HFU HF Underground

Loggings => HF Mystery Signals => Topic started by: Nomadiq on August 11, 2021, 1518 UTC

Title: UNID 9831 kHz RTTY?
Post by: Nomadiq on August 11, 2021, 1518 UTC

FSK in 31 meter broadcast band. Anyone know the origin of this 'intruder'? I can not get a decode of its signal.

Title: Re: UNID 9831 kHz RTTY?
Post by: tiNG on August 12, 2021, 0821 UTC

I have NCTAMS LANT Norfolk, VA with TX Davidsonville, MD (38.966694, -76.683083), listed on 9830,0 kHz. Probably you were a bit misstuned (or they were...).

Mode is STANAG4481 most likely with KG-84 encryption so no decoing possible.

Hope this helps.

Title: Re: UNID 9831 kHz RTTY?
Post by: East Troy Don on May 03, 2022, 1501 UTC

Strong reception 9830 khz @ 14:57.   Concluded 14:59

Title: Re: UNID 9831 kHz RTTY?
Post by: Josh on May 04, 2022, 1926 UTC

USN likes to fsk around these parts of the hfbc band.