http://vital.seals.ac.za:8080/vital/access/manager/Index ${session.getAttribute("locale")} 5 Ionospheric total electron content variability and its influence in radio astronomy http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:5473 Wed 12 May 2021 17:41:31 SAST ]]> Updating the ionospheric propagation factor, M(3000)F2, global model using the neural network technique and relevant geophysical input parameters http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:5434 Wed 12 May 2021 16:43:54 SAST ]]> The search for an ionospheric model suitable for real-time applications in HF radio communications http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:5488 Thu 13 May 2021 04:41:21 SAST ]]>