6BY8

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The 6BY8  (P/N 154-0414-00) is a diode-pentode vacuum tube with a B9A (Noval) miniature 9-pin base.

It is used in the 547 (V664).

Some instruments using part 6BY8

Instrument Manufacturer Class Description Introduced
544 Tektronix Oscilloscope 50 MHz oscilloscope 1964
547 Tektronix Oscilloscope 50 MHz oscilloscope 1964
Nelson-Ross PSA-021 Nelson-Ross Plug-in 20 kHz Spectrum Analyzer plug-in (?)

Links

  • 6BY8 @ radiomuseum.org