Porta color

[dieseljeep]

Originally Posted by 1911nutjob

Mine did NOT have the mini manual.��☹️ I’m going off of memory on the CRT, so I could be wrong on the number. It’s also entirely possible this isn’t the original tube, as I bought it restored from a guy who says he was an authorized service technician when these were on the store shelves. I’m familiar with 12ax7’s and the like, compactrons are new territory for me.

It's probably two or more sets made into one!
I scrapped a 1970 set that had a 11WP22 from new, so the 11SP22 was from an earlier model.
Compactron tubes are multi-section tubes that are really not that different than single or dual unit tubes that you're familiar with.
Example: the 6AC10 is like a triple unit 12AU7. Looking at the schematic will help you understand.