Geo-informatics, GIS, BIM, mapping and location services

Radio amateurs need a mindset shift

Since its inception, amateur radio has moved with technological developments and often led some of it, for example the application of low orbit satellites....

SA needs more citizen science – amateur radio can show the way

Citizen science is scientific research conducted, in whole or in part, by people interested in science but who are not professionally engaged or qualified...

Amateur radio geostationary satellite to support disaster relief communication

While radio amateurs have been building and operating satellites since 1961, most were in low earth orbits until earlier this year when radio amateurs...

Vertical vs horizontal antenna polarisation benefits questioned

Recent spectacular two-way communication between South Africa’s West Coast Radio amateurs and St Helena during good tropospheric propagation condition has raised the question whether...

AMSAT SA space frame: From concept to industrialisation

CubeSat space frames are commercially available today from several manufactures, but come at a high cost. The Rand/Dollar relationship of recent years means purchasing...

Taking amateur radio out of the crowded city

Amateur radio is not immune to advancing technology and electronics. One of the more recent developments in communication control systems is enabling radio amateurs...

Amateur radio societies concerned about the HF noise floor

The International Amateur Radio Union and many of its member societies are expressing serious concerns about the increasing high frequency (HF) spectrum noise floor...

Digital transformation is fuelling weak signals communication

Marconi may be the big name when talking about the development of radio at the beginning of the previous century, but several radio amateurs...

Exploring long distance VHF communication

During the years in the eleven-year cycle with high sunspot numbers, we have often seen the maximum usable frequency rising above 145 MHz and...

A simple satellite antenna that took South Africa by storm

When South Africa was invited to host the International Amateur Radio Union's Youngsters on The Air (YOTA 2018) summer event there were several challenges....
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