I got two linear power supplies from Seller sep_store on Ebay, great to deal with and the power supplies are very well built.
I got one for the KiwiSDR and the Broadband Modem and the difference is amazing. Night and Day !
Now I have an issue where my electric car charge point is causing a high pitched noise intermittently throughout the MW band and maybe elsewhere, I'm working tonight so shouldn't be heard for the next 12 hrs at least until I get home after night shift. But the very loud tearing noise associated with those filthy switch mode supplies is gone.
Let me know what ye think.