The UFO Chronicles

[smulder]

[vermes82]

https://www.researchgate.net/publication/381041896_The_cryptoterrestrial_hypothesis_A_case_for_scientific_openness_to_a_concealed_earthly_explanation_for_Unidentified_Anomalous_Phenomena

The cryptoterrestrial hypothesis: A case for scientific openness to a concealed earthly explanation for Unidentified Anomalous Phenomena

[FGD135]

Odd Stuff (Part 5)

[How Radio Hams Tried To Solve The UFO Mystery - UFO NETS] Lewis is great. He covers commercial, military, and ham radio as well as shortwave bizarrerie, like numbers stations and the sending of digital images that show up in waterfall* readouts. *A waterfall display is a graphical representation of the signals across a frequency range, generally color-coded to indicate signal amplitude or strength, displayed over time.

[MerelyGifted]

Thank you, Liebchen.