This a bad idea : r/RTLSDR
USB2.0 DAB FM DVB-T RTL2832U R820T2 SDR RTL-SDR Dongle Stick Digitális TV Tun
MAAS-USB-RTL-SDR-Stick-RTL2832--R820T
An off-the-shelf RTL-SDR unit.
How RTL-SDR dongles work
R820T2 Chip Discontinued: Low Cost R820T2 RTL-SDRs will Continue, Airspy Will Redesign
RTL-SDR V3 R820T2 RTL2832U 1PPM TCXO SMA RTLSDR Software Defined Wireless - AliExpress
If you've ever been curious about software defined radio (SDR), this USB stick is the easiest way possible to have fun with a powerful, configurable
Software Defined Radio Receiver USB Stick - RTL2832 w/R820T
RTL-SDR, The SWLing Post