Patent ID: 6553215
Filing Date: 2003-04-22
Classification: H04B

Abstract:
In a weather radio receiver for receiving weather broadcast signal and weather warning alert signal from a plurality of weather stations and providing an audible warning alert and weather broadcast by an audio output means therein, said receiver having an automatic control system comprising,an auto scan synchronizing circuit means operative continuously for tuning said receiver in a stepping manner through a plurality of predetermined carrier frequencies of said weather stations to search for said weather warning alert signal and weather broadcast signal, a detecting means adapted to segregate said weather alert signal and weather broadcast signal from said carrier frequency signal, a squelch circuit means in combination with said detecting means operative to determine the presence of said weather alert signal and weather broadcast signal, a switching comparator means coupled to said detecting means and said squelch circuit means and adapted to provide an actuation output signal when said weather alert signal and weather broadcast signal are present, a switching means connected to said switching comparator means and operative to be actuated by said actuation output signal from said switching comparator means for connecting said weather alert signal and weather broadcast signal to said audio output means for announcing said weather alert and weather broadcast, an auto lock circuit means coupled to said frequency stepping circuit means and said squelch circuit means and operative to lock said auto scan synchronizing circuit means at a weather station presently broadcasting said weather warning alert and said weather broadcast.