7C

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The 7C Speech Amplifier is a rack-mounted audio amplifier coupled between the microphone and the RF modulator unit.
The 7C is a system component of the 30FXB Transmitter.

7C Front View
7C Speech Amplifier, Front view
7C, Back View
7C Speech Amplifier, Back view

Variations

The 7C was also packaged as a portable unit - seen here with a Brush Crystal Microphone.

7C Portable, Front View

Circa

1935

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