Multi-purpose radio

Details Multi-purpose radio Multi-purpose radio

1978-08-22

1980-09-09

Bookbinder, Marc E.

Telecommunications

Receiver or analog modulated signal frequency converter

Plural receivers

340546, 367 93, 455229, 455350, H04B 116, H04B 1100

Patent

active

042221196

ABSTRACT:
A multi-purpose radio of the AC or battery operated type which includes connections for an auxiliary unit which is an alarm device of the ultrasonic type in which the transducers of the alarm device are mounted on the radio cabinet. The output of the alarm device is applied to the audio frequency amplifier section of the radio.

REFERENCES:
patent: 1965946 (1934-07-01), Pincus et al.
patent: 2950356 (1960-08-01), Stott
patent: 3087990 (1963-04-01), Jacob et al.
patent: 3231852 (1966-01-01), Kritz
patent: 3720937 (1973-03-01), Lang et al.
patent: 3908180 (1975-09-01), Braginsky
patent: 4015237 (1977-03-01), Takatani et al.

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