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Amazon.com: Hotspot Module, USB Wireless Multi-Mode Hotspot Expansion Board + Antenna + LED Screen + Case, Support D-Star / P25 Digital Mobile Radio UHF VHF, for Raspberry Pi 3 and for Raspberry
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Raspberry Pi Compute Module 4 Antenna Kit : ID 4793 : $5.00 : Adafruit Industries, Unique & fun DIY electronics and kits
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External antenna modifications for the Raspberry Pi 3 #piday #Raspberrypi @Raspberry_Pi « Adafruit Industries – Makers, hackers, artists, designers and engineers!
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