It transmits a pulse signal and there is a potential problem with the signal having residual sidebands at 136 kHz where the European amateurs operate. Loops with deep side nulls were expected to work satisfactorily with this. Omnidirectional e-field probes could have a problem. Once these pulses overload the front end components of a system they will be all but impossible to remove with downstream filters. Another problem is power line noise from high tension lines that run the length of the Outer Banks.
Insulators tend to get salt encrusted from the sea water spray.
Special insulators that seem to be designed to mitigate this problem are installed so the problem may not be as bad as in the past with conventional insulators. If a problem is due to a single errant insulator we can move up or down the beach to get to a more quiet area. Large air core loop LF antennas. Narrowband audio processing for weak signal detection. DAT recorder for post facto processing.