I'm currently testing 3 AudioMoths in preperation for some bat fieldwork this summer. Thanks to this forum I've now got two working well, despite the usual small amount of noise from the SD card writing. However, the third unit doesn't seem to record anything but white noise (see secreenshot from Kaleidoscope below). It's been configured with the same settings as the other two for all tests, but this is always the result! Any suggestions?