Hello all, I'm using two WiFi module Compex WLE600V5-27 http://www.compex.com.sg/product/wle600v5-27/ capable of 2x2 MIMO on two boards (Gateworks ventana 5410) using ath10k drivers. The chipset is the Qualcomm-Atheros QCA9882 but I didn't find a firmware for this chipset, so I'm using the QCA988X. Everithing worked fine until I tried to plug 2 antennas in both cards in order to make some data-rate tests. Even if there are two antennas plugged in, there aren't any changes in the data-rate measured between using one or two antennas. Sniffing the channel I sow that the Number of STBC streams is 1 and iw list shows that only 1 spatial stream is supported (but the card is capable of managing 2 spatial streams): Wiphy phy0 Band 1: Capabilities: 0x19e3 RX LDPC HT20/HT40 Static SM Power Save RX HT20 SGI RX HT40 SGI TX STBC RX STBC 1-stream Max AMSDU length: 7935 bytes DSSS/CCK HT40 Maximum RX AMPDU length 65535 bytes (exponent: 0x003) Minimum RX AMPDU time spacing: 8 usec (0x06) HT TX/RX MCS rate indexes supported: 0-15 Frequencies: * 5180 MHz [36] (17.0 dBm) * 5200 MHz [40] (17.0 dBm) ... Available Antennas: TX 0x3 RX 0x3 Configured Antennas: TX 0x3 RX 0x3 Supported interface modes: * managed * AP * AP/VLAN * monitor * mesh point I tried the tests both on channel 48 HT40- and 149 HT40+. The RSSI measured with iw station dump lays around -40dBm Is it an issue related to the firmware in use? Or maybe there aren't the right conditions to have MIMO working? Thanks in advence All the best Matteo
