Does anyone know how close the aircraft was to Exmouth Gulf ?
While my experience in this type of software is non-existant my
understanding and experience of data proving and tracing is such
that I would have thought that input data and processed output data
would have been logged.

The transmitters at Exmouth are very high powered but even so the
aircraft would have to be fairly close to get interference.
Devices external to the aircraft would be more susceptible than
anything inside the airframe.

This type of equipment is normally tested to ISO standards for
electromagnetic immunity for certain field strengths, but perhaps
only for frequencies used by the aircraft, not the Very Low
Frequency (VLF) used at Exmouth to talk to submarines.