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I'm using GPS receiver based on u-blox module and common RTLSDR usb receiver, windows 7 pro.
The problem is that GPS working fine gives a coordinates (tested with u-blox test software). But on RTLSDR Scanner when I setup GPS receiver in EDIT->GPS Devices NMEA at COM5, test mode is showing 12 from 15 satellites at green signal but not giving latitude and longitude coordinates and also there is no GPS logging in EDIT->Preferences.
So in the bottom of program window there is grey dot and only information GPS Enabled.