Maybe there is no separate discriminator, maybe it's a super regen, there are online references that suggest the ECH/UCH12 was developed for super regen purposes.
Here's a Normende one:
http://dbl.musicweb.ch/schematics/Radios...UKW-E1.jpg
EDIT: Looking at The Shaub UE 52 shematic the super regen theory might fit the bill, triode section = a,g feedback, if it was a mixer osc I would expect to see a feed from the osc to one of the grids or cathode of the pentode.
Lawrence.
Here's a Normende one:
http://dbl.musicweb.ch/schematics/Radios...UKW-E1.jpg
EDIT: Looking at The Shaub UE 52 shematic the super regen theory might fit the bill, triode section = a,g feedback, if it was a mixer osc I would expect to see a feed from the osc to one of the grids or cathode of the pentode.
Lawrence.
