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Loggings => HF Mystery Signals => Topic started by: GC on July 13, 2018, 2213 UTC

Title: UNID wideband signal 13995.6 kHz
Post by: GC on July 13, 2018, 2213 UTC

UNID wideband signal 13995.6 kHz just below the amateur 20m band


very strong with some fading in Eastern Ontario  SINPO 41144.


tuen 13995.6 kHz in USB  signal is about 5 kHz wide. Sounds a bit like HFDL or one of the TOR (i.e. sitor) modes but I am not quite sure what it is.


I used the KiwiSDR TDoA and my feeble attempt puts it around Dallas Texas. I will post some images, recording, etc later on.


cheers, Graham near Ottawa Canada

Title: Re: UNID wideband signal 13995.6 kHz
Post by: MDK2 on July 13, 2018, 2224 UTC

Nothing copied in Denver, CO, USA at that frequency as of 2224 UTC.

Title: Re: UNID wideband signal 13995.6 kHz
Post by: GC on July 13, 2018, 2243 UTC

Not surprisingly, faded out or stopped at 2018-07-13 22:16UTC


cheers, Graham near Ottawa Canada

Title: Re: UNID wideband signal 13995.6 kHz
Post by: GC on July 14, 2018, 0035 UTC

some screen grabs - maybe this will work, maybe it won't, dircect links also provided


https://www.dropbox.com/s/9lkcalh9ktedfii/unid_2_13998_20180713_2143.jpg?dl=0



(https://www.dropbox.com/s/9lkcalh9ktedfii/unid_2_13998_20180713_2143.jpg?dl=0)


https://www.dropbox.com/s/x1lm7bb00k65blc/unid_13998_20180713_2143.jpg?dl=0


(https://www.dropbox.com/s/x1lm7bb00k65blc/unid_13998_20180713_2143.jpg?dl=0)


https://www.dropbox.com/s/m95c9rnmouawwp4/TDoA%20map.png?dl=0


(https://www.dropbox.com/s/m95c9rnmouawwp4/TDoA%20map.png?dl=0)


and finally a short recording


https://www.dropbox.com/s/xju9vuc1hxh2jwr/unid_13998_20180713_2143.wav?dl=0


cheers, Graham near Ottawa Canada

Title: Re: UNID wideband signal 13995.6 kHz
Post by: GC on July 14, 2018, 0036 UTC

I guess I will have to work on the including images in my postings.


cheers, Graham

Title: Re: UNID wideband signal 13995.6 kHz
Post by: GC on July 14, 2018, 1626 UTC

For now this link https://www.dropbox.com/sh/5ft6rovgskodzdg/AACG7uNgNNLgWda4fkGU_2wMa?dl=0


will take you to a dropbox folder where you can find the images, file names should be intuitive.


cheers, Graham

Title: Re: UNID wideband signal 13995.6 kHz
Post by: GC on July 15, 2018, 2006 UTC

I have been advised that this the North Korean diplo ARQ system that runs at 600 and 1200 baud. What I heard was at 1200 baud.


cheers, Graham near Ottawa Canada