Frequency Range: ?
Power output: ?
Typical range: 50 miles from shore.
Circa 1923

The purpose of this set is  to connect ships that are within a short distance of shore to the British Post Office telephone network.at Southampton.

Duplex Wireless Telephone set. . (Courtesy Marconi International Marine Communications Company Ltd)

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Contributors and Credits:

1)  Lewis Bodkin  <05bodkin555(at)gmail.com>
2) A booklet in the Gerstein Library of the University of Toronto

Jun 28/19