Welcome to the radioastronomysa.au website, an attempt to highlight some RA activities, particularly with our Callisto Spectrometers, here in South Australia (not South Africa) as we approach the peak of Solar Cycle 25.  The website is very new and there may be some, perhaps lots, of errors and omissions in the content presented here.  Our apologies,  but creating a website is not my day job and things will be finished or fixed, as we find them and can get around to it.  Please note that we are not trying to sell anything to you and we will not be inviting advertisers onto this site to do so either.  This website has no AI generated content, you should be able to tell by the quality of my text and the poor focus on many of the images here.  There are some links to a number of our usual suppliers but we don't seek anything for the plug.  The email address will be operational soon but it is a low priority while we work on completing this site's planned content.  Unplanned content may follow shortly after that.  We hope that you find some of it interesting.  Peter,  August 2024