Dang it, I hate it when I'm wrong...here is the breakdown for radio, on page 4 http://www.current.org/pbpb/statistics/pbpbFY01revenues.pdf ...its in pdf which I can repost here.
Thanks -- fascinating bunch of numbers. Public radio gets a bit more tax money than I thought. Sorting through the tables, it looks like maybe 60% of public radio money is genuinely not from taxes. I was thinking of direct grants to public radio (~23% according to the table on page 3, not counting money from universities).