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Saturday 10-6

Sunday 12-5

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Early Electronic Television

Dumont 180 Chassis

Front view

On the top chassis are the horizontal sweep and video output tubes. On the lower chassis are video detector, video IF and tuner tubes. Note the miniature tubes toward the front. The tuner was replaced with a postwar one.

On the top chassis are the sync separator and vertical sweep tubes. On the lower chassis are the sound IF, detector, amplifier, and output tubes

Rear view. The CRT is copied from the 1936 Cossor design.

The original tuner

The new switch assembly 

With the RF input trimmers installed. The empty hole is for the oscillator tube.

The RF amplifier is working. I am missing 3 more trimmers for the RF output.

The completed tuner