I often monitor Stockton Delta Amateur Radio Club (SDARC) 2m repeater on my commutes: 147.165 MHz + / PL 107.2Hz in the California Central Valley. This repeater maintained by SDARC, and more info can be found at w6sf.org. It’s located in a nice spot in the Sierra Nevada Mountains at 2500 feet, and has wide coverage of the valley that reaches southern metro Sacramento, all the way down past Modesto.
Sometimes when in the SF Bay Area I go on the Mt. Diablo MDARC 2m repeater W6CX: 147.060 MHz + / PL 100Hz.
When on Digital Mobile Radio (DMR) I check out the NorCal talkgroups or TAC 310 via K6MDD repeater.
I work in the Metro Sacramento area, so I sometimes monitor the close-by KS6HRP 2m repeater on 146.610 MHz – / PL 136.5Hz.
You can also drop me a note via email at: firstname.lastname@example.org.