diff --git a/openair2/LAYER2/NR_MAC_gNB/config.c b/openair2/LAYER2/NR_MAC_gNB/config.c
index bd6a8f3384..d9ca0ad009 100644
--- a/openair2/LAYER2/NR_MAC_gNB/config.c
+++ b/openair2/LAYER2/NR_MAC_gNB/config.c
@@ -275,7 +275,7 @@ void config_common(int Mod_idP, int pdsch_AntennaPorts, NR_ServingCellConfigComm
     num_ssb += (cfg->ssb_table.ssb_mask_list[1].ssb_mask.value>>i)&1;
   } 
 
-  cfg->carrier_config.num_rx_ant.value = cfg->carrier_config.num_tx_ant.value;
+  cfg->carrier_config.num_rx_ant.value = 1; //cfg->carrier_config.num_tx_ant.value;
   cfg->carrier_config.num_rx_ant.tl.tag = NFAPI_NR_CONFIG_NUM_RX_ANT_TAG;
   LOG_I(MAC,"Set TX/RX antenna number to %d (num ssb %d: %x,%x)\n",cfg->carrier_config.num_tx_ant.value,num_ssb,cfg->ssb_table.ssb_mask_list[0].ssb_mask.value,cfg->ssb_table.ssb_mask_list[1].ssb_mask.value);
   AssertFatal(cfg->carrier_config.num_tx_ant.value > 0,"carrier_config.num_tx_ant.value %d !\n",cfg->carrier_config.num_tx_ant.value );
diff --git a/targets/PROJECTS/GENERIC-LTE-EPC/CONF/gnb.band78.tm1.106PRB.usrpn300.conf b/targets/PROJECTS/GENERIC-LTE-EPC/CONF/gnb.band78.tm1.106PRB.usrpn300.conf
index 8ad31635b2..f83b082211 100644
--- a/targets/PROJECTS/GENERIC-LTE-EPC/CONF/gnb.band78.tm1.106PRB.usrpn300.conf
+++ b/targets/PROJECTS/GENERIC-LTE-EPC/CONF/gnb.band78.tm1.106PRB.usrpn300.conf
@@ -241,7 +241,7 @@ RUs = (
     {		  
        local_rf       = "yes"
          nb_tx          = 4
-         nb_rx          = 4
+         nb_rx          = 1
          att_tx         = 0
          att_rx         = 0;
          bands          = [7];
@@ -253,7 +253,7 @@ RUs = (
          ##beamforming 1x4 matrix: 1 layer x 4 antennas
          #bf_weights = [0x00007fff, 0x0000,0x0000, 0x0000];
          ## beamforming 2x2 matrix:
-          bf_weights = [0x00007fff, 0x00000000, 0x00000000, 0x00007fff];
+         # bf_weights = [0x00007fff, 0x00000000, 0x00000000, 0x00007fff];
          ## beamforming 4x4 matrix:
          bf_weights = [0x00007fff, 0x0000, 0x0000, 0x0000, 0x00000000, 0x00007fff, 0x0000, 0x0000, 0x0000, 0x0000, 0x00007fff, 0x0000, 0x0000, 0x0000, 0x0000, 0x00007fff];