SDRplay RSPduo Dual Tuner 14-bit SDR Radio Board for Educational Application, Industrial Application, Scientific The SDRplay Dual Tuner Radio Board is a dual-tuner wideband full-featured 14-bit SDR which covers the entire RF spectrum from 1kHz to 2GHz giving 10MHz of spectrum visibility. Combined with the power of SDRuno software for Windows, you can simultaneously monitor two completely separate 2MHz bands of spectrum anywhere between 1kHz and 2GHz. The RSPduo provides three software selectable antenna inputs and clocking features ideally suited to industrial, scientific and educational applications. A documented API allows developers to create new demodulators or applications around the platform.