Perhaps I should refer to what I am actually trying to do here.  I have this
same preamp.  The input is really not much of a question since the source
for it is a >5k + j0 ohm coil.  It's tough to match, but I have something
that works.  Once again, magnetic components for this particular project are
a nono.  It also needs to be small in size.  This eliminates the use of
large value inductors, and large trimmer caps.  It's the output that's
giving me grief.  I need to get a measurement of the current impedance
before I can do much to fix it, since the only specs I have for the active
component are for a long way outside of my freq. range.

The test equipment I have available is as follows:
1xHP4395A network analyser
1xHP54645A DSO
1xHP43961A Impedance test set
1x Nice function generator.
1x Not so nice function generator.

1x Hybrid power splitter

With that, and something I can build easily, how can I measure s-parameters
or impedances accurately?

--Brendan

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