When we think of a spark gap radio transmitter, most of us immediately imagine an early twentieth century ship’s radio room or similar. Most of us know these transmitters as the first radio systems, ...

In 1896, Marconi successfully covered a distance of about 3 km using electromagnetic waves. A little later, he established radio contact across water between Lavernock Point, South Wales and Flat Holm ...

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In many ways, a radio transmitter is a fairly straightforward and basic piece of apparatus. In its simplest form it consists of little more than a source of high-voltage electricity, a connecting ...

Getting back to basics is a great way to teach yourself about a technology. We see it all the time with computers built from NAND gates or even discrete transistors. It’s the same for radio – ...

What is the most important object in Welsh history? Today Professor Iwan Rhys Morus, from Aberystwyth University, argues the case for a radio transmitter In many ways, a radio transmitter is a fairly ...