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Why do we have interference on HF frequency bands?

Posted on: 3rd May 2018

In HF propagation, the transmitted signal can be received over a range of 1000 km, and if the assigned frequency is not notified to the International Telecommunication Union (ITU) then it will not be protected against harmful interference. Some neighbouring countries that do not have a regulatory administration have a tendency of using HF frequencies without coordination; hence users may experience harmful interference when operating their radio communication equipment.

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