On Guinevere, I had planned on using the RS trans for a seperate DC supply. Not too expensive and keeps things a bit seperate. The charging current spikes from a cap input filter tend to spread around and infect things. Some small resistive/capacitive filtering on the primary side of the filament TX ought to keep the B+ quite clean.

If I try Golf sometime, and after hitting that ball, ever find it again, I'll put it back in my pocket, consider myself lucky and call it a day.
regards,
Douglas