[Elecraft] [KAT500 and OT] Is a tuner using VNA feasible ?

[Phil Hystad]

This may be off-topic or it may be a derivative KAT500 question about design.  And, I admit to not knowing that much about VNA (Vector Network Analyzer) devices.

But, the KAT500 discovers an L & C match by a search process, I think it is measuring reflected voltage but not quite sure about that.  Can a vector network analyzer type circuit be used in a tuner to actually measure the complex impedance R + jX values and then use that to compute the required L & C values of the matching circuits (L-network ?).  Thus, given an input frequency would it not be possible to instantaneously (almost) determine the match?

73, phil, K7PEH

P.S.  Or, am I completely off my rocker.