It's variable, over a wide range (25 to 150 dB). 73, Wayne N6KR > On Oct 3, 2020, at 4:02 PM, Doug Millar via Elecraft <elecraft at mailman.qth.net> wrote: > > Did I miss it? Is there a gain setting for the db/division vertical scale or is it fixed? The P3 is variable. Doug K6JEY > >