What is GMRS? What do the letters stand for and what kind of performance should a GMRS offer in a survival or emergency situation? GMRS stands for the General Mobile Radio Service. The General Mobile Radio Service radio equipment operates within the range of 462 Mhz to 467 Mhz. GMRS is uusally used for short-distances using two-way communications that generally take place on small hand-held communications devices. In some circles these devices are called, walkie-talkies, handi-talkies or HT's in the amateur radio community. GMRS is associated with other communications services such as the FRS, (Family Radio Service and also MURS, Multi-Use Radio Service.