Soviet electron tube 6J9P (6Zh9P) - HF pentode with a steep characteristic, used in the input stages of broadband amplifiers. Equivalent to E180F, 6688
Russian 6N3P-EV double triode tube with separate indirectly heated cathodes, low frequency preamplifier. Extended product life. Near analogue: ECC42, 2C51, 5670, 6385
Russian electron tube 6J9P-E (6Zh9P-E) is an HF pentode with a steep characteristic, used in the input stages of broadband amplifiers. Equivalent to E180F, 6688