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Optional external antenna to go with the GX LTE cellular modem
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Amazon.com: ZDTECH High Gain 10-12dBi External SMA Male/Dual SMA Male 3G 4G 5G LTE Omni Directional Outdoor Antenna for Mobile Cell Phone Cellular 4G/ LTE/5G Router Modem Gateway(698-4000 MHz) : Electronics
Hotspot Antenna Kit for NETGEAR LB1120 | AntennaGear