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Radio repeater. A radio repeater is a combination of a radio receiver and a radio transmitter that receives a signal and retransmits it, so that two-way radio signals can cover longer distances. A repeater sited at a high elevation can allow two mobile stations, otherwise out of line-of-sight propagation range of each other, to communicate. [1]
Repeating firearm. A repeating firearm or repeater is any firearm (either a handgun or long gun) that is capable of being fired repeatedly before having to be manually reloaded with new ammunition from the magazine. Unlike single-shot firearms, which can only hold and fire a single round of ammunition, a repeating firearm can store multiple ...
WWVB is a time signal radio station near Fort Collins, Colorado and is operated by the National Institute of Standards and Technology (NIST). [1] Most radio-controlled clocks in North America [2] use WWVB's transmissions to set the correct time. The normal signal transmitted from WWVB is 70 kW ERP and uses a 60 kHz carrier wave yielding a ...
The Kalthoff repeater was a type of repeating firearm that was designed by members of the Kalthoff family around 1630, [1] and became the first repeating firearm to be brought into military service. [2] At least nineteen gunsmiths are known to have made weapons following the Kalthoff design. [2] Some early Kalthoff guns were wheellocks, [3][4 ...
The Evans repeating rifle is often considered to be one of the oddest rifles to ever be produced in the United States. The Evans was invented by Warren R. Evans, a dentist from Thomaston, Maine. With the help of his brother George, they perfected the rifle and started the "Evans Rifle Manufacturing Company" of Mechanic Falls, Maine in 1873.
The Winchester Model 1903 was designed by T.C. Johnson, who had joined Winchester in 1885 and had become nationally known as an inventor of successful rifles. It was first chambered for the .22 Winchester Automatic cartridge. In 1919, the Model 1903 moniker was shortened to Model 03, and following a partial redesign in the 1930s, was renamed ...
Coaxial cavity RF filter at 2 meter repeater. An amateur radio repeater is an electronic device that receives a weak or low-level amateur radio signal and retransmits it at a higher level or higher power, so that the signal can cover longer distances without degradation. Many repeaters are located on hilltops or on tall buildings as the higher ...
United States Army Signal Corps. The United States Army Signal Corps (USASC) is a branch of the United States Army that creates and manages communications and information systems for the command and control of combined arms forces. It was established in 1860, the brainchild of Major Albert J. Myer, and had an important role in the American ...