Marconi transmitting key, used for morse communication by radio. Made by Marconi, circa 1902.
Original Museum card states: 'used to demonstrate radio communication across Bass Strait 1905'.
This key might have been directly connected to the the keying relay (ST 15473) and the spark discharger (ST15463). The associated receiving setup may well have included the magentic detector (ST 15464), the telephone condenser (ST 15469) and the multiple tuner (ST 15459).
Brass morse key mounted on varnished wooden base with two brass terminals at end away from key and a brass knife switch in series with the fixed contact of the tapper. Underneath wooden cover missing. The swinging contact has a coil spring return.
On key end of base: MARCONI'S WIRELESS TELEGRAPH Co. Ltd. 354
Type of item
150 mm (Length), 290 mm (Width), 85 mm (Height)