BTW, I think the 434 is one of the nicest scopes ever made. I don't have one, nor have I seen or used one since over thirty years ago - it made a great and lasting first impression on me.
One thing the 432 / 434 brought was an early SMPS predating the custom Tek-made control IC. Properly adjusted, the 434 was a very nice bistable storage scope. -ls-
