diff --git a/openair1/PHY/INIT/nr_parms.c b/openair1/PHY/INIT/nr_parms.c
index 7fa39b1f9c..814177a86c 100644
--- a/openair1/PHY/INIT/nr_parms.c
+++ b/openair1/PHY/INIT/nr_parms.c
@@ -335,7 +335,7 @@ int nr_init_frame_parms_ue(NR_DL_FRAME_PARMS *fp,
   int     Ncp               = NORMAL;
 
   if(fp->nb_antennas_rx == 0)
-    fp->nb_antennas_rx = 4;
+    fp->nb_antennas_rx = 1;
   if(fp->nb_antennas_tx == 0)
     fp->nb_antennas_tx = 1;
 
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 f83b082211..25aa57b92c 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
@@ -23,7 +23,7 @@ gNBs =
     ////////// Physical parameters:
 
     ssb_SubcarrierOffset                                      = 0;
-    pdsch_AntennaPorts                                        = 4;
+    pdsch_AntennaPorts                                        = 1;
 
     servingCellConfigCommon = (
     {
@@ -240,7 +240,7 @@ L1s = (
 RUs = (
     {		  
        local_rf       = "yes"
-         nb_tx          = 4
+         nb_tx          = 1
          nb_rx          = 1
          att_tx         = 0
          att_rx         = 0;
@@ -255,7 +255,7 @@ RUs = (
          ## beamforming 2x2 matrix:
          # 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];
+         #bf_weights = [0x00007fff, 0x0000, 0x0000, 0x0000, 0x00000000, 0x00007fff, 0x0000, 0x0000, 0x0000, 0x0000, 0x00007fff, 0x0000, 0x0000, 0x0000, 0x0000, 0x00007fff];
 
          sdr_addrs = "addr=192.168.10.2,mgmt_addr=192.168.10.2,second_addr=192.168.20.2";
          clock_src = "external";