So far, the government hasn't spent a penny of taxpayer money on converter boxes through the CECB program.
A History of the TV Converter Box Coupon Program
In 1996, after years of studies by government/television industry committees, U.S. Congress deemed Digital Television as an acceptable upgrade to the 50-year-old analog television broadcasting technology.
At that time, Congress authorized the distribution of an additional broadcast channel (for digital broadcasting) to each broadcast TV station which would allow for broadcasting in both analog and digital channels simultaneously.
In 1997, the U.S. government mandated that all public TV stations were to begin broadcasting digital signals by May 1st, 2003, giving stations almost 6 years to comply. More than half of the countrys 357 public TV stations missed the deadline. (Source: Current.org).
It wasnt until The Deficit Reduction Act of 2005 (Approved by Congress and President Bush), that a final date of February 17, 2009, was set for all TV broadcasters nationwide to make a complete transition to digital television and switch off their analog broadcasts.
The Deficit Reduction Act of 2005 allocated $1.5 billion to the TV Converter Box Coupon Program as a subsidy to consumers to help purchase up to two DTV converter boxes. The converter box would allow most existing analog television sets to continue to receive broadcast TV signals after the transition occurred on February 17th, 2009.
Additional contingencys for allocation of funds to the coupon program were included if the original funds were exhausted.
And then there is this:
http://www.ntia.doc.gov/otiahome/dtv/comments/dtvcoupon_comment0079.htm The NTIA calls them "Federally subsidized and taxpayer-supported digital converter boxes."