An off-the-shelf RTL-SDR unit.

Rtl Sdr Receiver V3 Pro With Chipset Rtl2832 Rtl2832u R820t2 For Ham Radio Sdr Rtl For 500 Khz-2 Ghz Uhf Vhf Hf Am Fm - Home Theater Amplifiers - AliExpress

limesdr

Electrosense: RTL-SDR Based Crowd Sourced Spectrum Monitoring with a DC to 6 GHz Up/Downconverter

OH2BNF's Plan for a Large Scale Raspberry SDR (LSR-SDR) Based on RTL-SDR Dongles

KrakenSDR

An off-the-shelf RTL-SDR unit.

Includes 1x RTL-SDR Blog brand R860 RTL2832U 1PPM TCXO HF Bias Tee SMA Dongle (V3) (Dongle Only) Several improvements over other brands including use

V3 R860 RTL2832U 1PPM TCXO SMA Software Defined Radio (Dongle Only) (Black)

I might get a lot of grief for this post, but it is what it is (SDS 100 -vs- cheapo RTL-SDR)

Officially this USB dongle is a Digital Video Broadcasting — Terrestrial (DVB-T), Digital Audio Broadcasting (DAB), and FM tuner. However because of

RTL-SDR

Testing the Outernet Dreamcatcher: Linux Based ARM PC with Built in RTL-SDR

SBITX: Hackable HF SDR For The Raspberry Pi

RTL-SDR With Upconverter and Case