The Worst Countries
Some of the countries (in my humble opinion) with the worst cases of intruders are :
Indonesia, where apparently anyone can buy a radio and operate in the Amateur bands without a licence;
China, for its uncaring operation of a high-power OTHR;
Some African countries where many NGOs (non-governmental aid organizations) bring discredit on their otherwise good work by willfully ignoring all frequency allocations and any requests to cease the interference they cause;
Many Somalian nationals, both in their own country and in other countries, operate illegal radio stations;
North Korea has for many years cluttered the spectrum with harmonics and spurious emissions from their poorly-maintained shortwave broadcast transmitters. They also operate an out-of-band shortwave broadcast on 3560 kHz by deliberately confusing "Broadcast Service" with "Fixed Service".
There are many other intruders, but these are the most persistent and inexcusable, in my opinion.
The above information is picked from VE3OAT page. Click here.
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