Designed to be used as a voltage reference tube in electronic regulated supplies. New old stock * No longer available for export. MFR: Raytheon SKU: 5783
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 red and infrared radiation detector in relay or measurement applications. New old stock * No longer available for export MFR: CBS SKU: 919
Designed to function as a regulator or control tube where equipment requires stabilized output voltages in the Kilo volt range. New old stock * No longer available for export. MFR: Victoreen SKU:7234
Designed as a long life passing tube in series regulated power supplies. Has a 100 Watt dissipation and capable of replacing 4 5998 tubes in most circuits. New old stock * No longer available for export. MFR: Tung Sol SKU: 7242
