The FCC rules require that amateur stations operating in the 23 cm band
may not cause harmful interference to stations in the
Radionavigation-Satellite Service, the Aeronautical Radionavigation
Service, the Earth Exploration Satellite Service or the space
research
service. Nobody is arguing with that. What is questionable are
letters being sent to hams telling them that they are the source of
interference to this new radar system even if they or their repeaters
have not been on 23 centimeters in years.


it's the same thing as hoas. There were hoas who knew the ham did not
have any radios or any antennas at all, yet knew he was licensed as a
ham by the fcc, sso complained that his mere presence in the
neighborhood caused radio frequency interference to all sorts of
things in the properties of all the homes in the hoa, including one
hoa resident who complained he kept hearing both sides of the ham's
conversations coming out of his toilet 24/7 just because of the mere
presence of the ham radio operator being in the neighborhood (without
any radios or antennas at all).

and he wanted the radio frequency interference to his toilet stopped
pronto, immediately.