Selective call radio communication receiver

Abstract From the Canadian patent

Disclosed is a paging or like radio communication receiver having an oscillator circuit which is connected directly with a power source and is thus held continuously in oscillation at its preset level of frequency irrespective of whether the switch for the power supply circuit is closed or not. The novel power supply system enables the receiver to produce a call sound at any time which is quite normal in quality even at the instant of starting and substantially extends the service life of the battery.