Many Radio Amateurs suffer from local QRM, so much so that their hobby is endangered.
Small receive-only antennas seem to offer benefits, particularly as they can be located in quiet areas of hams’ QTHs.
Having done a brief study on the effects of using LED bulbs – EMC-wise and biological, I thought that results of the searches would be useful to others in their search for solutions.
https://www.larches-cottage.co.uk/rx_antenna/listen_proj.php
73, Keith M0KIL