The Letter That Predicted a Radio Signal-and a Buried Transmitter
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The Letter That Predicted a Radio Signal-and a Buried Transmitter
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Fear and fascination collide when a hand-addressed letter, stamped at 7:14 AM on November 4, 2017, described every pulse of a hydrogen-line radio signal that began broadcasting ten hours later-before the transmission existed; who wrote it and why would someone need an inside listener? Was the letter a warning, a confession, or something more calculated to ensure the hoax succeeded?
In this episode, we walk through the timeline at Crestline Radio Observatory, the people on duty that night, and the physical clues-from a white ceramic mug eighteen feet up on a secondary dish to a frozen security camera loop-that connect a transmitter buried on site to a handwritten envelope. What do those clues reveal about who had access and how the signal was made to seem extraterrestrial?
Person: Monica Meyer
Date: November 4, 2017
Location: Crestline Radio Observatory, eleven miles east of Sulphur Flats
Item: White ceramic mug with blue stripe found on feed horn, eighteen feet high
Event: Narrowband hydrogen-line signal with a repeating 4 minute 12 second cycle
- Letter was date-stamped at Sulphur Flats Post Office at 7:14 AM on November 4, 2017.
- Signal began broadcasting on the hydrogen line at 5:47 PM, 10 hours and 33 minutes after the letter was stamped.
- Signal pattern repeated every 4 minutes and 12 seconds with short and long pulses.
- Mug photographed by Lisa Bennett at 6:48 AM, seen from 200 yards away with a 600mm lens.
- Security camera over the secondary dish looped a static 4-minute segment during a 59 minute 48 second window when the mug was placed.
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