Paul Godley's Super heterodyne receiver.

During 1921-22 a series of transatlantic tests was conducted by US and European radio amateurs.
The US amateurs was sending to Europe on specific wave lengths around 200 meters to see if radio waves could cross the Atlantic. The first test was held February 2, 4 and 6 1921 and was a disappointment, because no one heard the US amateurs. The next test commenced on December 8 and finished December 17, 1921. To make sure the best receiving equipment was used, the US amateurs sent Paul Godley, 2ZE to Europe bringing a Paragon regenerative receiver and a Armstrong superhet. He established a listening post in a field just outside Ardossan, not far from Glasgow in Scotland. At 0050 UTC on December 9 he received correctly station 1BCG located in Greenwich, Connecticut. The wavelength was 230 meters.

I bring here the schematic diagram of the Armstrong superhet used by Paul Godley. If you click on the picture it will be enlarged  in a new window. (From the book "Amateur Radio" by Maurice J. Grainger, 1922).

Map showing stations in the United States received by Paul Godley, at Ardossan, Scotland.
(from the book "Amateur Radio" by Maurice J. Grainger, 1922).

Index

Next page