21zp4a crt sub

[timmy]

Originally Posted by bandersen

Does this match your set?

Riders vol 13, chassis


First time I have ever seen a focus control on an electrostatic focus set. Usually, it's a jumper with 2 or 3 options.
I've been curious if it gives a smooth focus change. If so, why didn't more sets use a variable control?

we’ll the tube line up looks the same but it shows the magnetic focus tube which would be different if it’s got the 21yp4 then it’s probably the right one.