Here are 2 vintage 5R4 GYB rectifier amplifier radio electron vacuum tube. One
is an RCA and tested on my TV-7 at 52/50 and the other is a GE testing at 54/52 with minimum values of 40/40, so good tubes. I purchased a LARGE collection of mostly NOS vacuum tubes which I will be listing so be sure to check my other listings.
is an RCA and tested on my TV-7 at 52/50 and the other is a GE testing at 54/52 with minimum values of 40/40, so good tubes. I purchased a LARGE collection of mostly NOS vacuum tubes which I will be listing so be sure to check my other listings.