RTL-SDR vs Airspy – which one is better?

This article contains affiliate links for which I may be compensated at no cost to you, the reader. This helps support our research and writing. Two popular choices in the Software defined Radio (SDR) market are RTL-SDR and Airspy, each with its distinct features and user base. This article provides an in-depth comparison of these … Read more

Software Defined Radio SDR Transmitter

A Software Defined Radio (SDR) transmitter is a type of radio communication system (traditionally implemented in hardware with mixers, filters, modulators, etc.) that is implemented either in software or digitally. While a traditional radio relies on physical components to process radio signals, an SDR uses software to perform these functions. The advantage is that they … Read more

RTL-SDR V4 vs V3

The RTL-SDR Version 4 was introduced late 2023. It is one of the most popular Software-defined Radio dongles. In this post we compare the RTL-SDR V4 to RTL-SDR V3. What are the improvements and should you upgrade? Frequency Range and Receiver Architecture The frequency range of both V3 and V4 are 500 kHz to 1.7 … Read more

Best Portable SDR (Software Defined Radios)

Portable Handheld Software Defined Radio (SDR) is a game-changer in radio communication. SDR uses software to do what used to need lots of different radio hardware. This means with just one device, you can listen to a wide range of radio signals. It’s great for amateur radio, hobbyists, and researchers. They can explore many frequencies … Read more