Hey oldschoolbob, interesting thread! You inspired me to crank up my old oscilloscope (Tektronix 5440) and mess around with it. I don't have a passive probe so I kinda had to wing it to make sure the oscope works. It does! So, now I'm trying to figure out how to get my hands on a probe. Looking to buy or build a P6028 probe. A few old ones out there on ebay, but I am also reading that you can make one. BNC connector, 1Mohm, 24pF. Spec sheet says it is 33mhz, x1, 600v passive. I found a couple of videos on making your own probe and it looks not too difficult. Anyone have suggestions on how I can get this done? (need resistors, etc.)
Thanks!
(Don't mean to hijack your thread but I'm eager to learn about oscopes as well.)