RCA U70 UHF Converter

[bandersen]

I decided to take a break from my GE 810 project and take a quick look at this guy. It a top of the line RCA U70 UHF converter.


There's some separation in the upper right, but otherwise it's in good condition.
I wonder what the UHF jack in the lower left and the RCA jack center bottom are for


Most converters just have a 6AF4 oscillator and converter tube, but this adds two 6CB6 amplification stages.


It's also very well built. Check out the tuning cavity. Several slugs move in and out of coils when turning the dial.


Heavily shielded 6AF4 tube.


Just a 3-section electrolytic to deal with. Not a single paper cap.
Does anyone have a schematic ?