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The 6CG7  (P/N 154-0134-00) is a dual triode vacuum tube with a B9A (Noval) miniature 9-pin base.

6CG7 Tube

It is used in the Tektronix 575 to drive the X and Y CRT deflection plates, and in Type Q as a bridge excitation driver.

Links

Some instruments using part 6CG7

Instrument Manufacturer Class Model Description Introduced
3C66 Tektronix Plug-in 3C66 Carrier amplifier plug-in 1963
575 Tektronix Curve Tracer 575 Curve tracer for transistors 1957
Q Tektronix Plug-in Type Q Strain gauge preamp plug-in 1960