Yes, there are but it is kind of a catch 22. The FCC part 15 regulations say
that the device must not radiate harmful interference. Problem is, shortwave
receivers are also part 15 devices. The last part of part 15 states that if
the device is interfered with, it must except this interference. If he is a
ham, he is better off. As a ham, his radio would be considered part of his
station. If a device is interfering with a licensed radio station, it must
be fixed or removed from service.


"Colin" wrote in message
...


If you are in the US then I don't know if there are any regulations on EM
compliance.