Why did they switch from analog to digital?

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Tags

1. #completely
2. #analog
3. #channels
4. #digital
5. #stations
6. #power
7. #switch
8. #current
9. #commission
10. #cease
11. #signals
12. #their
13. #federal
14. #television
15. #decided
16. #broadcasting
17. #communications
18. #switching