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2026-10-09
- 170 new manuals added in aes, alinco, bitsavers, b&k, century, collins, dovetron, ebooks, eico, electric-eye, freq-electronics, goodwill, hickok, johnson, kantronics, micronta, military, national, rca, scientific_radio, sencore, sylvania, tennelec, triplett, uniden, and xyz.
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2026-10-21
- New beta site for public review.
600a_830w
00readme
Late Schematic of the Hickok 600A tube tester, which shows R28 and the Hi-Lo switch. (Not on earlier schematics). Compliments of Ron Toller, N4US.
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