Mysterious Shortwave Fragments

Mysterious Shortwave Fragments (Amateur Tape Record from 1998)

Secret Shortwave Signals That Remain An Unsolved Mystery

Ringway Manchester

STRANGEST Shortwave Radio Frequency Sound You'll Ever Hear - 7077.6 kHz

Shortwave radio uncovers a real spy transmission

Shortwave Oddities and Unknown Signals, VOL. 1 (link for 2023 Collection in description)

Shortwave Investigations

Short Wave Fragment - UNID Interval Signal (recorded in 2006)

A Mysterious Shortwave Jammer From The Far East

Ringway Manchester

Signals From Afar

The Shortwave Mystery - Topic

Shortwave UNID Mystery Signals

strange sounds on shortwave radio at night

Fragments

Shortwave Research Group

Shortwave Radio Recording

badgerbadger_badger Poppy?

HM01 - The Ultimate Radio Mystery

NPR's "Lost and Found Sound" radio feature, "The Shortwave Numbers Mystery."

Unusual broadcast heard today on 17362 Khz USB Shortwave

OfficialSWLchannel

5 Strangest Radio Stations & Most Mysterious Transmissions

Strange Signals on Shortwave

Mysteries of Shortwave Radio

The Mystery Sounds Of Short Wave Radio, WebSDR * Warning - NO Music*

Matthias Wunderlich