Museum Hours:

Saturday 10-6

Sunday 12-5

Early Electronic Television

Andrea 8-F-12 Trimmers

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The tuner, showing several of the trimmer capacitors

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A closeup of the trimmer capacitor. It is about 1 x 1 x 1 inch, and is ceramic. It is mounted in a sheet metal frame at the bottom (notice where it is crimped in place). Inside the ceramic top is a rectangular place, and there is a similar plate attached to the adjusting screw that is moved in and out.

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Here is the top view of the tuner, showing 15 of the trimmers. They are mounted to the chassis with a 1/4 inch nut and have a screwdriver adjustment.