GL-X3000 with External Antenna

[packetmonkey]

Yes. Please refer to this post for instructions:

GL-X3000 and 2x2 MIMO antenna

You can connect this Proxicast antenna to the X3000 MAIN and DIV Cellular antenna connectors, and still keep the other two Cellular antenna connectors (MIMO1 and MIMO2) with the original paddle antennas. The reason is LTE signal only uses MAIN and DIV two antennas, but 5GNR signal must use four antennas in some cases.