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The 6GM8  (European: ECC86) (Russian: 6Н27П) (P/N 154-259,154-0259-00) is a dual triode vacuum tube with a B9A (Noval) miniature 9-pin base.

It was originally intended for functions like mixers in FM tuning section of car radios and can be operated on very low anode voltages (30 V max, 25 V typical).

Aged/Checked/Matched Pair Details
Used in Tek Part# S/N Range
516 157-0068-00 All


Tube aging procedure / Selection and checking procedure


Used in

Some instruments using part 6GM8

Instrument Manufacturer Class Model Description Introduced
516 Tektronix Oscilloscope 516 15 MHz dual-trace scope 1960
81 Tektronix Plug-in Type 81 plug-in adapter 1960
S Tektronix Plug-in Type S Diode recovery tester plug-in 1960