Thank you Rich, can you possibly let me know what publication the information is in and I can look for it on line, It may help me stop asking these sort of questions?
I have done some testing with a home made CRT tester/checker and the pin out of the CRM122 is as follows: -
The base has been changed for a duodecal one, also I have powered up the heater from my power supply with a current limit of 300mA and the heater volts is as near as possible to 6.3 Volts, and with my little tester it is showing as it having a good emission. So I guess a few things were changed in the re-gun?
Adrian