ECC86 has a center value of gain 17 on this tube tester. Gain in Mu, Conductance (Gm) in umho. ( Tube tester not included ).
Item Tag: ECC86
Pair Amperex 6GM8/ECC86 NOS Vacuum Tubes
Pair of Amperex Unused 6GM8 ECC88 Vacuum Tubes. Tubes test NOS.
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Strong NOS AMPEREX BUGLE BOY 6GM8 / ECC86 Tube
STRONG NOS TUBE.
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2 x 1963 TESLA 6GW8 ECC86 Tubes Czechoslovakia Strong Matched
Great matched pair. Test strong @ 80%. Rated Strong. No shorts. Tested with Knight 400A Tube Tester.