Define Wireless devices. Wireless devices synonyms, Wireless devices pronunciation, Wireless devices translation, English dictionary definition of Wireless devices. adj. 1. Having no wires. 2. Of or relating to communication by transmitting electromagnet
wireless telegraph, wireless telegraphy, radiotelegraph, radiotelegraphy - the use of radio to send telegraphic messages (usually by Morse code) radio transmitter - transmitter that is the part of a radio system that transmits signals Adj. 1. wireless - having no wires; "a wireless security sys...
A station discriminator (64) that discriminates the transmitting station that is transmitting the Morse code being received by determining whether or not it matches the transmission frequency of a known station, and a character that notifies the result of determining the transmitting station. It ...
ACCORDING to a report in The Times of April 20, a new instrument for wireless telegraphy, which will either handle the morse code or transmit and receive messages in plain letters, has recently been produced by Messrs. Siemens and Halske of Germany, and is being demonstrated at the London ...
It is the point where the transmitter connects to the antenna and provides the RF current that the antenna radiates. Resonant Frequency It is the frequency at which the antenna’s reactive impedance is zero, making it purely resistive.
The distance between transmitter and receiver was gradually increased first to 300 yards (275 metres), then to two miles (three kilometres), then across the English Channel. Finally, in 1901, Marconi bridged the Atlantic when the letter s in Morse code travelled from Poldhu, Cornwall, to St...
On 12 December 1901 signals from a high power spark transmitter located at Poldhu, Cornwall, were reported to have been heard by Marconi and his assistant George Kemp at a receiving site on Signal Hill near St. John's, Newfoundland. For this reception experiment, Marconi used a kite supported...
Morse Register image: predecessor of the telegraph sounder, circa 1844. The Harmonic Telegraph, 1881: The Yetman Transmitter: telegraph or typewriter? The Railroads and The Telegraph: an historical account of their maturation together. Image of the Morse / Vail key: Used on the Washington to Balt...
cement slab was used as a base for each tower. The aerial rigging among the towers was a conical arrangement of 200 wires converging in midair just above the transmitter house and feeding in through a single wire. A similar tower configuration was already in operation at Poldhu and Glace ...
The system is built on the TCP/IP internet protocol. The working distance between transmitter and receiver can be be up to 25 meters with the current setup. The team adds that improvements in the technology could increase the range of their system considerably making it much more useful. ...