I ended up mainly doing geophysical field work with a lot of aquisition, processing, and interpretation coding work .. but I dabbled in symbolic computer algebra systems (in Australia) for a while and loitered a little in technical history of the borderline classified - I interviewed "for the record" Leonard Beadell, Jack Wong Sue, Mark Oliphant, people associated with the Mungalalu Truscott Airbase, etc.

I seem to recall a fair bit was done here with early over the horizon radar work but I didn't go far in that direction ending up more in radiometrics and resource | energy tracking.