Lots of us have amateur radio call signs. This weekend is the annual Field Day event. This is where hams set up to prove that we can work anytime anywhere in case of a disaster.
This link will get you to your local site If you've wanted to see ham radio in action, here is your chance. Contest runs from 2PM Saturday to 2PM Sunday EDT (1800 UTC Saturday to 2100 UTC Sunday).
Stop by and check it out!