There are three repeaters on 146.625 all minus offsets. We call them Tone One, Tone Two, and Tone Three. Tone One is located on Wolf Mountain in Grass Valley, CA and uses a PL of 151.4. The courtesy tone has a single beep. Tone Two is located on Bald Mountain near Georgetown, CA and uses a PL of 123. The courtesy tone uses a double beep. Tone Three is located on Mt Vaca near Vacaville, CA. and uses a PL of 100.  The courtesy tone uses a triple beep. It is very easy to tell which repeater is in use by the courtesy tone beep from the repeater ( single beep, double beep, or triple beep). This makes it easy to match the repeater that is in use, so you can talk to the other user on the same repeater.