Looking for Scanner Freq
I can't provide a frequency but hopefully this will help.
Unfortunately I have had car trouble twice in the last year, both times in the south bay.Rental with no jack, another with two damaged tires.
I called AAA both times. First time I was in Mountain View and got Fortes. The young man was dispatched from Phoenix AAA on a 900 mhz MDT. I do not believe he even had a company radio in the brand new truck. He did state that a former CSAA dispatch manager was setting up a company in Sunnyvale to do the dispatch/call taking for a number of private tow services, but she was not yet on the air. Apparently CSAA has been rebidding service zones, much bigger than their old zones and running a number of firms out of business or severly downsizing. Fortes had been award everything from Santa Clara to Redwood City/Woodside with one of two "back-up" firms in Mountain View remaining. This pushed "Cupertino Tow" (based in Sunnyvale, also Sunnyvale Tow) out of its old CSAA service area. Sounds like all dispatch/communications was on the AAA MDT.
A few months later I made another call in Santa Clara. The CSAA dispatch system was down and they request you call a local service and submit the bill. I call Cupertino tow which was saved on my mobile. He did have a company radio, I think with a VHF antenna. He said they had the East Contra Costa CSAA contract. I believe they were doing dispatch using Nextel mostly as they did not dispatch set up in CoCo. He again said the AAA/CSAA dispatch was on MDT's out of Arizona, there is no CSAA dispatch in California. That driver indicated that the local firms had retained CHP and local city work, along with Freeway Service Patrol. Also that lots of CSAA customers had switched to insurance based services or manufactures services (Mercedes Benz, Lexus, GEICO, etc). I have thought of switching, I have two insurances that have tow programs cheaper than CSAA, one offers 30 days of rental coverage and tow for less than CSAA.
I have been told a number of tow services in the South Bay use one of two answering services and are dispatched using Nextel or shared 800 mhz systems.