Many, many years ago (about 40!) at a radar unit in Yorkshire the local GPO telecomms engineers turned up to check all our transmitters as a local resident had complained about hearing our ATCspeak on his TV.
After the engineer had confirmed that all our kit was 'in spec' we enquired "what now ...?" The engineer said that he would now visit the complainant and explain that as our kit was OK it must be his TV at fault.
The engineer said that he would instruct the luckless TV viewer to get his set repaired/scrapped and issue him with a summons for listening in to our transmissions without a licence
Any way isn't it all to do with Harmonics and the Appleton Layer?
