I know of absolutely NO subscription signals that are 4:2:2.
If the AZBox is strictly manufactured for signal theft, why does it have 4:2:2 capabilities? If it costs that much more per box for a chipset that decodes 4:2:2, then why would it be included in a piracy box?
This has been covered in many past 4:2:2 threads.
Briefly, 5 years ago the chipset was very unique for highend customer STB market and offered many options needed for a box to stand out in a very competitive European market. The target European audience was for card sharing with quality and forward compatible hardware.
AZBox was introduced in North America because a firm involved in providing theft of service STBs warehoused shipments in Miami to supply South America. The STB was one of the first to offer the tos market a key sharing solution and controlled the huge Brazilian market and several other countries for several years.
The STB was in distribution for sometime before an user researched the capability of the Sigma chipset and requested the AZBox development team if it could be activated. The 4:2:2 feature happened onto the market purely by chance.
So there is the history of why you have a 4:2:2 capable receiver. Typical for most satellite technology and distribution to be driven the dollars surrounding piracy. A few hobbyist know of the AZBox through the legit distribution channels in recent years, but the majority of AZBox owners only know of the product for piracy and have no clue as to using the other features.