On 30/11/2015 21:46, David Michael Gaytko // WD4KPD wd4kpd@... [WSJTX] wrote:
what exactly does "zero" define in the spectrum/waterfall ?
Not quite sure what you are referring to here. The slider to set the zero offset is bias applied to the waterfall and/or the spectrum display. The zero offset and gain are setting the offset and slope respectively of the displayed data allowing you to get the minimum and maximum indications exactly where you want them.
