[CamperBob2]

There is an interesting new 6 GHz sampling scope that could potentially be useful for some of this work: https://www.eevblog.com/forum/testgear/pocket-sized-6-ghz-1-...

Haven't used it myself, but they seem to have a really solid customer support ethic, given the way the thread developed.

[wrs]

And re the original topic, that thread has a reference to a 2.7GHz active probe for $226!

https://www.lasmux.com/product/single-ended-active-probes/