Quote:
Originally Posted by old_tv_nut
Maybe someone who knows for sure can answer - my impression has always been that the 21FB and 21FJ got some phosphor modifications at times without changing the electrical characteristics or the tube number, but I don't know.
What tube number were the first Sylvania rare earth roundies?
|
From what I've read Sylvania introduced their line of '65 color receivers in June of '64. These '65 models were the first to employ Sylvania's new "Color Bright 85" picture tubes using Sylvania's new rare-earth red phosphor. I don't have an exact tube/part #. Pretty sure these were 21" round tubes. 25" tubes were used starting w/the 1966 models.
-Steve D.