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The S4-0606 from Locosys is a GPS/GNSS Module with Frequency 1575.42 MHz, Supply Voltage 1.71 to 1.89 V, Tracking Sensitivity up to -163 dBm, Cold Start Sensitivity up to -148 dBm, Current 30 to 80 mA. More details for S4-0606 can be seen below.
High Sensitivity standalone GNSS Modules
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