Detector for use in crystal radio receiver, with mechanical adjustment, circa 1916.

This unit is professionally made and 'is a German pattern detector said to have been used before World War I and afterwards to receive the Braybrook Broadcasting Station (inaugurated 13 October 1924 by Madame Melba).'

Physical Description

The crystal is mounted in a brass cup on a wooden base plate. A brass spring loaded wire holder allows a delicate contact to be made between crystal and wire. Multiple registration numbers physically joined. This object is physically attached to a display board with ST 15415. Note: Crystal is probably galena (Lead Sulphide). Carborundum is unlikely to have been used at this time. It requires a battery to make it operational.

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