Hey. To watch all the channels that NBC provides, you need cable TV. A large number of cable providers cooperate with NBC, and therefore their channel is included in the basic subscription of their tariff packages. And if for some reason you do not have this channel, then call nbc phone number and they will tell you where and how you can watch them again. It is worth noting that if you install their mobile application, then part of the TV show can be watched in free mode.