HydraSDR is a soon to be released software-defined radio based on the same design as the popular Airspy R2 SDR. However, compared to Airspy, HydraSDR claims to have 'Enhanced PCB layout and RF front end with superior power/noise filtering, improved temperature dissipation and peak temperature management,' as well as various other improvements. HydraSDR also has the distinction of being made in the USA, whereas Airspy is made in China. Recently, Benjamin Vernoux, creator of HydraSDR and former collaborator on the Airspy R2 project, sent us a review unit of the HydraSDR. This post is a review of the HydraSDR. However,