Repeater Surprises The repeater might spontaneously identify (it has its own call letters). Some use voice, some use Morse code.
{"Image DocumentName": "Repeater SurprisesThe repeater might spontaneously identify (it has its own call letters). Some use voice, some use Morse code.", "Image ImageDescription": "Some announce the time on the hour. Most repeaters have a timeout timer. Turns off the transmitter after three minutes (typical) continuous transmission \u2013 an FCC requirement. Longwinded talkers. Stuck microphone switches. Microphones dropped down between the car seats. The courtesy tone (beep) indicates that the timer has reset and the transmitter is back in service. The expected effective range of a 500 milliwatt FRS radio on the UHF band in typical urban terrain is less than a mile, or six vertical floors. Licensed GMRS portables are authorized up to 5 watts of transmitter output, ten times the power of an FRS radio. This enables reliable communication for several miles and more than ten vertical floors. Licensed GMRS mobile radios may not exceed 5 watts transmitter power on the seven simplex channels which are shared with the FRS, but they may use more efficient external antennas. When used on designated split repeater frequencies, GMRS mobile radios are authorized up to 50 watts, 100 times the power of an FRS radio, enabling wide-area coverage by using established repeater networks.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}