General Research of Electronics, Inc.

Nobuharu Tomita

A scanning radio receiver of triple conversion superheterodyne tuning, having a CPU and a keyboard. The CPU has a programmable memory to store frequencies received by the scanning radio receiver. A first and second frequency mixer for frequency converting a radio wave signal, with a respective local frequency, providing for a first and second IF signal, respectively. A PLL frequency synthesizer for generating the respective local frequencies, depending upon the frequency of the desired radio wave signal to be received, the frequency of which is keyed into the keyboard. A third frequency mixer for frequency converting the second IF signal with a third local frequency. An FM demodulator for reproducing an FM audio signal. An AM detector for reproducing an AM audio signal. An AM/FM switch for receiving the FM and AM audio signals and providing a selective audio signal in response to instruction from the CPU.

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Tokyo, Japan

Nobuharu Tomita