I wonder if you guys have seen this thread on another forum re RF Probes
https://www.eevblog.com/forum/rf-mic...18-transistor/.
In terms of any direct relevance to this thread, I guess the key term is "Hi-Z", or possible lack of it. I cannot spot any specific number being quoted for the input Z of the probe on eevblog. Is it of any interest or not quite in the park?
B