English High-power spark-gap transmitter at the Navy Yard, Washington DC....
English Guglielmo Marconi's spark gap transmitter circuit from 1900 patent...
consisting of two brass rods with spark gap between them 58 17 133 65 594 241 Battery box English Replica of Hertz's spark radio transmitter and receiver...
org/publicdomain/mark/1.0/PDMCreative Commons Public Domain Mark 1.0falsefalse English Microwave experimental apparatus built by Augusto Righi 1894...
DescriptionHertz drawing of his spark transmitter 1888.png English: Diagram by Heinrich Hertz of his spark oscillator, the first radio transmitter, with...
between 1894 and 1897. The drawing is from his 1897 paper. It consists of a spark-gap transmitter (left) which generated 12 - 60 GHz microwaves, a receiver...
demonstrated standing waves along a narrow coil of wire, generated by a spark-gap transmitter Date 1903 Source Popular Science Monthly Volume 63 Author...
Square wire B and circle wire C are receiving circuits. They both have spark-gaps. Hertz adjusted them to be in resonance state with the EM wave generator...
refraction.png English: Diagram of experiment performed by Heinrich Hertz in 1888 demonstrating refraction of radio waves. At left is Hertz's spark-gap transmitter...
Lodge, and Augusto Righi. A spark gap transmitter A, consisting of a dipole antenna made of two brass rods with a spark gap between them inside an open...
