In 1947, Raytheon built the "Radarange", the first commercially available microwave oven. It was almost 1.8 metres (5 ft 11 in) tall, weighed 340 kilograms (750 lb) and cost about US$5,000 ($52,809 in today's dollars) each. It consumed 3 kilowatts, about three times as much as today's microwave ovens, and was water-cooled. In 1961, an early Radarange was installed (and remains) in the galley of the nuclear-powered passenger/cargo ship NS Savannah.
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