MDF-1 DF Receiver


Frequency Range: The manual doesn't mention it.
Use: Marine D/F receiver
Circa: 1926
Comment: Although there are circuit diagrams and a lot of words in the manual, none of the vacuum tubes are identified on the circuit schematics.  There is little or no description of the equipment itself.

Need MDF-1 photo

MDF-1 Operators Manual - PDF (Courtesy Laval Desbiens via Spectralumni) 

Contributors and Credits:

1) Spectralumni
2) Laval Desbiens <desbiens.laval(at)>

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May 12/08