The frequency range of the RTL2832U SDR radio chipset is 500 kHz –1.75GHz ¹ ². This range can be extended to 24 MHz in direct sampling mode ¹.
It can capture up to 2.4 MHz of the RF spectrum at one time ³. The RTL2832U supports tuners at Intermediate Frequency (IF) at 36.125MHz, low-IF a 4.57MHz, or Zero-IF output using a 28.8MHz crystal, and includes FM/DAB/DAB+ Radio Support ⁴.
(1) RTL-SDR Blog V3 Datasheet (2) Listen In - DIYODE Magazine (3) RTL2832 - All You Need to Know - Amateur Radio Wiki. (4) RTL2832U - REALTEK.