From HacDC Wiki
HacDC offers a few test sessions throughout the year in order to help people get their amateur radio licenses.
To learn more or to preregister (not required, but encouraged), email Justin at email@example.com.
There is no fee to take a licensing exam at HacDC.
2014 test dates:
Exams start at 12:30 p.m., but please arrive by noon to ensure all of your registration paperwork is completed properly.