Huawei B310 - Installing external antennas

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2. Installing external antennas
You can install external antennas to improve signal reception. Please contact your
network service provider to purchase the antennas. If you only require one antenna,
plug it into the
socket.
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Turn off the router and unplug the power adapter before inst
alling any external
antennas.
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External antennas are only suitable for indoor use. Do not use external
antennas during thunderstorms.
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Only use external antennas provided by your network service provider.