The 6EJ7  (European: EF184) (Russian: 6Ж51П) is a high-gain frame grid RF pentode vacuum tube with a B9A (Noval) miniature 9-pin base.

Some instruments using part 6EJ7

Instrument Manufacturer Class Model Description Introduced
526 Tektronix Audio/Video 526 NTSC Vectorscope 1959
Telequipment D56 Telequipment Oscilloscope D56 15 MHz 2-ch scope (?)
Telequipment TD51 Telequipment Plug-in TD51 Timebase plug-in (?)

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