Electron tube 6J1P-EV HF pentode with a short anode-grid characteristic of increased durability, reliability and mechanical strength. Equivalent: 6AK5, EF95, EF95F, EF905, 6F32
Russian 6P15P-EV tube broadband power amplification output pentode. High reliability, life non less 5000 hours! Near equivalent: EL83, SV83, EL803S, 6P1T
Russian tetrode tube GU-74B are direct replacements for use in some of the best-built RF power amplifiers, including Alpha 99, 91B, 8100; ACOM 1000, 1006, 1010, 2000A. Fully equivalent to the modern 4CX800A tube
Russian 6N3P-EV double triode tube with separate indirectly heated cathodes, low frequency preamplifier. Extended product life. Near analogue: ECC42, 2C51, 5670, 6385