band, the wide variety of ranges that can be spanned with it, and its shared nature, it tends to be extremely crowded, and interference from other amateurs and broadcasters often limits available and usable frequencies on this band.. In recent years amateurs in east and southeast Asia have also suffered severe interference from illegal users. Band plans In most jurisdictions the subdivision of the band into different operating modes is according to informal convention rather than legal requirement. IARU Region 1 Europe, Africa, Middle East and Northern Asia IARU Region 2 The Americas IARU Region 3 Asia-Pacific Japan Canada Canada is part of region 2 and as such is subject to the IARU band plan. Radio Amateurs of Canada offers the bandplan below as a recommendation for use by radio amateurs in that country but it does not have the force of law and should only be considered a suggestion or guideline. United States Key See also Shortwave bands Skywave References Amateur radio bands