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RCA Receiving Tubes Manuals

Below are black and white pictures of all of the RCA receiving tube manuals, from the first, 1932's R-10 to 1975's RC-30. The first, R-10, is red, and it has a Cunningham counterpart, C-10, which is light blue. Starting with the second manual, RC-11, the Radiotron and Cunningham manuals were combined, hence the prefix "RC". These are not all to scale. RC-11 and RC-12 are, in reality, slightly bigger (wider and taller) than the rest.

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