NorthBay Amateur Radio Association
- NorthBay Amateur Radio Association (NBARA), operates in Vallejo, Califronia, at the northern tip of San Francisco Bay. The NBARA is an association that supports and promotes amateur radio in and around the Vallejo and NorthBay Area.
K6MDD Mt Diablo D-Star
- Mt. Diablo D-Star System is situated on the North peak of Mt. Diablo in California's East Bay 33 miles east of San Fransisco. At 3,600' the K6MDD System has excellent coverage of most of the Bay area !