Unid 100Bd PSK2 signal recorded on 4844.0 KHz and 6819.5 KHz USB (Figure 1)
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| Fig. 1 |
The demodulated bistreams, after differential decoding, show 2 different 133-bit dimension periods: supposedly, the first 1 (4844.0 KHz, Figure 2) is simply a combination of the origin and destination address while the second 1 (6819.5 KHz, Figure 3) seems to mention to sending a message - respective times repeated - to the correspondent. It's worth noting in the demodulated bitstream of Figure 2 what seem to be 5 "sections" following the header (that's the same in the 2 bitstreams).
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| Fig. 1 |
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| Fig. 2 |
More material is needed to full realize the nature of specified communications, comments are welcome.
