Designed to be used as a frequency multiplier and for special amplifier service. New Old Stock * New In Box * No longer available for export MFR: Amperex SKU: 7645
Designed to function in rough conditions such as sever shock, vibration, high temperature and altitude. New old stock * No longer available for export. MFR: Sylvania SKU: 7761
Designed to function in rough conditions such as sever shock, vibration, high temperature and altitude. Primarily used in audio amplifiers. New old stock * No longer available for export. MFR: Sylvania SKU: 7762
Intended for use as a extremely high gain current amplifier in applications where the input signal is in units of micro-micro-amps. New Old Stock * New In Box * No longer available for export MFR: Tung Sol SKU: 7851
Designed to be used in class C RF amplifier, oscillator, or frequency multiplier. New Old Stock * New In Box * No longer available for export MFR: RCA SKU: 7905
Designed to function as a frequency multiplier in mobile communications devices. New Old Stock * New In Box * No longer available for export MFR: Westinghouse SKU: 8084
Designed to function as an oscillator tube with excellent stability over a wide range of frequencies. New Old Stock * New In Box * No longer available for export MFR: RCA SKU: 8058