I attended BayCon 2019 this past weekend. This is a free one day Amateur Radio event consisting of interesting 30 minute or so presentations, a nice free table and a fundraiser for the BayNet repeater club that puts the day on.
Some good talks including one on SOTA, solar power, digital radio, a history of Silicon Valley and a tour of Cisco’s emergency communications team and truck.
N2TIQ's radio blog 