Erik,
? ?I don't know if it helps, but I do not get a serial disconnect when continuously running (>1hr + switching focus) the "tiny Spectrum Analyzer" application with my tinySA Ultra.
? This seems to indicate that the problem is related to a buffer overrun problem in tinySA-App as you first suggested. Since tinySA-App was modified from an application originally written by another programmer, tracing the serial comms logic may take a bit of detective work from you.
? The "tiny Spectrum Analyzer" application might be a workable solution for users who want to use their pc to perform a continuous scan using tinySA Ultra until the issue with tinySA-App is solved.? The "tiny Spectrum Analyzer" application was written by you before the tinySA Ultra was a gleam in your eye and doesn't accept center frequency entries above 1GHz.
Herb
