HFU HF Underground
Loggings => HF Mystery Signals => Topic started by: Token on May 18, 2020, 1322 UTC
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This topic has been moved to Satellite, Radiosondes and Other VHF/UHF Signals (https://www.hfunderground.com/board/index.php?board=20.0).
https://www.hfunderground.com/board/index.php?topic=67202.0