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Type: | Crystal (911) or dynamic (611) |
Frequency range: | 50-8000 Hz |
Gain: | ? dB |
Impedance: | ? ohms |
Voltage: | - |
Current drain: | - |
Dimensions (W*H*D): | ? mm |
Weight: | ? gr |
Manufactured: | USA, 194x-195x (Discontinued) |
Other: | On/off switch New price 1949 in the US: $22.50-31.00 depending on version |
Related documents: | |
Modifications: |