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Aircraft Wireless Telephone Transmitter Type AD1, by Marconi Company, England, 1921
Inventory Number: 81229
Number of documents: 2
Document Type: Miscellaneous Note
Document Heading: Technical Details
Text:
This unit was designed for the transmission of telephonic speech from aircraft to other aircraft or to ground stations. The unit could be used for telegraphic transmission by the movement of a switch mounted on the unit which carries a morse key.
Document Type: Miscellaneous Note
Document Heading: Historical Background
Text:
The Aircraft Wireless Telephone Transmitter Type AD1 was introduced in 1919, and in January of the following year, 1920, it was first used on a De Havilland DH16 aircraft.
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