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Author Topic: UNID 8188 CW 1610 UTC 3 July 2024  (Read 673 times)

Offline stendec

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UNID 8188 CW 1610 UTC 3 July 2024
« on: July 03, 2024, 1644 UTC »
Using the KFS SDR this morning, I was hearing weak (S1-2) numbers station sending 4-digit number groups in CW on 8188 kHz. The 4 digit groups were sent using 'cut numbers', where 0 is sent as T, 1=A, 2=U, 3-7 sent normally, 8=D, 9=N. The transmission lasted for at least 10 minutes and ceased at 1620UTC. No callsign was sent .

On a hunch that  at this time of morning on 8MHz that it was probably from Asia, I switched to Indonesian and Phillipine SDRs and the signal was stronger (S4-5) there. I then switched to an SDR in Taiwan and the signal was S9+10dB. This numbers station is likely located in Taiwan or China.




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