  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. |
Triode, USA Customer Service M-F 9AM-4PM CT 1-800-774-3201 Email us Anytime: questions@triodestore.com |