Quote:
Originally Posted by Tubejunke
I have a 58 Zenith Space Command that uses a 5AU4 instead of the pretty much standard at the time 5U4. I may be wrong, but it seems like the specs were almost identical and I can sub the 5U4 in with no problems. This particular chassis design was used for a number of years and through the run they used both tubes. A power supply/rectifier is a pretty basic and straight forward circuit that you wouldn't think would require much design change.
|
There was a lot of things that Zenith did, that didn't seem to make sense. The 58 model was the first of that series of chassis. They regained the favour of the service community, replacing those hard to work on 56 and 57 upright chassis.