A hundred years ago this month, the December 1923 issue of the British journal Wireless Weekly showed how to build this two-tube regenerative receiver. The exact frequency/wave length coverage is not stated (quite likely because the author didn’t really know for sure), but it was designed to receive long wave radiotelephone and radiotelegraph signals, as well as BBC broadcasts. So presumably, it covered the long waves and the medium waves.

It was said to pull in all of the BBC broadcasts with good volume.

The circuit isn’t all that different from similar receivers from subsequent decades. So it would be a good performer, even today. The picture above is somewhat deceptive, as it doesn’t show the components below the chassis. It is designed to be mounted in a a box about 3 inches deep, which is shown in the article.