diff --git a/executables/nr-gnb.c b/executables/nr-gnb.c
index 78d898cd74..2960131227 100644
--- a/executables/nr-gnb.c
+++ b/executables/nr-gnb.c
@@ -415,9 +415,6 @@ int wakeup_txfh(PHY_VARS_gNB *gNB,gNB_L1_rxtx_proc_t *proc,int frame_tx,int slot
   RU_proc_t *ru_proc;
 
   int waitret,ret;
-  struct timespec wait;
-  wait.tv_sec=0;
-  wait.tv_nsec=10000000L;
  
 
 
@@ -484,10 +481,6 @@ int wakeup_tx(PHY_VARS_gNB *gNB,int frame_rx,int slot_rx,int frame_tx,int slot_t
 
   int ret;
  
-  struct timespec wait;
-  wait.tv_sec=0;
-  wait.tv_nsec=5000000L;
-  
   
   AssertFatal((ret = pthread_mutex_lock(&L1_proc_tx->mutex))==0,"mutex_lock returns %d\n",ret);
 
@@ -524,7 +517,6 @@ int wakeup_rxtx(PHY_VARS_gNB *gNB,RU_t *ru) {
   RU_proc_t *ru_proc=&ru->proc;
   int ret;
   int i;
-  struct timespec wait;
   
   AssertFatal((ret=pthread_mutex_lock(&proc->mutex_RU))==0,"mutex_lock returns %d\n",ret);
   for (i=0;i<gNB->num_RU;i++) {
@@ -546,9 +538,6 @@ int wakeup_rxtx(PHY_VARS_gNB *gNB,RU_t *ru) {
   }
 
 
-  wait.tv_sec=0;
-  wait.tv_nsec=5000000L;
-
   // wake up TX for subframe n+sl_ahead
   // lock the TX mutex and make sure the thread is ready
   AssertFatal((ret=pthread_mutex_lock(&L1_proc->mutex)) == 0,"mutex_lock returns %d\n", ret);
diff --git a/executables/nr-ru.c b/executables/nr-ru.c
index 6f173109cd..2510963eb0 100644
--- a/executables/nr-ru.c
+++ b/executables/nr-ru.c
@@ -1208,6 +1208,12 @@ static void *ru_thread_tx( void *param ) {
   int                i = 0;
   int                ret;
   
+  
+  if(ru->if_south == LOCAL_RF)
+  {
+    uhd_set_thread_prio();
+    LOG_I(PHY,"set ru_thread_tx uhd priority");
+  }
 
   wait_on_condition(&proc->mutex_FH1,&proc->cond_FH1,&proc->instance_cnt_FH1,"ru_thread_tx");
   printf( "ru_thread_tx ready\n");
diff --git a/targets/ARCH/COMMON/common_lib.c b/targets/ARCH/COMMON/common_lib.c
index c54ede53ec..058f9799e5 100644
--- a/targets/ARCH/COMMON/common_lib.c
+++ b/targets/ARCH/COMMON/common_lib.c
@@ -43,6 +43,8 @@
 int set_device(openair0_device *device) {
 
   switch (device->type) {
+
+printf("/////////////HW device type %s\n",device->type);
     
   case EXMIMO_DEV:
     LOG_I(HW,"[%s] has loaded EXPRESS MIMO device.\n",((device->host_type == RAU_HOST) ? "RAU": "RRU"));
@@ -95,34 +97,56 @@ int set_transport(openair0_device *device) {
   
 }
 typedef int(*devfunc_t)(openair0_device *, openair0_config_t *, eth_params_t *);
+//loader_shlibfunc_t shlib_fdesc[2];
+
 /* look for the interface library and load it */
 int load_lib(openair0_device *device, openair0_config_t *openair0_cfg, eth_params_t * cfg, uint8_t flag) {
   
-  loader_shlibfunc_t shlib_fdesc[2];
+  loader_shlibfunc_t shlib_fdesc[1];
   int ret=0;
   char *libname;
   if (flag == RAU_LOCAL_RADIO_HEAD) {
-	  if (getenv("RFSIMULATOR") != NULL) 
-     	  libname="rfsimulator";
-	  else 
+    if (getenv("RFSIMULATOR") != NULL) 
+      libname="rfsimulator";
+    else 
       libname=OAI_RF_LIBNAME;
       shlib_fdesc[0].fname="device_init";
-      shlib_fdesc[1].fname="uhd_set_thread_priority";
+      //shlib_fdesc[1].fname="uhd_set_thread_priority";
     } else {
       libname=OAI_TP_LIBNAME;
       shlib_fdesc[0].fname="transport_init";      
     } 
-  ret=load_module_shlib(libname,shlib_fdesc,2,NULL);
+  ret=load_module_shlib(libname,shlib_fdesc,1,NULL);
   if (ret < 0) {
        LOG_E(HW,"Library %s couldn't be loaded\n",libname);
   } else {
        ret=((devfunc_t)shlib_fdesc[0].fptr)(device,openair0_cfg,cfg);
-       uhd_set_thread_priority_fun = (set_prio_func_t)shlib_fdesc[1].fptr;
+       //uhd_set_thread_priority_fun = (set_prio_func_t)shlib_fdesc[1].fptr;
   }    
   return ret; 	       
 }
 
 
+void uhd_set_thread_prio(void) {
+  
+  loader_shlibfunc_t shlib_fdesc[1];
+  int ret = 0;
+
+  char *libname;
+  if (getenv("RFSIMULATOR") != NULL) 
+    libname="rfsimulator";
+  else 
+    libname=OAI_RF_LIBNAME;
+  shlib_fdesc[0].fname="uhd_set_thread_priority";
+  ret=load_module_shlib(libname,shlib_fdesc,1,NULL);
+  if (ret < 0) {
+    LOG_E(HW,"Library %s couldn't be loaded\n",libname);
+  } else {
+    (set_prio_func_t)shlib_fdesc[0].fptr();
+  }    
+  return ret; 	    
+  
+}
 
 int openair0_device_load(openair0_device *device, openair0_config_t *openair0_cfg) {
   
diff --git a/targets/ARCH/COMMON/common_lib.h b/targets/ARCH/COMMON/common_lib.h
index d8e8cd5d6f..a50480888c 100644
--- a/targets/ARCH/COMMON/common_lib.h
+++ b/targets/ARCH/COMMON/common_lib.h
@@ -445,7 +445,7 @@ int openair0_set_rx_frequencies(openair0_device *device, openair0_config_t *open
 #define gettid() syscall(__NR_gettid)
 /*@}*/
 
-  void uhd_set_thread_priority(void);
+  void uhd_set_thread_prio(void);
   typedef void(*set_prio_func_t)(void);
   set_prio_func_t uhd_set_thread_priority_fun;
 
diff --git a/targets/PROJECTS/GENERIC-LTE-EPC/CONF/gnb.band78.tm1.106PRB.usrpx300.conf b/targets/PROJECTS/GENERIC-LTE-EPC/CONF/gnb.band78.tm1.106PRB.usrpx300.conf
index be98106d1e..8b896fc58a 100644
--- a/targets/PROJECTS/GENERIC-LTE-EPC/CONF/gnb.band78.tm1.106PRB.usrpx300.conf
+++ b/targets/PROJECTS/GENERIC-LTE-EPC/CONF/gnb.band78.tm1.106PRB.usrpx300.conf
@@ -254,7 +254,7 @@ RUs = (
          max_pdschReferenceSignalPower = -27;
          max_rxgain                    = 114;
          eNB_instances  = [0];
-	 sdr_addrs = "addr=192.168.30.2";
+         sdr_addrs = "type=x300";
 
     }
 );  
diff --git a/targets/PROJECTS/GENERIC-LTE-EPC/CONF/gnb.band78.tm1.217PRB.usrpx300.conf b/targets/PROJECTS/GENERIC-LTE-EPC/CONF/gnb.band78.tm1.217PRB.usrpx300.conf
index 51910091f7..73f2214baf 100644
--- a/targets/PROJECTS/GENERIC-LTE-EPC/CONF/gnb.band78.tm1.217PRB.usrpx300.conf
+++ b/targets/PROJECTS/GENERIC-LTE-EPC/CONF/gnb.band78.tm1.217PRB.usrpx300.conf
@@ -254,7 +254,7 @@ RUs = (
          max_pdschReferenceSignalPower = -27;
          max_rxgain                    = 114;
          eNB_instances  = [0];
-	 sdr_addrs = "addr=192.168.30.2";
+	 sdr_addrs = "type=x300";
 
     }
 );