Mobile Main and AUX Antennas

In Teltonika networking devices, one mobile antenna connector is "MAIN", while the another one is "AUX".

Depending on what technology (3G/4G) is used to connect to the mobile network provider, "AUX" antenna performs a different role:

• When "3G" technology is used, "AUX" antenna is used as "diversity antenna" for error correction. Its effects are mostly noticeable in poor mobile signal strength areas.

• When "4G (LTE)" technology is used, "AUX" antenna is used both as diversity antenna and as a secondary receiving antenna, increasing data connection quality and overall mobile download speed of the device.

• When "5G" technology is used, all of the router’s antennas function as main antennas. Normally, the middle SMA ports (ANT1 and ANT2) are used for diversity reception, while ANT0 and ANT3 are used for transmit/receive (TRX).

We recommend you to always have all mobile antennas connected for the best performance. However, if the situation does not allow you to use both mobile antennas (e.g. if the router is mounted in tight space where there is only enough space for one or two antennas), then "MAIN" mobile antenna connector should be used, or ANT0 and ANT3 for a 5G devices.