Designed to function as a general power amplifier and as a transistor power amplifier driver. MFR: Sylvania SKU: 12AE7 New old stock * No longer available for export.
Designed to be used as a biased detector, radio frequency oscillator, and mixer tube. MFR: CBS, Raytheon, Sylvania SKU: 12SJ7 New old stock * No longer available for export.
Heavy duty 12AT7 made by Sylvania for the US Air Force. Designed with a D getter and three micas MFR: Sylvania, USA SKU:12AT7WA-USAF New old stock/New in box * No longer available for export