[SI-LIST] DC-26 GHz Picoprobe

Hello,

Is anyone on the list using GGB Industries' active probes e.g. 

www.ggb.com/35.html ?

For this Model 35 probe, they claim DC-26 GHz response with 1.25 
MOhm nominal resistance in parallel with 0.05 pF.

They also claim that the probe uses single-point probe tip only (no 
reference point)!! Since voltage is field integral between two 
points in space, I have problem with this claim. Has anyone verified 
the performance? They don't want to disclose the base for that 
claim, saying it is proprietary information. Hm....

I still thinik the probe might be pretty good in a differential 
configuration with two probes used, but I would appreciate any on-
line or off-line feedback if you use it.

Thanks, Neven

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