SBCoFD

[Mrzlx]

I’ll be in silverwood in the morning what frequency would be good to listen to

 

[Randyk4661]

San Bernardino County Trunking System, Various, Multi-State

San Bernardino County Trunking System Profile

www.radioreference.com

My guess would be the "Mountain simulcast" site for frequencies. it has the best coverage area.
The dispatch talkgroups can be found on most of the various other sites, I do believe.
The individual area talkgroups, I'm not so sure if all sites carry them or not. Silverwood Lake is in Divisions 3 & 5
You will be safe with the mountain site.
If you are coming from out of state from the east. One of the other site locations will need to be programmed first