The Detector Duo is a dual frequency GPR for real time onsite detection of buried metallic and non metallic pipes and cables. The unit is based on a dual frequency antennae of 250MHz & 700MHz ; The 250MHz frequency is for scanning and providing high resolution images of deep targets while the 700MHz is for scanning and providing high resolution images of shallow targets. The Detector Duo therefore provides the ability to locate the exact position of pipes and cables by a single scan (instead of changing antennaes) - Saving time & increasing productivity. The unit also provides simultaneous display of both deep and shallow targets with extra soil penetration depth increasing detection performance and reducing possibility of operator error. The software provided by the system is extremely user friendly and allows the operator to view the image in multiple formats for precise identification. Also, the software provides the ability to mark the utility and type of utility in the image for future reference and also measure depth with accuracy.