Online registration is open for Northeast HamXpostion, taking place in-person at the Best Western Royal Plaza Hotel & Trade Center (181 Boston Post Road, Marlborough) on September 10, 11, and 12 for hobbyists, makers, STEM enthusiasts, school and scout groups, and amateur radio operators from all over New England. Sci-Tech Amateur Radio Society (STARS) and New England Sci-Tech (NEST) in Natick will have booths there, will host a youth forum, and will host various workshops and talks. The cost is $18 for events on all three days, with free admission for full-time students with student IDs.