[photon_rancher]

Realtime scopes exist at this bandwidth but are crazy expensive, and then they have frequency-stitching artifacts all over the fourier plane. (Because they use mixing techniques)

Sampling systems are about $20k - 50k without probes in this bandwidth.

Keysight DCA-M and picoscope have the best public prices, and exfo has an eye analyzer in that price range. There’s also DCA-X but nobody wants to pay 10k extra for a touchscreen.

Unfortunately tek doesn’t make electrical sampling systems anymore, just optical.

[KK7NIL]

The only scopes using frequency mixing are the LeCroy scopes over 33 GHz and these have been commercial failures.

All the other scopes on the market use time interleaving (time multiplexing) which has much better characteristics but requires that the ASICs have much higher Ft, which requires a significant capital investment.

Sampling scopes are not actually that much cheaper now a days, especially after you take into account the cost of the clock recovery device that you would need to build a proper eye with a sampling scope (I discussed this further in other parts of this thread).