The nuclear Radiation Detector is based on new cadmium zinc telluride crystals imprinted with a detection grid.  The coplanar grid is etched onto the surface of the CdZnTe semiconductor.  Charge-sensing preamplifiers and signal subtraction circuitry present a low-noise analog signal to the onboard threshold circuitry.  Either signal may be used depending on need.  The unit operates at industrial temperatures (unlike other detectors requiring gas-cooling) and operates on extremely low power.  A slightly larger version is available that includes signal processing for spectral and peak analysis.