08-03-2017, 03:09 PM
The EZ80 will have a higher heater voltage and normally the heater voltage will be less. Last night I was still on the signal and oscillator stages. These days I do more schematic work than actual applied work because I feel there are gaps in my overall understanding. For example notice the IF and mixer stages in American HAM sets. As I said before cathode signal injection is often found. The HAM schematics I find easier. I will comment on the detector stages later.
