11-05-2017, 08:31 AM
The Russian EL84s were originally military grade valves called 6P14P (Latin alphabet) made by Reflektor in Saratov.
Current production, which should be to the same specs, is by Sovtek (now just a marketing name of New Sensor Corp - a USA business - but still in Saratov) - there are different types/grades - the best is the 6P14P-EV which is good for 5000 hours; the "-V" is only good for 1000 hours and the plain 6P14P is rated for 3000 hours.
The main thing is that the "-V" and "-EV" are the military ones and can withstand 150 to 300 G of acceleration.
In Russian, the 6P14P series are actually called 6n14n, 6n14n-B and 6n14n-EB (Cyrillic alphabet)
Current production, which should be to the same specs, is by Sovtek (now just a marketing name of New Sensor Corp - a USA business - but still in Saratov) - there are different types/grades - the best is the 6P14P-EV which is good for 5000 hours; the "-V" is only good for 1000 hours and the plain 6P14P is rated for 3000 hours.
The main thing is that the "-V" and "-EV" are the military ones and can withstand 150 to 300 G of acceleration.
In Russian, the 6P14P series are actually called 6n14n, 6n14n-B and 6n14n-EB (Cyrillic alphabet)
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