17-12-2016, 06:15 PM
Now I found the workshop voltages, the mystery of my Soviet GDR valve set is hopefully being solved. The ECH1 Triode Heptode has no voltage on the oscillator anode. What had also confused me is there's a ECC5 double triode that is oscillating OK for FM. Given the schematic is in German that didn't dawn on me at first. So I am missing my mixer for AM and other bands. I am now planning to do some Ohms tests to see if HT is getting to the oscillator anode. This may be a bit trici could also just try a substitute mixer as possibly the ECH81 is defective. Meantime I had to learn a few German terms to better understand the schematic.
