Hello,
i had in last days email discussion with one italy guy who talked some time ago with mediaset engineer and he told him that mediaset freqs 13e/12.5w are in 8PSK. Constellation diagram of these freqs are differnet from normal 8PSK signals constellation diagrams, so we thought that it could be 16APSK: 1) fullring of clusters (16 clusters) but 16APSK has 12 + 4 in middle in diagram, so this was confusing and 2) mostly DVB-S2 receivers and pci card couldn't lock this mediaset freqs (some better like Prof card can, but with unstable notation) and 3) there is in using multistreaming on the mediaset freqs, what is typical for 16APSK (two transponders capacity in one) - screenshots are on EnoSat wepage. So since yesterday i saw 16APSK diagram on 31°E (EnoSat messaged you), where you really can see that missing 4 clusters in the middle and 12 in full ring we deduct that mediaset is running on one of the ACM or VCM DVB-S2 concept. Normal DVB-S2 freqs uses CCM (constant coding and modulation), but mediaset freqs must be running on ACM (adaptive coding and modulation) or VCM (variable coding and modulation), but not in 16APSK but 8PSK. VCM concept gives +28 % of increase in efficiency than mostly used concept CCM. That's what we dedcut.
Cody, what satellites (Ku/C band) you are receiving signals, we can try found for you some other UNKNONW/16APSK/32APSK signals/freqs with correct Symbol Rates, but without correct FEC.
PS: for example nice one 32APSK is on 37.5°W ku band, or i hope its still there, didn't check it few weeks
Regards,
DeEmEx