On Sat, 19 Mar 2011 18:36:11 -0700 (PDT), Jim Lux
wrote:

It would be difficult to make measurements of dispersive propagation
in the interplanetary media using the natural emissions of Jupiter,
since you don't have knowledge of the relative phases/timing of the
emissions at different frequencies, so you have nothing to compare
against on earth.

Hi Jim,

We would first have to agree what "dispersion" means.

If it conforms to optical dispersion (this having started, at least
for me, in the near IR, which is optical as far as I am concerned),
then the wide bandwidth (offering us with many time coherent sources)
through a frequency dependent media would present different phase
shifts which could then be cross-correlated. Modal dispersion might
present a problem because even though Jupiter is far away, it still
presents a significant arc of span across space (i.e. not even close
to being a point source).

73's
Richard Clark, KB7QHC