Funding of and by the corporation

The CPB's annual budget is composed almost entirely of an annual appropriation from Congress plus interest on those funds. Ninety-five percent (95%) of CPB's appropriation goes directly to content development, community services, and other local station and system needs.[5]

For fiscal year 2014, its appropriation was US$445.5 million, including $.5M in interest earned. The distribution of these funds was as follows:[6]

$222.78M for direct grants to local public television stations;
$74.63M for television programming grants;
$69.31M for direct grants to local public radio stations;
$26.67M for PBS support;
$22.84M for grants for radio programming and national program production and acquisition;
$22.25M for CPB administrative costs;
$7.00M for the Radio Program Fund.

Public broadcasting stations are funded by a combination of private donations from listeners and viewers, foundations and corporations. Funding for public television comes in roughly equal parts from government (at all levels) and the private sector. [7]

Stations that receive CPB funds must meet certain requirements,[8] such as the maintenance or provision of open meetings, open financial records, a community advisory board, equal employment opportunity, and lists of donors and political activities.

https://en.wikipedia.org/wiki/Corporation_for_Public_Broadcasting#Funding_of_and_by_the_corporation