[Rob Quay]

Thanks Chas. I’ll get busy sorting things out. Is there any merit to looking at some schematics with a similar tube lineup? My thought is that someone putting together a radio kit would begin with a proven design. 
The ballast tube seems to make sense in the circuit as the socket is only wired for two pins. If it turns out that there’s no other radio like this one that’s survived (and this one almost didn’t) I really don’t want to mess it up beyond repair. - Rob Q.