Browse Conferences

Receiver and transmitter development in Germany 1920-1945
In the early 1920s quartz as a frequency controlling device was slowly becoming more and more important. Already in the mid twenties the Germans relied on quartz, mainly as a secondary standard. Although Hans Vogt invented low-loss HF iron ...
A re-appraisal of the Goldschmidt generator
The early wireless telegraphy transmitters were based on the generation of trains of high frequency oscillations produced by sparks. In the Goldschmidt alternator, an ingenious combination of a standard machine plus external static componen...
The Alexanderson alternator, a "near perfect" system of W/T transmission
In 1903, Steinmetz built a 1 kW 10 kHz alternator which was used by Fessenden in experiments with wireless telephony, and in 1904 he placed an order with the General Electric Company (USA) to design and build an alternator capable of operat...
HF transmitters and receivers for naval radio
When considering the history of 100 years of radio it should be remembered that some of the first applications were aboard naval vessels. The Marconi Company has been involved with naval communications systems for nearly a century since the...
Improved communications at sea: a need and a new technology
The world's first radio company was registered in Britain in 1897. Many people then expected that conventional line telegraphs, with their costly paraphernalia of wires, posts and submarine cables, would soon be obsolete. But in practice, f...
Dawn in radio technology in Japan
The history of telecommunications in Japan is traced back to 1854. The public telegraphic service was inaugurated in 1869 between Tokyo and Yokohama just after the birth of Meiji government. Since the establishment of communication networks...
Wireless in the Boer War
The Boer War in South Africa (1899-1902) was the first occasion in which wireless communications were used in a military conflict. The paper traces the history from the point of view of both the British and the Boer forces: both of whom had...
Fessenden and Marconi: their differing technologies and transatlantic experiments during the first decade of this century
Discusses the origin of transatlantic radio communication in the LF band. The paper considers the differing antenna, transmitter and receiver technology available. The first transatlantic experiment is then described in detail. the author g...
Wide-band high frequency signals from Poldhu? The propagating spectrum and terminal equipment revisited
In 1901 Marconi attempted to transmit radio signals across the Atlantic Ocean. The most powerful spark transmitter ever built was operated at Poldhu in Cornwall. While on Signal Hill in St. John's, Newfoundland, at about midday, Marconi lis...
Marconi's Irish connections recalled
The author discusses the life of Marconi from 1894 in Bologna, Italy, through his first commercial break in 1898 in Ireland to the commencement of broadcasting in 1923. His work at Crookhaven, Clifden and Letterfrack are considered.