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.

First ZS to ZS Contact on 8 Metres

Radio amateurs in South Africa have had access to 40,675 to 40,685 MHz for many years, but is was only really noticed earlier in 2015 when the new radio regulations were promulgated by ICASA, the South African Regulator.

In a telephone conversation, Willem Badenhorst, ZS6WAB, informed the South African Radio League about the first-ever ZS to ZS contact on 40,675 MHz. It was made on Sunday 16 August 2015 between Ian Roberts, ZS6BTE, in Johannesburg (KG33xv) and Willem, ZS6WAB, at Polokwane (KG46rc) using FSK441 and covering a distance of 288 km. Both stations are equipped with a three element Yagis and 100 Watts.