Equipment of German Wehrmacht - Tonschreiber (Tone Writer) d "Dora"

First portable tape recorder worldwide 1942

 

                                   

Front

Lateral

  Connectors  

Top View

 

Control

 

Operating

   

 
 

Manufacturer   AEG
Model   Tonschreiber d
Tape Speed  

77 cm/s (30.3"/sec)

Frequency Range   50 - 6.000 Hz
Roller Capacity   10 min
Introduced   1941