Is it possible to use the 900-2100MHz coverage of a satellite spectrum analyzer to find the best location for a 3G signal in a very weak reception area? Have the choice of a Satlook Digital NIT or a DrHD1000.
The Satlook Digital NIT has indeed LNB power constantly on. If you attach a regular antenna it will display an error message, complaining about a short. Not the best device for this purpose, but you will see the transponders.
In fact you will see ANY transponder operating in the supported frequency range, but bear in mind that the mentioned field meter have a rather simplified spectrum analyser capability with a large RBW (resolution bandwidth). I would guess that the Satlook Digital NIT has about the equivalent of 1MHz RBW.
This means that you can "see" a GSM, CDMA, UMTS or LTE transponder, but at a rather blurred resolution.
Also, don't forget that mobile communication is not happening exlusively above 900MHz: