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In the 1980s, Channel Master was the only second source for General Instrument (GI)'s Videocipher II module, a building block for satellite television receivers, under a licensing agreement for which Avnet paid GI a million dollars. The Channel Master 4251, a high-performance parabolic UHF television antenna, stood about seven feet in diameter ...
Wometco Home Theater (WHT) was an early pay television service in the New York City area that was owned by Miami-based Wometco Enterprises, which owned several major network affiliates in mid-sized media markets and its flagship WTVJ in Miami (then a CBS affiliate on channel 4, now an NBC owned-and-operated station on channel 6).
Joseph Yale Resnick (July 13, 1924 – October 6, 1969) was an American inventor, World War II veteran and Democratic Congressman, member of the United States House of Representatives from New York (28th congressional district). He served two terms from 1965 to 1969.
The system consists of a master antenna and a matching transformer to match the balanced antenna with unbalanced cable and amplifiers. [5] Most antennas have an impedance of around 300 Ω. To convert it to 75 Ω, a matching transformer (or balun) is used. For trunk line isolation, a resistive inductive device known as a splitter is used.
Most digital video signals are compressed to MPEG-2 and MPEG-4 formats in order to combine multiple video streams into a QAM making the most efficient use of spectrum which a customer cable set top box receives, demodulates, de-encrypts and displays as a virtual channel number that the viewer recognizes. In many cases the same TV network may ...
However, now "virtual channel" (technically known as logical channel number) numbers are common. So, Channel 4 digital signals may now actually be broadcast on channel 43, or any other frequency. When the ATSC tuner does a channel scan, it finds the signal on channel 43, learns that this material is called "Channel 4", and remembers that mapping.