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Retrieving APT Signal from NOAA Weather Satellite - QFH Antenna Test

By Don Carona

The image above is a homemade quadrifilar helix antenna.

Result after decoding Automatic Picture Transmission (APT) from NOAA-19

Visual example of radio signal from NOAA-18 using CubicSDR

Resampled Signal (WAV ~14MB) from NOAA-19

Click to hear the satellite signal. This is a large file. Please give it time to download.

Note: Strongest signal starts about 5 min into the recording.