 Commercial DBS services are the primary competition to cable television service, although the two types of service have significantly different regulatory requirements (for example, cable television has public access requirements, and the two types of distribution have different regulations regarding carriage of local stations).The majority of ethnic-language broadcasts in North America are carried on Ku band free-to-air.The largest concentration of free-to-air programming is on Galaxy 19 at 97° W. Pittsburgh International Telecommunications and GlobeCast World TV offers a mix of free and pay-TV ethnic channels in the internationally-standard DVB-S and S2 formats, as do others.