[Hallicrafters] S-20R schematic

[Waldo Magnuson]

I was recently lucky to inherit a Hallicrafters S-20R (to go along with 
my other 8
Hallicrafters) from a SK cousin.  The receiver is original and nearly 
like new.  I have a copy of the manual but the schematic is hard to 
read.  Does anyone have a good schematic I could get a copy of?  And 
does anyone know the sensitivity of the external S-meter that was 
optional for the S-20R?  Thanks.
73,  Skip Magnuson  W7WGM