re-tune somewhere near Penrith

Strange you should mention that, outside Penrith on the A66, my tuner went from R2 to R3, then lost the radio altogether, when I pulled it out and re-started it, it found a perfectly good signal - must be the Penrith effect!
Similar thing happened in Cirencester, perfectly good signal on the way in, completely lost RDS when I left two days later, but that's with 3.0A.