Opportunity Hunkers Down During Dust Storm
This is going to be a very long wait for pallidin to back up this claim.
Here is a list of the RTG powered spacecraft NASA has launched over the years:
Viking 1 Lander
Viking 2 Lander
Also the Apollo Lunar Surface Experiment Packages on Apollo's 12 - 17 used RTGs.
Do you know what they all have in common palladin? None of them were