The was the Medium Frequency only version of the of the Oceanspan Mk I.

SPECIFICATIONS:

Technology: All valve
Modes: ?
RF Power:
Frequency range: ?
Frequency control: ?
Mains Power input - ?
Weight - ?
Dimensions - ?

Trader photos courtesy Technical Instruction for Marine Radio Officers

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Contributors and Credits:

1) http://www.shipsnostalgia.com/gallery/showphoto.php/photo/352607/title/marconi-trader-mf-transmitter-/cat/530
 
 

Nov 16/21