Enigma ID P03

Spectrum image P03a spectro

Status Active
Voice N/A
Emission mode USB; Single-tone BPSK/QPSK on a +1000 Hz subcarrier
Location Warsaw, Poland
Activity pages

Known counterpart stations E11, G11, S11, S11a, M03, F11, F03

P03 and F03 are the digital flavors of the Polish 11 operator.

The designator P03 refers to the single-tone BPSK and QPSK modes. At least the following variants are known to exist:

Variant Modulation Baud Block size [bit] Sample
P03a BPSK 62.5 304

P03b QPSK 62.5 304

P03c BPSK 125 448

P03d QPSK 125 448

P03e QPSK 100 448

P03f QPSK 200 496

All P03 schedules are twice weekly, follow year-round UTC (no DST adjustments), and use up to three different frequencies depending on the month - one from November to February, another from May to August, and yet another for the remaining months. Each P03 transmission is followed by an identical repeat 5 minutes later.

F03 and P03 have been active since at least 2014, gradually replacing the older digital mode F11 over the next four years.

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