I'm trying to visualize the frequency band utilization during a GSM phone call using SDR. Ideally, I would like to plot the whole 900 MHz range, i.e. 876-959 MHz. However, even setting the zoom to the minimum I'm only getting a band of about 2 MHz on display (here: 899-901 MHz):
How can I display a wider frequency band on the spectrum analyzer and waterfall graphs?