Description

Quantity One Vintage RCA 3V4 Vacuum Tube NOS NIB *TESTED* New In Box New Old Stock Tested as shown on Hickok 533 Dynamic Mutual Conductance Tube Tester Box worn from decades of storage – The 3V4 is a miniature power amplifier pentode designed for use in the power output stage of compact, battery operated equipment. It is particularly useful in three-way portable receivers which employ 90-volta batteries. The filament is center-tapped to permit operation from either a 2.8-volt or 1.4-volt filament supply voltage.