in KC901V spectrum analyzer mode, when activating max hold (blue trace) i suggest it should be below the current (yellow) trace, because in bigger span where a frequency only visible as vertical straight line, the max hold view will block current spectrum view. i want to see intermittent spectrum view in yellow trace, if max hold is blocking my view, how can i know how frequent a frequency is occuring in real time? we dont have problem seeing maximum value of spectrum because they always in maximum value, so no problem seeing blue trace even if its below the yellow trace, so blue trace should be below, and yellow trace on top. this should be better GUI implementation. i hope for firmware upgrade for this matter, waiting your reply, thanks.