The Broadcast Digital Transition was a national government mandate that, as of June 12, 2009, all broadcast TV signals (i.e. ABC, NBC, CBS, PBS) must be broadcast exclusively in digital format. If you were a cable or satellite TV customer, the government Broadcast Digital Transition did not affect you—you were already getting these channels through your cable provider. If you were receiving your television channels over the air instead of through a cable or satellite service, you would have needed a DTV converter box to continue receiving the broadcast channels.
In June 2012, Comcast took the final step in their digital network enhancement by converting all remaining analog channels to digital, which will result in customers receiving more channels and digital pictures and sound on every TV.
As of October 3, 2012, all Comcast video services will be transmitted exclusively in digital format. This means that customers will need to have a digital set-top box or digital adapter from Comcast, or a third party device with a CableCARDTM for each television on which they wish to continue receiving Comcast video services.
Comcast will provide the required digital equipment to their customers in accordance with their service tier. Current Basic-tier customers may receive up to three digital adapters at no additional cost. Customers who subscribe to higher tiers of service will be provided up to one digital set-top box and two digital adapters at no additional cost. Those with bulk service contracts will receive digital equipment in accordance with their contract terms. Additional equipment may be obtained for an additional fee.
Comcast customers may call toll-free at (877) 634-4434, visit a Comcast service center, or go on-line https://digitalnow.comcast.com/
to determine the best solution for their home.
For more details on Comcast’s Digital Migration, visit the website: http://customer.comcast.com/help-and-support/cable-tv/what-is-the-comcast-digital-migration/