The Clay Center Amateur Radio Club — a public outreach STEM program of the Dexter Southfield school — will host the Amateur Radio Relay League (ARRL), Field Day on June 24 (3-6PM) and June 25 (9AM-Noon) at the Clay Center Observatory, on the Dexter Southfield campus (20 Newton Street in Brookline; 5th floor).  The ARRL Field Day is the most popular on-the-air operating event in Amateur Radio, involving tens of thousands of amateur radio operators from across the country and lots of public demonstrations.  It’s free and open to the public, and you do not need a radio license to participate. If you’re bringing a group of more than five people, please email Bob Phinney to let him know.