The Pololu LS20031 is a high-sensitivity, 66-channel GPS receiver with a MT3339 chip. The LS20031 incorporates modern technologies, such as an integrated low-noise amplifier, on-board voltage regulator, and an ultra-low power mode, to provide excellent navigation performance in challenging environments. It features a small, lightweight form factor and requires no external components, making it perfect for high-precision GPS and tracking applications. The LS20031 is compatible with all major satellite navigation systems, including GPS (USA), GLONASS (Russia), Galileo (Europe), and QZSS (Japan). It has high-sensitivity levels of -161 dBm, making it ideal for navigation even in difficult conditions, such as high altitude and dense urban environments.