Amazon.com: 4G/3G LTE Antenna, 28dbi High Gain 4G 3G Network Ethernet Outdoor Signal Amplifier for WiFi Router Mobile for Huawei E398/E3276/E392(SMA Male) : Electronics
3M 2G 3G 4G LTE Router Modem Aerial External Antenna With TS9 / CRC9 / SMA Connector Cable For Huawei ZTE 4G LTE Antenna - AliExpress
How to connect a HUAWEI B535 Router to a Poynting external antenna? - YouTube