Designed for rectifier use in equipment requiring a high peak inverse voltage rating. New old stock * No longer available for export. MFR: Cetron SKU: 5R4WGB-JAN-CET
Designed to be used in class A and class C amplifiers and is tested as a frequency doubler at an output frequency of 400Mc. New old stock * No longer available for export. MFR: 5851 SKU: Tung Sol
Designed to be used as a amplifier tube at frequencies up to 250Mc. New Old Stock * New In Box * No Longer available for export MFR: Ken-Rad SKU: 826-KEN-RAD
Designed to function as a RF power amplifier in class B and C amplifiers New Old Stock * New In Box * No Longer available for export MFR: RCA SKU: 814-RCA
Designed to be used as a beam power amplifier in applications requiring continuity of operation. New old stock * No longer available for export. MFR: GE, Sylvania SKU: 1622