Garmin RINO 110 Owner's Manual - Page 92
FRS Limitations, GMRS, The use of a GMRS General Mobile Radio Service
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APPENDIX > WHAT IS FRS? Channel scan allows your FRS radio to scan all FRS frequencies for signals. After scanning briefly to see what channels other users are on, simply set your FRS radios to an unused channel and enjoy less interference. FRS Limitations If you are operating in an urban environment or in varying terrain such as canyons or mountains, some features act as obstructions limiting the maximum reception range of your FRS radio. The UHF FRS frequencies are "line of sight," meaning that the signals do not follow the surface of the earth, but instead radiate in a straight line from the transmitting antenna. If there is an obstruction between the transmitting FRS radio and the receiving FRS radio, the signal will not be received. Smaller obstructions, such as trees, cars, and even crowds of people cause some loss of signal, resulting in reduced maximum range. GMRS The use of a GMRS (General Mobile Radio Service) radio requires an FCC license in the U.S. No license is required in Canada to operate on GMRS channels. The operating frequency of GMRS ranges from 462.550 to 462.725 MHz. Refer to the "Frequency Charts" for a complete list of each channel's frequency. 86 Rino® 110 Owner's Manual