The TP-Link TL-MR6400 is compatible with external LTE antennas to improve signal strength and quality. There are several external LTE antennas on the market that can be used with this router. However, to select the best antenna for your specific use case, you should consider the technical specifications and requirements of the router.

The TP-Link TL-MR6400 has two SMA sockets for connecting external antennas. These SMA sockets are standard connectors for external antennas and are supported by most LTE antennas. To select a compatible antenna, make sure that the antenna has SMA connectors.

In addition, you should check the frequency bands that your mobile phone provider uses for LTE. Different antennas support different frequency bands. Make sure that the antenna you choose covers the frequency bands supported by your mobile phone provider.

It is advisable to familiarise yourself with the technical data sheets of the antennas and, if necessary, contact the manufacturer or dealer to ensure that the antenna is compatible with your router and meets your specific requirements.

Antennas with SMA connector (pin in connector) fit.