Who Knew?

Who knew that the federal government made $20 billion off of the mandated switch from analog to digital?

I did not until tonight when Heard it on News Hour with Jim Lehrer. As of now, I have no link to support this, but as the report indicated, the government auctioned off the digital "signals" and "earned" around $20 billion.

I have been wondering the whole time why this was a federal government issue, now I know. . . REVENUE.