A spark-gap transmitter is an obsolete type of radio transmitter which generates radio waves by means of an electric spark. Spark-gap transmitters were...

unmodulated spark-gap transmitter. Many radio spark gaps include cooling devices, such as the rotary gap and heat sinks, since the spark gap becomes quite...

in 1895–1897 High power spark gap radiotelegraphy transmitter in Australia around 1910. 1 MW US Navy Poulsen arc transmitter which generated continuous...

ignition device from sparking after the flame is lit or restart the flame if it goes out. A spark-gap transmitter uses an electric spark gap to generate radio...

side of the spark gap was directly connected to the antenna. Receivers with thermionic valves became commonplace before spark-gap transmitters were replaced...

conclusion that he could develop a far more efficient system than the spark-gap transmitter and coherer-receiver combination which had been created by Oliver...

radio transmitter. Trial service was initiated on 9 August 1906, and operational service began on 16 August 1906 using a 25 kW spark gap transmitter designed...

Company in 1904 for use in wireless telegraphy, at that time via spark-gap transmitters, and was adopted internationally at the London 1912 International...

conclusion that he could develop a far more efficient system than the spark-gap transmitter and coherer receiver combination. To this end he worked on developing...

method of radio transmission produced by the first radio transmitters (spark gap transmitters) which consisted of a series of damped radio waves. Information...

Pulse-position modulation (PPM) Wi-Fi Direct Energy harvesting Spark-gap transmitter WiB (digital terrestrial television) USC Viterbi School of Engineering...

Although some applications had used earlier technologies such as the spark gap transmitter and crystal detector for radio or mechanical and electromechanical...

launch system Spark-gap transmitter, a technology used to generate radio waves Spark or Sinthusa, a genus of butterfly Kicksled or spark, a small sled...

process of stopping an electrical arc, for example in a fuse or spark-gap transmitter in an internal combustion engine, the rapid cooling of fuel inside...

tin-plate toy manufacturer Matsudaya Toy Co. who beginning 1957 used a spark-gap transmitter and coherer-based receiver in a range of radio-controlled (RC) toys...

theory, first observed radio waves he generated using a primitive spark-gap transmitter. Experiments by Hertz and physicists Jagadish Chandra Bose, Oliver...

used a dipole antenna consisting of two collinear one-meter wires with a spark gap between their inner ends, and zinc spheres attached to the outer ends...

to send audio signals by radio waves. The first radio transmitters, called spark gap transmitters, transmitted information by wireless telegraphy, using...

were discovered in 1887, the first generation of radio transmitters, the spark gap transmitters, produced strings of damped waves, pulses of radio waves...

rudimentary radio station consisting of a coherer-based receiver and a spark-gap transmitter, also powered by batteries charged from the mill wheel. He strung...

While some applications had used earlier technologies such as the spark gap transmitter for radio or mechanical computers for computing, it was the invention...

radio transmitter is changed, the trap must be adjusted. At its base, the mast should have a lightning arrester consisting of a ball or horn spark gap between...

Morse code via spark-gap transmitters. As vacuum tubes became affordable, operations shifted to more efficient manual telegraphy transmitters, referred to...

early radio transmitters, called spark gap transmitters, which used an electric spark to generate radio waves. In existing transmitters the spark damped the...

debated in the literature. Meanwhile, Braun attempted to replace the spark-gap transmitter, which produced damped oscillations, with AC generators that generated...

operational atop a hill near the town of Fogo; operating with a spark-gap transmitter to establish maritime communications, the station was forced to...

experiment. The transmitting station in Poldhu, Cornwall used a spark-gap transmitter that could produce a signal in the medium frequency range and with...

radio transmitters, used during the initial three decades of radio from 1887 to 1917, a period called the spark era, were spark gap transmitters which...

crystal sets received wireless telegraphy signals broadcast by spark-gap transmitters at frequencies as low as 20 kHz.: 110,268  A crystal radio can be...

5-kilowatt rotary spark-gap transmitter, with the wireless telegraph call sign MGY, and communication was in Morse code. This transmitter was one of the...