The goal of this program is to fabricate and demonstrate a Spectroscopic Personal Radiation Detector (SPRD) based on semiconductor sensors, TlBr for gamma detection and LiInSe2 (LIS) for neutron detection. These compact SPRDs will meet or exceed ANSI 42.48 requirements at a low cost. The SPRDs will also have directional capabilities resulting in faster localization of the radiation threat. In phase I of this program, we will demonstrate a benchtop prototype of this system and determine the optimal design of the SPRDs to be fabricated in Phase II.