applications -pg电子麻将胡了

family radio service (frs) is an improved walkie talkie fm radio system authorized in the united states since 1996. this personal radio service uses channelized frequencies in the ultra high frequency (uhf) band. devices operating in the frs band must be authorized under part 95 subpart b "family radio service" (sections 95.191 through 95.194) of the fcc rules. the authorized bandwidth of frs channels is 12.5 khz and the center frequency separation between channels is 25 khz.