Tuned Field Transmitter, by Marconi Company, England, 1907
Inventory Number: 87142
Maker Details: Attributed to Marconi's Wireless Telegraph Co. Ltd.
Size: 415 x 380 x 250 mm
Materials: Brass, mahogany, glass, ebonite.
Other Given Number(s): Christie's 41, Science Museum Loan 1924-493, 788/2 (white tag).
Tuned Field Transmitter, with brass spark gap and tuned circuit on mahogany and ebonite flat case containing sixteen (of eighteen) horizontal Leyden jars. It was tuned by a bank of Leyden-jar capacitors and was driven by an induction coil on which the Morse key was mounted. Previously catalogued with Induction Coil (Inv. Num. 30667).