Messing around with my Emerson 1168A. The vertical is sensitive to scene changes while viewing. VO tube is a 12W6 and I tried a 12W6GT,, in which it did not like. Vertical was way out with the switched tube, so I put the old tube back in. Worked like always. I also have doubt as to the health of the sync tube, which has not arrived. The one thing, the 12W6GT tube got hot very quick and it is a NOS tube. Maybe faulty tube, or not a good substitute?
Dan

Is it a metal tube?? In a glancing search I didn't see any reference to a metal 12W6 but did see 12L6 which, being a variant of 25L6 (not 6L6), would differ from the 12W6 in designation only, they're really the same tube. In any event, the electrical specs between metal/GT/G/whatever tubes of the same type will certainly be identical and in that application I'd expect them to sub interchangeably.

12EN6 And 12L6GT


Polaraman

Nope, not a metal tube.
Dan

A 12W6 in a glass tubular envelope is a 12W6GT with an abbreviated designation. The tube you swapped in is probably no good. Don't you have a tester?

No dont have a tube tester yet. It is on my need to get list for sure.
Dan

That's not an expensive tube... I'd just get another one from someone here, or from Antique Electronic Supply http://www.tubesandmore.com/ . They've been around for 20+ years, and have fair prices and guarantee their tubes.

Charles

Duh on me,, one of the pins is missing on the new tube. Charles I will go to the link you provided.
Thanks guys
Dan

Don't tell me...pin #1?
http://www.nj7p.org/tube/bases/7AC.png
Pin #6?

Nope,, #4 is gone. Goof up when it was made? I do believe it is NOS.
Dan

One ePay seller I've had a good experience dealing with has a few12EN6's in his store as well, 1 Big Deal; even the usually pricey CJ's Tube Collection isn't asking much for theirs. (No, I am NOT connected with either of those sellers in any way).