HFU HF Underground

Loggings => HF Mystery Signals => Topic started by: Gr0undPlan3 on November 04, 2025, 2003 UTC

Title: UNID 29659 kHz USB
Post by: Gr0undPlan3 on November 04, 2025, 2003 UTC

Just inside the 10M band so it could be an amateur testing something..

Almost sounds like really badly modulated voice signal at times. Recording it now and will post a link shortly.

Signal is 2 kHz wide, made up of 20 or 22 individual tones.

Circling back around to this finally.. Link below.

https://youtu.be/eiPu6J5AJGU (https://youtu.be/eiPu6J5AJGU)

Title: Re: UNID 29659 kHz USB
Post by: Gr0undPlan3 on November 06, 2025, 1456 UTC

Same signal at 1456 UTC today.

Title: Re: UNID 29659 kHz USB
Post by: Token on February 16, 2026, 1427 UTC

Instead of sideband, try FM.  This sounds like a ham radio operator (or repeater), in FM mode.  And 29659 kHz is dead in the FM portion of 10 meters.

The tones are jsut that, CTCSS tones, in this case it sounds like tone 14, 107.2 Hz, but that is jsut going by ear, I did not measure it to make sure, so it could be 13, 103.5 Hz, or 15, 110.9 Hz.

T!