Tubes - Transmitting, Audio, Misc.

Designed for use as a combined detector, audio amplifier and automatic volume control tube.
MFR: RCA, Sylvania
SKU: 12SR7
New old stock * No longer available for export.

Designed to operate as a diode detector, avc rectifier and as a audio amplifier in AC, AC-DC, and DC circuits.
MFR: RCA, GE
SKU: 12SW7
New old stock * No longer available for export.

Designed to operate as a converter in AC/DC amplifiers.
MFR: RCA
SKU: 12SY7
New old stock * No longer available for export.

Designed to function as a general purpose diode in 12v circuits often found in automobiles
MFR: RCA
SKU: 12U7
New old stock * No longer available for export.

Designed for AC/DC service from 117 volt line in three way portable receivers
New old stock * New In Box * * No longer available for export.
MFR: RCA, Tung-Sol
SKU: 117L7GT-TS

Designed to operate as AC voltage rectifier in AC powered amplifiers.
MFR: Sylvania, RCA
SKU: 5Y4GA
New old stock * No longer available for export.

Designed to operate as either a full wave, voltage doubler, or half wave rectifier as it has two separate sections.
New old stock * No longer available for export.
MFR: RCA, Sylvania
SKU: 117Z6

Designed to function at high altitudes and rough conditions
New old stock * New In Box * No longer available for export.
MFR: RCA
SKU: 6101

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