Comcast has decided to start encrypting even their basic cable channels, forcing customers to use a settop box on every TV where they want to watch cable TV. Previously, basic cable channels would just require hooking a TV up to the coax jack in the wall.
We are beginning to proactively notify customers in select markets that we will begin to encrypt limited basic channels as now permitted by last year's FCC B1 Encryption Order. While the vast majority of our customers won't be impacted because they already have digital equipment connected to their TVs, we understand this will be a change for a small number of customers and will be making it as convenient as possible for them to get the digital equipment they may need to continue watching limited basic channels.
Comcast will provide up to two DTAs free for two years, provided that the customers do not currently have equipment on their account. Customers will also have to request the settop boxes during the offer period around the time of encryption. Comcast has put up this FAQ about what to expect from the new encryption.