Dual tuner means the DVR can record two shows at the same time. (You can even watch a third show that you have already recorded.)

TiVo HD DVR and TiVo Series3 HD DVR

Can be set up to work in any of the following configurations:

• Digital cable only
  (record 2 shows at once, requires up to two CableCARD™ decoders from your cable company; supports HD channels)
• Antenna only
  (record 2 shows at once; supports HD channels)
• Digital cable + antenna
  (record 2 shows at once; supports HD channels)
• Basic cable
  (record 2 shows at once; does not support HD or premium channels)
• Basic cable + antenna
  (record 2 shows at once; supports HD channels on antenna only)

Does NOT support:

• Satellite
• Cable with box (replace your cable box with a CableCARD decoder)

TiVo Series2 Dual Tuner DVR

Can be set up to work in any of the following configurations

• Cable without a box
  (record 2 shows at once)
• Cable with a box
  (record one premium channel and one basic channel at once, or two basic channels at once)
• Satellite with a box
  (record only one channel at a time)
• Satellite with a box + cable without a box
  (record one satellite channel and one basic channel at once, or two basic channels at once)

Does NOT support:

• Antenna
• HD channels
• CableCARD decoder