04-23-2013, 08:57 PM
Electrolytics and resistors tested (wow, what a rats nest under this chassis). I'll soon be getting to all the bakelite blocks. Meanwhile, I want to prepare myself for testing and tracing the various stages.
Just curious, where are all of the good test points to check signals on each stage of the radio? Should I find some sort of a signal on the tabs at the top of the 44/36/75 tubes?
If using an oscilloscope, what signal levels should I expect to find? Primarily, I'll want to be able to check the oscillator output and work my way through all of the stages. If I wanted to inject a signal, do I simply inject an appropriate signal on the cathode of each tube and check the output on that stage?
Thanks!
Just curious, where are all of the good test points to check signals on each stage of the radio? Should I find some sort of a signal on the tabs at the top of the 44/36/75 tubes?
If using an oscilloscope, what signal levels should I expect to find? Primarily, I'll want to be able to check the oscillator output and work my way through all of the stages. If I wanted to inject a signal, do I simply inject an appropriate signal on the cathode of each tube and check the output on that stage?
Thanks!
