HFU HF Underground
Loggings => HF Mystery Signals => Topic started by: RobRich on November 19, 2025, 0956 UTC
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It looks digital, but since I am not big into digital UTE activity, any ideas? Present here in FL and at NA5B in Washington, DC.
0955z - OTA.
Click pics to enlarge.
(https://i.ibb.co/VWF27YfS/Screenshot-20251119-043944.png) (https://ibb.co/VWF27YfS) (https://i.ibb.co/zkyvFtK/Screenshot-20251119-044009.png) (https://ibb.co/zkyvFtK) (https://i.ibb.co/XNGK2dZ/Screenshot-20251119-044131.png) (https://ibb.co/XNGK2dZ) (https://i.ibb.co/0yqFgJSt/Screenshot-20251119-044216.png) (https://ibb.co/0yqFgJSt) (https://i.ibb.co/mVxSwzy8/Screenshot-20251119-044409.png) (https://ibb.co/mVxSwzy8) (https://i.ibb.co/Q2NXNcr/Screenshot-20251119-044501.png) (https://ibb.co/Q2NXNcr) (https://i.ibb.co/Mys267fV/Screenshot-20251119-044758.png) (https://ibb.co/Mys267fV)
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I also logged a wideband, 50 kHz wide digital buzz, with some fading, S3-S4 out of 5, around 0910 UTC the morning of November 24th, which was 0110 PST in my area of the NW US.
So it's apparently a repeat digital buzz operator. I heard it on my XHDATA D808 & 25 ft indoor wire.
The 40M band wasn't exactly hopping, so I had little propagation to compare the buzz to, although I did hear a couple weak LSB signals from Japan on 7120, 7147 and 7175, and the HHH Net was active with a few stations from probably the Midwest during the same time period.
The digital buzz was gone by 1031 UTC.
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This is an HFT (High Frequency Trading) waveform. It has been around, in one form or another, for a few years.
I recently did a video of it, showing the Morse ID, WM2ZXV,
https://www.youtube.com/watch?v=9Y7b6210BUI
T!