The coast was blowing a steady force five, which is about the worst thing that can happen to an omni capsule. The foam windscreen did nothing. A wool sock over the foam helped more than it should have, and standing in the lee of a boat shed did the rest.
The lesson, again: walk around before pressing record. Two metres to the left of a wall can be the difference between a usable take and forty minutes of rumble.
Small rural substations hum at twice the mains frequency, and this one sits almost exactly on a B flat once the harmonics stack up. Recorded from the fence line for twenty minutes while the evening insects slowly took over the high end.
A summer storm moved over a farmyard with a tin barn, a slate house and a canvas awning. Moving the recorder between them inside an hour gave three completely different textures from the same rain: tin is bright and percussive, slate is soft and close, canvas is a low drum.
All three are in the archive, unprocessed apart from a gentle high-pass.