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Discusses the history of home wireless construction, covering a time period, from before World War I, up to World War II. The topics covered include: the crystal set era; home construction; wireless magazines; equipment; and wireless entert...

The paper summarises many of the important developments that have taken place in the tuning of radio apparatus, starting with the early work of Oliver Lodge and Guigliemo Marconi. Over the years improvements have been made both to tuning ca...

We give a brief overview of the various phenomena which may he observed in the ELF (extremely low frequency: 3 Hz to 3 kHz) spectral region, terrestrial ELF propagation theory, and discuss applications which make use of the unique character...

The author attempts a brief summary of the history of ionospheric fading from sources beyond the upper atmosphere. The first sources used were discrete radio stars. With the advent of satellite transmissions at altitudes varying from 300 km...

Radiowave propagation, progressively studied and understood during the past 100 years, has been exploited to provide an ever-growing range of radiocommunication services. The laboratory demonstrations of the existence of electromagnetic wav...

Antennas are an essential part of every radio system and they have been in use for more than 100 years. The continual growth of radio has steadily increased the types of antennas in use. Hertz used reflector antennas and loops in his classi...

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 ...

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...

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...

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...