On Fri, Sep 20, 2019 at 03:46 PM, Andy G0FTD wrote:
2 - Wouldn't a diode introduce capacitance across Ch0 ? Or inductive lead
effects at VHF/UHF and ruin any measurements ?
Yes, limiter diode will ruin measurement. There are two issues with diode:
- it add parasitic reactance
- it add non-linear distortions of the signal
There is no simple way to protect RF device with no deterioration of it's dynamic range.