6N14P
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The 6N14P (Russian: 6Н14П) is a miniature Russian-made medium gain dual-triode vacuum tube used in radio equipment. It serves as a low-noise cascode amplifier at HF through VHF frequencies.
The construction of the tube is asymmetrical, with the control grid of the first triode section (pin no. 2) being internally connected to the internal RF shielding plate, thereby making the first section more suitable for common grid operation. It is a direct equivalent of ECC84 and 6CW7 vacuum tubes.
Uf = 6.3V, If = 350 mA uM = 25 Ia = 10.5 mA S = 6.8 mA/V Pa = 1.5 W