Marconiphone II (M2) Receiver


Type: 1 tube regenerative set. Requires external (LF) audio amplifier which uses 2 tubes..
Frequency Range:  Broadcast band
Circa: 1924
Original cost: $95
Cabinet style: Tabletop

MII schematic here

The "A" battery has external posts but the "B" battery would probably be inside the cabinet. 
All photos in this table via E-bay

Interior view of Marconiphone II audio amplifier.
Interior view of the Marconiphone II detector. The blank space at the bottom of the photo was likely for the 'B' battery. 
(All photos in this table by Lewis Bodkin) 

THe M2 tuner with matching model LF audio amplifier. (Photo courtesy Canada Science and Technology Museum) 
This M2 example is fitted with a horn type speaker whcih was typical for the 1920s. The horn was made by the American company Music Master. (Photo courtesy Canada Science and Technology Museum)

Contributors and Credits:

1) ) The Early Development of Radio in Canada 1901 to 1930 by Robert Murray
2) M2 with amp photo
3)  Lewis Bodkin  <05bodkin555(at)>

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Mar 27/18