The Early Television Museum is a museum of early television receiver sets. This was the first working example of a fully electronic television receiver. The power MOSFET was later widely adopted for television receiver circuits. Commonly this type of tubes are used in radio and television receiver. One example of this operation is selecting a channel on a television receiver. The film features actors viewing a combined radiogram television receiver made by Alba in 1948. Therefore addresses with more than one television receiver generally only required a single licence. Lower noise can be very important when designing a radio or television receiver. These mechanical systems were simple enough that a hobbyist could construct a television receiver. Early satellite television receiver systems were largely constructed by hobbyists and engineers. Forty percent of Antananarivo residents own a television receiver. Patent 4232374 titled "Segment Ordering for Television Receiver Control Unit" describes the VideoBrain display hardware. This IF is carried into the building to the television receiver on a coaxial cable. The company then developed a portable tape recorder and The Grundig Television Receiver 210. In 1976 he made "This is a Television Receiver", transmitted by BBC television.