Monday, January 24, 2011

USA 224 Mil Recon Satellite Intercept

Our friend Paul Marsh, M0EYT, has posted up an FFT screenshot from a pass over his UK location od USA 224/NROL-49. The advanced KH-11 (KH-12) recon milsat uses a SGLS downlink on a center frequency of 2242.518~MHz (SGLS channel 9). Paul says the signal is pretty strong, and it also has PSK sidebands +/- 1.024 MHz from the carrier. You can view his FFT at