21zp4a crt sub

[bandersen]

The schematic shows both. The dotted line is the for the electrostatic focus CRT.
Anode wire resistor should be 1M, not 1.7 ohms.

Filament limit resistor should be 0.51 ohms. 0.7 is close but it will run the rectifier tube a little lean and could possibly reduce the HV output.