Is it necessary for me to use both antennas?
Two SMA connectors for RF antennas are present and marked with “Antenna” for main connection and Diversity” for MIMO (LTE) and diversity for 3G.
The additional antenna port “Diversity” is for Rx Diversity. Rx Diversity is designed to improve the quality of the downlink signal by essentially enabling the device to choose the best available signal. Rx diversity has been shown to improve signal quality. However, many customers decide to forego the expense of the second antenna and rely on one Rx signal.
Sixnet IndustrialPro and RAM LTE devices utilize 2x2 MIMO technologies. MIMO equals Multi-In/Multi- Out and is designed to improve the cellular signal and quality on both the down-link and up-link. MIMO for LTE works differently than Rx Diversity in that it utilizes two distinct Tx and Rx signals, which are intelligently combined to increase throughput where signal multipath is available. MIMO will increase throughput in areas where interference would otherwise cause throughput degradation. Our recommendation is that two antennas be used for optimal performance. A single antenna may be used, however with one antenna you will not receive full MIMO benefits and your antenna performance may not be optimized. It is up to the user to determine if two antennas are beneficial, as multi-path is determined by local topology.