South Africa’s voice on shortwave goes silent

Shortwave is where radio communication began. Once a powerful voice to tell the story of South Africa to the world, this voice has gone silent as Sentech closed down its shortwave broadcasting facility at Bloemendal near Meyerton on 30 March 2019. Sentech inherited South Africa’s Bloemendal shortwave radio station near Meyerton when Radio RSA was […]

New focus on high-altitude platform internet

In the 1990s and 2000s, several projects were launched to explore the potential application of high-altitude platforms (HAPs) for telecommunication and remote sensing. The US, Japan and South Korea took the lead with several projects. HAPs are commonly deployed in the stratospheric layer, far higher than the altitude at which commercial aircraft operate, and are […]