satellites are used to monitor weather patterns, climate change, and natural disasters. The data is transmitted to Earth in real time from these satellites, and can be received by anyone in the signal path.

In this post I will be collecting and displaying telemetry from the NOAA 18 satellite. The NOAA 18 satellite is in a polar orbit, meaning it orbits over the north and south pole. It takes images of the earth, and imediately transmits the image at a rate of 360 lines per minute. The data from this satellite is transmitted at 137.9125 MHz with Analog picture transmission APT.