NOAA APT Satellites

NOAA APT Satellites transmit on frequencies between 137.1000 and 137.9125 MHz FM using between 30 and 40kHz bandwidth. WXtoImg will function with receivers using a bandwidth as low as 12kHz, but there will be some image degradation. Receiver sensitivity should ideally be about 0.2uV to 0.25uV. You will need a special antenna to receive the circularly polarized signals. Each satellite passes overhead several times a day for about 10-15 minutes. Check File -> Satellite Pass List… in the WXtoImg menu for a list of pass times for your location. Be sure to use the menu option File -> Update Keplers to ensure you have the latest satellite orbital information.

Active NOAA APT Satellites

  • NOAA 15 on 137.6200 MHz FM
  • NOAA 18 on 137.9125 MHz FM
  • NOAA 19 on 137.1000 MHz FM

Decommissioned NOAA APT Satellites

  • NOAA 11 Decommissioned Dec. 16, 2011
  • NOAA 12 Decommissioned Aug. 10, 2007
  • NOAA 14 Decommissioned May 23, 2007
  • NOAA 16 Decommissioned June 9, 2014
  • NOAA 17 Decommissioned April 10, 2013

Additional NOAA Satellite Information

Current NOAA APT Satellite Tracks