So, I've heard it said that when you use a hand-held radio, your body acts as a ground. Let's say I wanted to go on an adventure with my homemade flying machine (lawn chair and weather balloons). Obviously, my friends would like to know how the world looks and feels from that height. I choose to use my hand-held radio to tell them everything. The question is: "Would my hand-held radio still work?" Do I need to ground it to something?