I think I'm a bit confused. Midland T70s and T77s, for example, are "FRS/GMRS" radios, according to the advertising. Neither can be programmed to transmit on a GMRS repeater (as far as I can tell), but can be programmed with tones to receive GMRS repeater traffic. All of their transmissions are simplex. If a person doesn't have a GMRS license they can transmit on these radios because they're FRS. If, the next day, a person acquires a GMRS license, and transmits on the same channels they transmitted on the day before, they have to, now, identify with their call sign? I'm really trying to figure this out.