I have a bunch of NOS Russian tubes that I'd like to use if someone can help me identify them. And possibly offer some clues as to their capabilities.
These were sold in the 80s by Radio Shack and have the white Realistic Long Life logo as well as a purple/blue ink logo that says 6L6GC and Made in USSR. Comparing side by side with an old RCA 6L6GC, the Russian tube has a taller but slightly smaller diameter bottle, the plate structure is the same height but perhaps marginally narrower. They have ordinary looking black bases (not coin). RCA 6L6GC at left, Russian tube at right.
Any ideas?
These were sold in the 80s by Radio Shack and have the white Realistic Long Life logo as well as a purple/blue ink logo that says 6L6GC and Made in USSR. Comparing side by side with an old RCA 6L6GC, the Russian tube has a taller but slightly smaller diameter bottle, the plate structure is the same height but perhaps marginally narrower. They have ordinary looking black bases (not coin). RCA 6L6GC at left, Russian tube at right.
Any ideas?
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Thanks Wavebourn. Will those take 450V on the plates and 400V on G2 if I keep the dissipation under 20W? Looking to use them in pentode PPP.
They look like 6L6GT, a lower power version of the GC. You may have problems with the screen grid if over 250V according to the data sheet. The GC will take 350V and the same as the anode voltage if in triode mode at a maximum of 350V. Anymore and I wouldn't trust it.
Based on experience with this tube.
Is that a yes to the 450/400 Va/Vg2 or a general endorsement of this tube or both?
Thanks gents for the help.
Unfortunately neither, I was agreeing with the warnings posted just above my post - sorry for not making that clear.
I would not trust those at anything close to 6L6GC operating conditions. They were just adequate when treated as a 6L6GA, and I would not run them to close to Pd.
Better tubes are out there.
I would not trust those at anything close to 6L6GC operating conditions. They were just adequate when treated as a 6L6GA, and I would not run them to close to Pd.
Better tubes are out there.
Ok, I understand. In this case Pd is not a concern, I would be operating it pretty relaxed. But I am curious about Va and Vg2. Exceeding those is usually a matter of arcing or not. If they don't, operating at higher voltages doesn't have adverse effects on life in my experience.
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