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
Designed to be used as a high gain voltage amplifier and a cathode type phase inverter This tube can replace 7247 New old stock * No longer available for export. MFR: Sylvania, USA SKU: 12DW7-SYL
Designed to function as a gated amplifier in a color TV receiver. In such service it acts as a sync separator or sync clipper. MFR: Sylvania SKU: 12CS6 New old stock * No longer available for export.