• Country
• Great Britain (UK)

• Manufacturer / Brand
• Sterling Telephone & Electric Co. Ltd.; London

• Year
• 1916

• Category
• Commercial Transmitter (TX not Transceiver)

• Radiomuseum.org ID
• 276046

Click on the schematic thumbnail to request the schematic as a free document.

• Main principle
• Transmitter

• Wave bands
• Wave Bands given in the notes.

• Power type and voltage
• Powered by external power supply or a main unit.

• Loudspeaker
• - - No sound reproduction output.

• from Radiomuseum.org
• Model: Sterling Type 55A Transmitter - Sterling Telephone & Electric

• Notes

• The Sterling 55A was the most powerful spark transmitter used in WW1 and was used on long range patrol aircraft and night bombers used on long range patrol aircraft.

  The input to the spark transmitter was from a 2kW alternator which could alternatively feed the transmitter or a searchlight. See the schematic. The exciter, alternator and synchronised spark gap were all on the same shaft driven though gearing from the engine of the aircraft.

  The wavelength could be set between 150 to 600 metres by plug connections on a closed circuit inductance. The working range was 500km

• Net weight (2.2 lb = 1 kg)
• 45 kg / 99 lb 1.9 oz (99.119 lb)

• Mentioned in
• HRSA Radiowaves, No. 23 January 1988

• Author
• Model page created by Gary Cowans. See "Data change" for further contributors.

• Other Models

• Here you find 39 models, 33 with images and 6 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Sterling Telephone & Electric Co. Ltd.; London