Special Purpose

Carriage type with S-3 response.
New Old Stock * New In Box * No longer available for export
MFR: RCA
SKU: 926

Carriage type with S-3 response.
Used * No longer available for export
MFR: RCA
SKU: 926-P

Designed to function as a red radiation detector in relay or measurement applications.
New old stock * No longer available for export.
MFR: Continental Electric, RCA
SKU: 918

Designed to function as a red and infrared radiation detector in sound reproduction applications
New old stock * No longer available for export
MFR: RCA, CBS, Westinghouse
SKU: 920

Designed to function as a photodetector tube in relay systems where very high light sensitivity is needed.
New old stock * No longer available for export.
MFR: RCA
SKU: 931A-RCA

Designed to be highly sensitive in the red and infrared spectrum of radiation.
New old stock * No longer available for export
MFR: Cetron
SKU: 1P36

Designed to function as a red and infrared radiation detector in sound reproduction applications
New old stock * No longer available for export
MFR: CBS
SKU: 1P31-CBS

Designed to function as a power output tube in light weight compact equipment.
New old stock * No longer available for export.
MFR: RCA
SKU: 12L8GT

Acorn type detector, amplifier, and oscillator tube
New old stock * No longer available for export.
MFR: RCA
SKU: 955