HF triode tube - 6S3P-EV (6C3П-EВ) - (NOS)
6S3P-EV (6C3П-EB) is a HF- triode with low level of intrinsic noises. Military -EV version, long life (> 5000 hrs) and high durability. Made for military. 6S3P-EV is similar to EC86/PC86 tubes and very close to WE417A too, but is has different pinout.
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