The Bo-Man 
Self-styled bluegrass shock jock offers playlists, chat forum, links, and broadcast outlets by state.
http://www.theboman.com/Bluegrass Radio Network 
Home of weekly program called "Into the Blue." Playlists, affiliates and broadcast schedules, advertising and links.
http://bluegrassradio.com/
XM 14 - Bluegrass Junction 
Bluegrass and newgrass broadcast via satellite to the continental US. List of typical cuts, program schedule, song request form.
http://www.xmradio.com/programming/channel_page.jsp?ch=14
Music of the Mountains 
Weekly program hosted by fiddler Joe Dobbs on West Virginia public radio since 1983. Archived audio.
http://www.fretnfiddle.com/joe/pages/radio.htm
SIRIUS Satellite Radio: Bluegrass 
Commercial-free music around the clock across the US. Artist list, song request form.
http://www.sirius.com/Bluegrass
Worldwide Bluegrass 
Offers 24/7 streaming bluegrass music via the Internet and features live shows, interviews, album reviews, news, festivals announcements, forum, chat room, artist and industry links.
http://www.worldwidebluegrass.com