diy IF transformers: first attempt.

[Kalee20]

For almost all purposes x1 (and switchable x1/x10) probes should be banned. Nasty things that will mislead those who don't understand.

x10 probes can be misunderstood too, I was using a x10 probe with a scope in the presence of the Quality Manager at a company. First thing I did of course was, clip it to the 'cal' square-wave output on the scope, the displayed waveform showed the probe compensation was wrong, so I adjusted the probe trimmer, which was covered by a label, for a nice flat-topped square-wave.

The QA manager watched me in horror. "You've just invalidated the calibration of that probe!" he said.

Words followed... And the QA manager didn't last much longer...