GPS Antenna - External Active Antenna - 3-5V 28dB 5 Meter SMA : ID 960 : $19.95 : Adafruit Industries, Unique & fun DIY electronics and kits
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External Antenna | Adafruit Ultimate GPS | Adafruit Learning System
External GPS antenna for WatchMate Vision2 | Sea-Tech Systems
External GPS Antenna, Ceramics with Amplifier — KKSB Cases
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AvMap EKP IV (w/external GPS antenna and C-MAP card April 11 07) | eBay