hii purchased the 737NG but i got some problems with the cockpit announcements. While rolling for takeoff, i just hear "80 knots", but neiter "v1" nor "rotate". I did not enter any flightplan - the sounds are activated under pmdg options..thank you

Hi, You have to input flight plan and other certain criteria so that the fmc knows the total weight af the aircraft and then can work out V1 VR and V2 speeds. Without that info the fmc cannot calculate these speeds.