Click to enlargeGeneral Electric Tube Manual (1972 Reprint)

General Electric (USA) Essential Chartacteristics, 1972 vacuum tube data manual reprint. Excellent for quick reference, since it covers industrial (4-digit) numbers, many that are equivalent to standard tube numbers, this is the tube manual we use the most ourselves. Also has fairly complete CV/European to US conversion and a handy basing chart to assist with determining interchangability of tube types.


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