- A rooftop or in-home antenna (a.k.a. ATSC "over-the-air")
- Digital basic cable (a.k.a. Clear QAM)
You cannot use a cable or satellite box with Simple.TV, since it is designed to work with unencrypted signals. You won't be able to get HBO, Showtime, ESPN or pay-per-view channels.
But, you will typically be able to get FOX, NBC, CBS, ABC, PBS, CW and many local and Spanish-language channels.