Wireless Equipment, Transmitter Wilson 130 Watt Spark Trench Type, British
Dark grey painted wooden box, with painted fabric cover hinged lid, fold down front panel and brass fittings. White plate with engraved black writing, WILSON 130 WATT TRANSMITETR LONG WAVE PATENT No 13755 OF 1913 PATENT APPLIED FOR No 19506 OF 1914, affixed to top of lid by two screws. Circuit diagram and instructions on paper sheet WILSON 130 WATT TRANSMITTER (LONG WAVE) pinned to inside of lid. Brown fascia panel in lower section with attached ammeter, rheostat marked AERIAL TUNER, Morse Code key, hinged bridge switch with SEND and RECEIVE options and terminal connectors marked EARTH, BATTERY, AERIAL and RECEIVING. Manufacturing marked W/T FACTORY W.D. SOHO.W. Front flap folds down to reveal battery box compartment and cable connectors, with wooden, sliding lid spares box.
This set is suitable for use with single wire aerials frm 50 to 100 yards in length. It is arranged for transmitting on eitehr 350, 450 or 550 metres wavelength. To alter wavelength unscrew front of box and move lead on to terminal marked with wave desired. A receiving set is to be connected to the 2 terminals indicated.