HFU HF Underground
Loggings => HF Mystery Signals => Topic started by: Teotwaki on February 26, 2021, 1528 UTC
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literally sounds like an old scifi movie UFO or ray gun
(https://i.ibb.co/p42MTrm/blaster.png)
1. Frequency 7500 to 7515(kHz)
2. Time (UTC) 15:28
3. Duration continuous
4. Receiver Mode CW but the waterfall tells all
5. Receiver Location Half Moon Bay Omni
6. Description. Looks weirder than it sounds
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Tough to be sure without a recording, but possibly a jammer aimed at KTWR. KTWR should have been active at that time in Korean, and both North Korea and China have been known to jam a variety of signals in Korean. However, your description is more along the lines of a Vietnamese jammer than the typical NK or China models.
T!