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EF Johnson Technologies, Inc. is a two-way radio manufacturer founded by its namesake, Edgar Frederick Johnson, in Waseca, Minnesota, United States in 1923. [1] Today it is a wholly owned subsidiary of JVCKenwood of Yokohama, Japan. EF Johnson Technologies offers a wide range of equipment for use by law enforcement, firefighters, EMS, and military.
Vintage operating activity is not limited to the AM mode. Many devotees use their "classic" amateur gear from vintage-era American manufacturers like Eico, EF Johnson, National, Heathkit, Hammarlund, Drake, Collins, WRL, Swan, Signal/One, Lafayette and Hallicrafters, to make radiotelegraphy (CW), SSB, FM and RTTY two-way contacts. [20] [21]
A front panel was used on early electronic computers to display and allow the alteration of the state of the machine's internal registers and memory. The front panel usually consisted of arrays of indicator lamps , digit [ a ] and symbol displays, toggle switches , dials, and push buttons mounted on a sheet metal face plate.
A transmission control unit (TCU), also known as a transmission control module (TCM), or a gearbox control unit (GCU), is a type of automotive ECU that is used to control electronic automatic transmissions. Similar systems are used in conjunction with various semi-automatic transmissions, purely for clutch automation and actuation.
The first elected female head of state in Africa was Ellen Johnson Sirleaf, who became president of Liberia in 2006. In 2021, Tunisia became the first Arab country to be governed by a woman, when ...
The VCO designs of the time still left something to be desired in terms of tuning stability. [2] Whilst this was an issue for monophonic synthesizers, the limited number of oscillators (typically 3 or fewer) meant that keeping instruments tuned was a manageable task, often performed using dedicated front panel controls.
In the wake of his November victory, President-elect Donald Trump has already had a fairly messy rollout of his Cabinet nominees. Republicans hold a 53-to-47 majority in the next Senate, so if the ...
General Motors provided a fix for "Noise #1" but stated that "Noise #2" was a characteristic of any car equipped with a manual transmission and that a similar noise could be repeated by lugging the engine. The remedy for "Noise #1" was to overfill the transmission with Saturn Manual Transmission Lubricant from the stock 1.8 quarts to 2.6 quarts.