While watching those Kenwood TS-990 videos on YouTube i got that need to try and make something similar. The real question was if possible on modest hardware. After some time of research and testing, i have the s-meter that emulates analog unit more or less working. Lots more optimizations, testing and improvements are needed off course. The load of the CPU (stmf429) is small due to the use of the DMA2D, LTDC accelerators and external SDRAM. But still not clear if will be the same when adding spectrum display, waterfall and some real time DSP processing.