P03 numbers station
From Signal Identification Wiki
P03 is a family of digital PSKPhase-Shift Keying modes that are used by the "Polish 11" numbers station operator. This operator is likely a Polish intelligence agency.
P03 has at least 8 sub-modes, P03e to P03l. P03 modes use very narrow bandwidth so transmissions can be hard to notice and may be mistaken with QRM.
Samples[edit]
All different sub-modes can be collected here. The main sample is an unknown sub-mode.
P03k sub-mode |
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Frequencies[edit]
Polish 11 is known to use frequencies between 4 and 21 MHzMegaHertz (MHz) 10^6 Hz and P03 transmissions happen in this range.