NOAA-15
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NOAA-15 is a weather forecasting satellite run by NOAA. It was launched on 15 May 1998, and is currently operational, in a sun-synchronous orbit, 807km above the Earth, orbiting every 101 minutes. It hosts the AMSU, AVHRR and High Resolution Infrared Radiation Sounder (HIRS) instruments.
APT transmission frequency is 137.50 MHz