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I've had conversations with people blitz'd out their mind that where more coherent, intellectual, and factual than what's on History channel these days.

Technically it's closer to 1.7GHz, but most Geostationary birds transmitting on L band are slightly below that. GOES is at 1.68GHz (roughly) while Polar orbiting satellites (think NOAA 15-19) are just above 1.7GHz.

thinking on this a bit more I suspect they would have been seeing iridium flares. that network operates from 1610-1626.5MHz and iridium flares are quite visually spectacular.