GMRS allows removable/external antennas. FRS does not. FCC Part 95 certification for GMRS, FRS and MURS radios includes far more than just the antenna type and transmit power. Tom ND5Y On 5/12/20 10:56 AM, Jean-Paul Louis via chirp_users wrote: > I thought that FRS/GMRS equipment MUST HAVE fixed antennas.