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150 in 1 Electronic Project Kit

One of my favorite toys from the 70's. Shown here wired up as "The Big Ear" project: A high gain amplifier, using the speaker as a microphone.

 

Someone's scanned parts of the 1977 Radio Shack catalog This is the page that featured the 150 in 1 as a new product for 1977. There's a larger image on page page 154 of the 1977 Radio Shack Catalog.

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Taken on March 29, 2008