11.   Then the broadcasters would switch off the analog channel and return that license to the government.

12.   Then, the government would auction off the analog channels.

13.   There are also audio excerpts from radio shows that are available on both analog channels.

14.   Under that plan, the government would give the broadcasters licenses for new digital channels and let them keep their analog channels for a seven-year transition period.

15.   When broadcasters complete the transition to digital, the law now says they must return their old analog channels over which they broadcast free now.

16.   A proposed fee for analog channels has been included in Clinton administration budgets but has not been enacted.

17.   Broadcasters already have obligations in return for using analog channels.

18.   Currently, cable operators are legally obligated to carry analog broadcast TV channels in their cable lineups.

19.   Digital technology offers improved picture and sound over existing analog channels and gives stations the ability to offer more channels and services in existing airwave space.

20.   The companies are testing to make sure they can add the digital signal to the existing analog channel without causing interference.