The construction of the KAT-7 array in the Karoo region of the Northern Cape in South Africa was intended primarily as an engineering prototype for technologies and techniques applicable to the MeerKAT telescope. This paper looks at the main engineering and scientific highlights from this effort, and discusses their applicability to both MeerKAT and other next-generation radio telescopes. In particular we found that the composite dish surface works well, but it becomes complicated to fabricate for a dish lacking circular symmetry; the Stirling cycle cryogenic system with ion pump to achieve vacuum works but demands much higher maintenance than an equivalent Gifford-McMahon cycle system; the ROACH (Reconfigurable Open Architecture Computing Hardware)-based correlator with SPEAD (Streaming Protocol for Exchanging Astronomical Data) protocol data transfer works very well and KATCP (Karoo Array Telescope Control Protocol) control protocol has proven very flexible and convenient. KAT-7 has also been used for scientific observations where it has a niche in mapping low surface-brightness continuum sources, some extended HI halos and OH masers in star-forming regions. It can also be used to monitor continuum source variability, observe pulsars, and make VLBI observations.

In August 2017 a new radio telescope, the Ghana Radio Astronomy Observatory (GRAO), was officially inaugurated at Kuntunse, Ghana. The GRAO is a former satellite Earth station and now the first operational station in the African VLBI Network (AVN). The Jodrell Bank Centre for Astrophysics (JBCA), supported by the UK's STFC/Newton Fund, has developed a new pulsar timing system (Hebe) for the GRAO. We present some aspects of the design of Hebe and an outline of the first pulsar detection at GRAO.

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'n Omvattende stemevaluasie behels meer as net die evaluasie van perseptuele en organiese aspekte. Vir 'n volledige stemevaluasie is dit belangrik dat verskeie objektiewe metings die diagnostiese battery aanvul. Ten einde normatiewe riglyne vir sekere kwantitatiewe elektro-glottografiese metings vir die Universiteit van Pretoria se Spraaknavorsings-laboratorium daar te stel, is 25 mans en 25 dames metperseptueel normale stemme, uit 'n ouderdomspektrum van 8 tot 80 jaar, ondersoek met betrekking tot gemiddelde fundamentele frekwensie, piek-tot-piek frekwensiefluktuasie, piek-tot-piek amplitudefluktuasie en harmoniek/ruis-verhouding. Resultate dui aan dat al hierdie parameters sensitiefis vir verandering in stemproduksie as gevolg van veroudering, vokaal- en luidheidsveranderinge. Die waarde van die verkree data vir navorsing en die kliniese praktyk word bespreek.

This paper presents an overview of the radar industry in South Africa since the first radars were built and used during World War 11. The achievements and progress that have been made since then for tracking radar systems, searcWdesignation radar systems as well as radar related technologies will be discussed.