It is not obvious to me that emission limits are being exceeded here, and I don't have a calibrated antenna which would allow me to decide one way or another.

It is not obvious to me that emission limits are being exceeded here, and I don't have a calibrated antenna which would allow me to decide one way or another. But even if emission limits are not exceeded VLF-based radio-clocks near the loop will still have much more noise to contend with.