KCSN-fm 88.5-has several shows that might qualify. Two unfortunates in this regard; one show airs at the the same time as the KPFK shows, and the signal is difficult to get south and east of the San Fernando Valley owing to a conflict on that frequency from Orange County. But they are on the web at www.kcsn.org. All times Pacific.

Saturday 6a-10a - Bluegrass Express
         10a-1p - Twang    Classic western and country
         (the show programs best with 'guest' hosts IMHO)
Sunday   6a-10a - Bluegrass, Etc.   Love the 'etc'! Good mix of
         ol-timey, mountain, and some cowboy western, but the
         emphasis on BG.
         4p-7p   - Tangled roots   Haven't heard it much yet

Also on Sunday night at 10pm, on am870, is Sunday Night Folk. Plays mostly old 'folk scare' era tunes, but with no context.

It's pretty pathetic pickings for an area as large as Los Angeles, sez I. I remember the days of Les Claypool, Skip Weshner, Ed Cray and John Davis. Oh well.----John