Designed to be used as a voltage regulator in medium voltage applications. New old stock * New In Box * No longer available for export. MFR: Victoreen SKU: GV6C-4000
Designed to be used in automobile headlight dimming service as the tube is very sensitive to light, allowing the tube to increase or decrease resistance in the circuit. New old stock * No longer available for export. MFR: RCA SKU: 6328
Designed to act as a voltage regulator New old stock * No longer available for export. MFR: Amperex (Made in Holland), Heinz and Kaufman (Made in Germany) SKU: 6354
Intended for operation as a pulse rated grounded grid oscillator at frequencies as high as 5000 megacycles. New old stock * No longer available for export. MFR: GE SKU:6442
Designed to function as a general purpose triode acting as a oscillator, detector, or amplifier. New old stock * No longer available for export. MFR: RCA, National Union, Sylvania, Mission Bell Radio SKU: 76
Designed to function as a voltage regulator. Keeps the voltage around 150v and amperage between 5-25 MA New old stock * No longer available for export. MFR: Tung Sol, Raytheon SKU: 6542