Here is an external antenna that helps improve your 3G/4G signal. The Proxicast 10 dBi Omni-Directional 3G/4G Antenna is ideal for AT&T, Verizon, and other carriers. It is compatible with various modems and gateways. It has a weather resistant design.
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This antenna comes with an integrated female connector. It connects to your cellular modem or router via a 50ohm coaxial cable.
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