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A General Electric MASTR II remote control and desk microphone. Remote controls are used any time a two-way radio base station is located away from the desk or office where communication originates. For example, a dispatch center for taxicabs may have an office downtown but have a base station on a distant mountain top.
The cassette deck was either a top-loading unit beside the turntable or a front-loading unit mounted on a deeper front panel. [4] "Midi" system, circa 1980s. Quadraphonic sound was released in 1970 and never gained much popularity. It was a four-channel reproduction system, which is considered to be the origin of surround sound.
The KLH Model Eight FM table radio, circa 1960. A table radio is a small, self-contained radio receiver used as an entertainment device. Most such receivers are limited to radio functions, though some have compact disc or audio cassette players and clock radio functions built in; some models also include shortwave or satellite radio functionality.
They were joined in 1921 by Eugene F. McDonald, [4] and Zenith Radio Company was incorporated in 1923. The fledgling company soon became known for its high-quality radios and electronic innovations. Zenith introduced the first portable radio in 1924, [4] [5] the first mass-produced AC radio in 1926, [5] and push-button tuning in 1927. [4]
Digital Central Office, a time-division switch similar to DMS-10. The Stromberg-Carlson digital central office was the first Class-5 digital local office switching system installed in the U.S. Stromberg-Carlson put their switch (lab-prototype)into service in July 1977 in Richmond Hill, Georgia. This switch was SC's "REA FIELD TRIAL" office, but ...
The manufacture, importation, sale or offer for sale of jamming equipment violates Section 302(b) of the Communications Act of 1934, the FCC says. An FCC representative confirmed Friday that the ...