KB 830, 1939 superhet radio

[ppppenguin]

I can't see any references to a 20D2 online. It's a triode hexode. Would the slightly more common 20D4 triode heptode be adapted to the role? Or even a common ECH81?

http://www.mif.pg.gda.pl/homepages/frank...2/20D4.gif