K7AQ (since 1987)
Maidenhead grid

CM87sr

507 active licensees across 5 ZIP codes centered in this square. Each dot is a ZIP code, sized by licensee count.

ZIP codes

ZIPCityHams
94131San Francisco, CA132
94116San Francisco, CA131
94112San Francisco, CA116
94127San Francisco, CA78
94132San Francisco, CA50