Check headsupnorcal yahoo site and search the messages for permanente. Might provide some helpful stuff, like what various radio chatter stuff means. I'm not sure which dispatcher the permanente works with but there are feeds for all the bay area up and caltrain dispatchers at railroadradio, could be helpful.

There is also a google earth layer of the bay area tracks with control points and mile posts and stuff. Helpful to look at to understand what one hears over the feed. Maybe someone has a link, I couldn't find it on google sorry.