RTL-SDR Blog sticks have been around for a while. They can receive HF signals up to 1000 MHz or higher. The RTL-SDR Blog V4 is the fourth generation.
RTLSDR4Everyone: Review of 5 RTL-SDR Dongles
RTL SDR Blog V3 HF reception - Sand, software and sound
New RTL-SDR BLOG V4 DONGLE
RTL-SDR V3 Review: RF-Vision Superpowers! - OnElectronTech
Nooelec - Nooelec NESDR SMArt v5 SDR - HF/VHF/UHF (100kHz-1.75GHz) RTL-SDR. RTL2832U & R820T2-Based Software Defined Radio - SDR Receivers - Software Defined Radio
Nooelec - Nooelec NESDR SMArt v5 Bundle - HF/VHF/UHF (100kHz-1.75GHz) RTL- SDR Kit with 3 Antennas. RTL2832U & R820T2-Based Software Defined Radio
RTL-SDR Blog V4 Dongle Initial Release!
fake rtl sdr blog has same circut board as original v3 : r/RTLSDR
What are some ways you've improved performance of an RTL-SDR? - Quora
RTL-SDR Blog RTL SDR V4 R828D RTL2832U 1PPM TCXO SMA RTLSDR Software Defined Radio with Multipurpose Dipole Antenna - AliExpress
RTL-SDR Blog
