|Enigma ID||F03, P03|
|Emission mode||USB; FSK, 4FSK, BPSK, QPSK|
The Polish 11 operator uses a custom modem to broadcast digital messages. Its various waveforms are designated F03 (FSK and MFSK) and P03 (PSK).
All digital schedules are twice weekly, follow year-round UTC (no daylight saving), and consist of 2 identical transmissions 5 minutes apart. Typically, each day of the week carries a different message, which is repeated week after week until it's replaced at beginning of the next month. Null messages do not appear to exist in these modes.
Most, if not all, digital schedules are associated with E11 and S11a transmissions taking place on the same days of the week, although the exact nature of this relationship is not established. The associated analog and digital broadcasts can be anywhere between a few minutes and a few hours apart.
The following 16 variants of F03 and P03 are currently on the air. Related variants are highlighted using the same color.
|F03c||FSK||400 Bd||960 Hz||+1120 Hz||448 bits|
|F03d||FSK||200 Bd||400 Hz||+600 Hz||448 bits|
|F03f||FSK||400 Bd||800 Hz||+1200 Hz||496 bits|
|F03i||FSK||100 Bd||800 Hz||+1200 Hz||488 bits|
|F03j||4FSK||100 Bd||400 Hz||+1200 Hz||448 bits|
|F03k||FSK||400 Bd||800 Hz||+1200 Hz||448 bits|
|F03l||FSK||100 Bd||200 Hz||+700 Hz||448 bits|
|P03d||QPSK||125 Bd||-||+1000 Hz||448 bits|
|P03e||QPSK||100 Bd||-||+1000 Hz||488 bits|
|P03f||QPSK||200 Bd||-||+1000 Hz||496 bits|
|P03g||BPSK||50 Bd||-||+1000 Hz||464 bits|
|P03h||BPSK||100 Bd||-||+1000 Hz||512 bits|
|P03i||BPSK||62.5 Bd||-||+1000 Hz||464 bits|
|P03j||QPSK||100 Bd||-||+1000 Hz||504 bits|
|P03k||BPSK||100 Bd||-||+1000 Hz||480 bits|
|P03l||QPSK||100 Bd||-||+1000 Hz||464 bits|