[morzh]

Well, it has 6A7, and though ll is possible all 6A7 based superhets. I looked at have 455-470khz IF (like Philco 38-15). Also when I tried the generator first the best response I ad was about 465lh or so.

I will take one more look at padders, so far I took a guess that the tall rectangular can with to adders on top is the IF and two separate padders, one on top of the chassis and one at the back of the chassis are 1500khz and 550kz heterodyne trimmers.

I did not try to detail the sch yet, I might just for the heck of it.
I think this is a close sch enough, a Detrola.
Same tubes lineup, though the chassis is not connected to the plug directly.
The one on the right of the p1.

http://www.nostalgiaair.org/PagesByModel...003873.pdf