Performance difference for 802.11AC with only one antenna on the Sterling 60?

The Sterling 60 has connectors for two antennas. What is the performance difference for 802.11AC with only one antenna? That is, a single antenna firmware version was mentioned for the Sterling 60 at a later date. How would that performance compare to the two antenna 60?  - Regarding performance difference between 1x1 and 2x2 MIMO:  We haven?t tested it yet.  Theoretically, 1x1 has half the throughput of 2x2, but you will also lose out on some TX and RX performance.  Typically, with 2x2 MIMO, the TX power is amplified thanks to 2x2 MIMO phase shifting.  Using single antenna you can expect 3dB loss in TX power which equates to half the TX performance vs using two antennas.  For 1x1 RX; the radio will only have one chance to receive a packet, whereas 2x2 gives the radio 2 chances to receive a packet.  With that said, to achieve max performance we recommend two antennas.  However single antenna does offer benefits such as lower power consumption and allow for a smaller form factor product.