[old_tv_nut]

By the way, a difference of 147 vs. 115 volts could result from a 13% variation of triode characteristics, which is probably not a totally unreasonable variation from the tube in the set SAMS measured to one you might have.

[When I was in school, I pissed off the lab instructor by asking how big the variations bewteen tubes of the same type were. He apparently didn't want to admit that he didn't know either.]