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[8] Avnet Corporation purchased Channel Master in 1967, moving its manufacturing facilities to a former Sylvania television factory in Smithfield, North Carolina. Avnet sold the company in 1998 at a $33 million profit. [9] Channel Master filed for Chapter 11 bankruptcy protection on 2 October 2003 [10] after losing its largest client, EchoStar ...
He also helped found Channel Master, which became a leading producer of television antennas after Resnick invented an antenna which was inexpensive, easy to assemble and install, and did not require the expertise of a specially trained technician.
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.
In 1981, United Video Satellite Group launched the first EPG service in North America, a cable channel known simply as The Electronic Program Guide.It allowed cable systems in the United States and Canada to provide on-screen listings to their subscribers 24 hours a day (displaying programming information up to 90 minutes in advance) on a dedicated cable channel.
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).
For example, if the call letters are WFRC and the station broadcasts on channel 10, then the 10.2 subchannel is identified as EFRC, 10.3 is GFRC, 10.4 is HFRC, 10.5 is IFRC and 10.6 is JFRC. If the call letters are KFRC and the station broadcasts on channel 10, then 10.2 is identified as NFRC, 10.3 is OFRC, 10.4 is QFRC, 10.5 is RFRC and 10.6 ...
The Numerical Electromagnetics Code, or NEC, is a popular antenna modeling computer program for wire and surface antennas. It was originally written in FORTRAN during the 1970s by Gerald Burke and Andrew Poggio of the Lawrence Livermore National Laboratory .
Units supplied to the British Army operate in the 37–46.975 MHz range, voice (FM) transmission Mode and 25 kHz channel separation. A high power (2 Watts) output version was also available and any 10 MHz block in the range 30–76 MHz could be supplied. Worn in a holster on the chest or back. The PRC349 was added to the Clansman family in 1972.