Vacuum Tube - 6BK7-A-B, Dual Triode, HF
New-Old-Stock (NOS) tube.
The 6BK7 isa miniature twin triode designed primarily for use as a cascode amplifier at frequencies below approximately 300 megacycles. It is especially useful as the radio-frequency amplifier in very-high-frequency television tuners or as the intermediate-frequency preamplifier in ultra-high-frequency tuners. Its performance as a cascode amplifier is characterized by high gain and low noise figure.