You do NOT need a license to transmit on the FRS frequencies, however they are extremely weak and sometimes don't even work more than 1,000 feet away. I used them once in a mall and once my friend went to the other side of the mall, the radios couldn't reach. Regarding GMRS, you need a license (which is an expensive fee to the FCC) and to fill out some very annoying paperwork. My suggestion, just study for the HAM radio written test for your Technician license. Then purchase a couple of reasonable priced 2 meter HAM radios and communicate on simplex or an open repeater not being used.