Pi likely won’t support the heat wave forever, either. Moving it to the other side of the ceiling and down in to the top of a closet or some other air conditioned space certainly isn’t a bad idea. No sense in leaving it in an insanely hot attic when a few extra feet on the feed line from the antenna won’t hurt much of anything. )
I have been wondering, since I installed it in the attic how hot itwould run, and if that would be a problem. Conclusion is that 1w of daily temps above 38°C and PI running between 70° and 78° all will be good, since in normal times, upper temps rarely go above 33°C.
Is there a thermal protection on the dongle ? I know there is one on the PI that will shut it around 85°C.
Don’t know of any thermal sensor/protection on the SDR dongle, and they run hot. I’ve reassembled dongles using thermal pads from Chomerics (therm-a-gap) to provide heat transfer; that’s worked at lowering operating temperatures.