, which covers February 1972. This document is part of the CIA's Freedom of Information Act (FOIA) Electronic Reading Room.
Focus on the "64" as a retro-gaming tribute and highlight your upcoming stream schedule. mondo64no135
: A 64-second WAV file with a sample rate of 135 Hz. To the human ear, it is silence. To a spectrograph, it reveals a faint, repeating waveform that matches the seismic signature of a minor earthquake that struck the Pacific Plate on January 3, 1995—a date with no significant historical record. The file’s metadata contains a single tag: TITLE: Mondo64no135_Breathe_Out . , which covers February 1972
On Reddit’s r/NonHuman, users argue that the artifacts are “datamoshing from a parallel timeline”—corrupted packets bleeding from a universe where the laws of information are slightly different. On the more sober r/codes, a pinned thread titled “Mondo64no135: An Exhaustive Failure” catalogs every dead end. The most popular theory among cryptographers is that “135” is a checksum error. That “no135” means the artifact was transmitted without error correction. In other words: we are seeing the raw, unfiltered noise of a system trying to communicate with us, failing, and trying again. : A 64-second WAV file with a sample rate of 135 Hz