Dan, is it possible you are mistaken? I was thinking Santa Rosa EMS does tone out sometimes, particularly for unit post moves. I've got a few of them logged, but not all of them, from 453.950.
trumpet4
I might be wrong but I have not heard Santa Rosa EMS use tones since Lifeguard EMS took over for Rural Metro last year. Today I went through 2 days of EMS recordings and none of the calls used any kind of tone-outs. In the past I use to hear tone-outs in the evening time when EMS/Fire was dispatched by central dispatch during reduced manning. Sometime I will hear the med units dispatched on FD channel. If I do hear any kinds of tones, I will be sure to pass them out and verify what you posted.
Dan
Note: I just picked up a wavering tone after I posted this but it didn't sound like a normal tone-out. I'll record another 2 days and see what I come up with.