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A 4G modem like Huawei E8372 with external antenna socket, and then externa MIMO antenna which you put on the roof. Just make sure it's MIMO antenna — dual cable with two plugs.
A 4G modem like Huawei E8372 with external antenna socket, and then externa MIMO antenna which you put on the roof. Just make sure it's MIMO antenna — dual cable with two plugs.