MARCONI WIRELESS of AMERICA - TYPE 107A RECEIVER

 
Frequency range:  ?
Malker Marconi Wireless Telegraph Co. of America
Vintage: 1917
Comment: Originally a Fleming valve tuner, it was converted by the factory to a 107A
107A receiver, (Radiomuseum.org) 
 
 Credits and References:

1) Radiomuseum.org/r/marconiusa_107a.html
 
 

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Apr 20/20