Waterproof GPS Antenna with Magnetic Base - 28dB - 3-5V - SMA Connector and Adapter Included - ozzmaker.com
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GPS Embedded Antenna SMA - GPS-00177 - SparkFun Electronics
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Low priced GPS patch antenna
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Amazon.com: Waterproof GPS Active Antenna 28dB Gain, 3-5VDC, SMA : Electronics