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Hartford spent time to straighten these matters and compiled the "1967-1969 Most Often Needed Radio Diagram and Servicing Information" book. [ 6 ] Supreme would stop publishing by the early 1970s. One reason was the declining need for repairing consumer electronics due to the increased reliability and the low cost of electronics (cost less to ...
Ericsson Radio Systems AB was the name of a wholly owned subsidiary in the Ericsson sphere, founded on 1 January 1983 by buying out all former owners of Svenska Radioaktiebolaget (SRA). The company was well known in Scandinavia and elsewhere in the 1980s, as it was deploying NMT systems and developing a line of mobile telephones under the brand ...
A signal strength and readability report is a standardized format for reporting the strength of the radio signal and the readability (quality) of the radiotelephone (voice) or radiotelegraph (Morse code) signal transmitted by another station as received at the reporting station's location and by their radio station equipment. These report ...
English: Block diagram of a tuned radio frequency (TRF) receiver, a type of radio receiver circuit invented in 1916 by Ernst Alexanderson and widely used in the vacuum tube receivers of the 1920s.
The first digital voice mode developed for EDACS was GE's Voice Guard, utilizing sub-band coding for its datastream at a rate of 9600 bps. Voice quality was not great, however, with it quickly being replaced by AEGIS. AEGIS was the second generation EDACS digital voice mode, made once again by GE, with Adaptive Multiband Encoding as its coding ...
Ericsson telephone on a Kalahari-Farm in Namibia. Ericsson Telephones Limited [1] (ETL) was a British telephone equipment manufacturer based in Beeston, Nottinghamshire.. The company was founded as British L. M. Ericsson Manufacturing Co. Ltd. in 1903 as a joint-venture between the National Telephone Company (NTC) and L. M. Ericsson of Sweden (Telefonaktiebolaget L. M. Ericsson).
Manual service is telephone service in which a human telephone operator routes calls as instructed by a subscriber with a telephone set that does not have a dial. Dial service is when an exchange routes calls by interpreting subscriber-dialed digits. A telephone switch is the switching equipment of an exchange.
The GE-215 (1963) [3] [8] was a scaled-down version of the GE-225, including only six I/O channels and only 4 kilowords or 8 kilowords of core. The GE-205 (1964). [2] The GE-235 (1964) [3] was a re-implementation of the GE-225 with three times faster memory than the original. [9] The GE-235 consisted of several major components and options ...
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