The International Amateur Radio Union (IARU) is a federation of national associations of certified radio amateurs, representing over 150 countries and separate territories around the world.

The three IARU Regions are organised to broadly mirror the structure of the International Telecommunications Union (ITU) and its related regional telecommunications organisations. The Regions comprise:
- IARU Region 1: Europe, Africa, the Middle East and Northern Asia
- IARU Region 2: The Americas
- IARU Region 3: Asia-Pacific

The IARU represents the interests of the Amateur Radio Service worldwide to relevant international organisations, promoting the interests of amateur radio and seeking to protect and enhance its spectrum privileges.

Changes to frequency allocations - Monaco

The following in changes to the spectrum available to radio amateurs in Monaco have been announced, effective 26 January 2006:

1.850 – 2.000 Mhz (160m)

- 1,810 – 1, 850 Mhz (Primary, exclusive)

- 1,850 – 2,000 Mhz (Secondary, shared)

50.000 - 52.000 Mhz (6 m)

- 50,000 – 51,200 Mhz

- 51,200 – 52,000 Mhz (Secondary, shared)

70.000 – 70.500 Mhz (4 m) : (Secondary, shared)