diff --git a/cmake_targets/build_oai b/cmake_targets/build_oai
index 7b32ebf216..86d6d38d05 100755
--- a/cmake_targets/build_oai
+++ b/cmake_targets/build_oai
@@ -449,7 +449,7 @@ function main() {
   ########################################################
   # to be discussed
   
-  if [ "$eNB" = "1" -o "$gNB" = "1" =o "$RU" = "1"] ; then
+  if [ "$eNB" = "1" -o "$gNB" = "1" -o "$RU" = "1" ] ; then
       if [ "$HW" = "None" -a  "$TP" = "None" ] ; then
 	      echo_info "No local radio head and no transport protocol selected"
       fi
diff --git a/executables/main_ru.c b/executables/main_ru.c
index 2be1a93921..f98ea602c1 100644
--- a/executables/main_ru.c
+++ b/executables/main_ru.c
@@ -76,8 +76,6 @@ uint16_t sf_ahead = 4;
 RU_t ru_m;
 
 
-static int DEFBANDS[] = {7};
-
 void init_RU0(RU_t *ru,int ru_id,char *rf_config_file, int send_dmrssync);
 
 void exit_function(const char *file, const char *function, const int line, const char *s) {
@@ -163,16 +161,6 @@ int main ( int argc, char **argv )
   
 
   RU_t *ru=&ru_m;
-  init_RU0(ru,0,get_softmodem_params()->rf_config_file,get_softmodem_params()->send_dmrs_sync);
-  ru->rf_map.card=0;
-  ru->rf_map.chain=(get_softmodem_params()->chain_offset);
-  
-  LOG_I(PHY, "Initializing RRU descriptor %d : (%s,%s,%d)\n", ru_id, ru_if_types[ru->if_south], NB_timing[ru->if_timing], ru->function);
-  set_function_spec_param(ru);
-  LOG_I(PHY, "Starting ru_thread %d, is_slave %d, send_dmrs %d\n", ru_id, ru->is_slave, ru->generate_dmrs_sync);
-  init_RU_proc(ru);
-
-  config_sync_var=0;
 
   paramdef_t RUParams[] = RUPARAMS_DESC;
   paramlist_def_t RUParamList = {CONFIG_STRING_RU_LIST,NULL,0};
@@ -323,7 +311,24 @@ int main ( int argc, char **argv )
 
 
   mlockall(MCL_CURRENT | MCL_FUTURE);
-  
+  pthread_cond_init(&sync_cond,NULL);
+  pthread_mutex_init(&sync_mutex, NULL);
+ 
+  init_RU0(ru,0,get_softmodem_params()->rf_config_file,get_softmodem_params()->send_dmrs_sync);
+  ru->rf_map.card=0;
+  ru->rf_map.chain=(get_softmodem_params()->chain_offset);
+
+  LOG_I(PHY, "Initializing RRU descriptor : (%s,%s,%d)\n", ru_if_types[ru->if_south], NB_timing[ru->if_timing], ru->function);
+  set_function_spec_param(ru);
+  LOG_I(PHY, "Starting ru_thread , is_slave %d, send_dmrs %d\n", ru->is_slave, ru->generate_dmrs_sync);
+  init_RU_proc(ru);
+
+  config_sync_var=0;
+  pthread_mutex_lock(&sync_mutex);
+  sync_var=0;
+  pthread_cond_broadcast(&sync_cond);
+  pthread_mutex_unlock(&sync_mutex);
+ 
   while (oai_exit==0) sleep(1);
   // stop threads
       
diff --git a/targets/RT/USER/lte-ru.c b/targets/RT/USER/lte-ru.c
index 206f29a28e..b1d8867ecc 100644
--- a/targets/RT/USER/lte-ru.c
+++ b/targets/RT/USER/lte-ru.c
@@ -533,7 +533,7 @@ void fh_if4p5_north_asynch_in(RU_t *ru,
   LOG_D(PHY,"RU %d/%d TST %llu, frame %d, subframe %d\n",ru->idx,0,(long long unsigned int)proc->timestamp_tx,frame_tx,tti_tx);
 
   // dump VCD output for first RU in list
-  if (ru == RC.ru[0]) {
+  if (ru->idx == 0) {
     /*VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME( VCD_SIGNAL_DUMPER_VARIABLES_FRAME_NUMBER_TX0_RU, frame_tx );
     VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME( VCD_SIGNAL_DUMPER_VARIABLES_TTI_NUMBER_TX0_RU, tti_tx );*/
     VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME(VCD_SIGNAL_DUMPER_VARIABLES_FRAME_NUMBER_IF4P5_NORTH_ASYNCH_IN, frame_tx);
@@ -729,7 +729,7 @@ void rx_rf(RU_t *ru,
           proc->tti_rx);
 
     // dump VCD output for first RU in list
-    if (ru == RC.ru[0]) {
+    if (ru->idx == 0) {
       VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME( VCD_SIGNAL_DUMPER_VARIABLES_FRAME_NUMBER_RX0_RU, proc->frame_rx );
       VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME( VCD_SIGNAL_DUMPER_VARIABLES_TTI_NUMBER_RX0_RU, proc->tti_rx );
 
@@ -1730,8 +1730,10 @@ static void *ru_thread( void *param ) {
 
     // wait to be woken up
     if (ru->function!=eNodeB_3GPP && ru->has_ctrl_prt == 1) {
+      LOG_I(PHY,"Waiting for control thread to say go\n");
       if (wait_on_condition(&ru->proc.mutex_ru,&ru->proc.cond_ru_thread,&ru->proc.instance_cnt_ru,"ru_thread")<0) break;
-    } else wait_sync("ru_thread");
+    } else wait_sync("ru_thread"); 
+    LOG_I(PHY,"Got start from control thread\n");
 
     if(!(get_softmodem_params()->emulate_rf)) {
       if (ru->is_slave == 0) AssertFatal(ru->state == RU_RUN,"ru-%d state = %s != RU_RUN\n",ru->idx,ru_states[ru->state]);
@@ -1759,7 +1761,7 @@ static void *ru_thread( void *param ) {
     // if this is a slave RRU, try to synchronize on the DL frequency
     if ((ru->is_slave == 1) && (ru->if_south == LOCAL_RF)) do_ru_synch(ru);
 
-    LOG_D(PHY,"Starting steady-state operation\n");
+    LOG_I(PHY,"Starting steady-state operation\n");
 
     // This is a forever while loop, it loops over subframes which are scheduled by incoming samples from HW devices
     while (ru->state == RU_RUN || ru->state == RU_CHECK_SYNC) {
diff --git a/targets/RT/USER/ru_control.c b/targets/RT/USER/ru_control.c
index 6daf0f4dfa..afe16768b9 100644
--- a/targets/RT/USER/ru_control.c
+++ b/targets/RT/USER/ru_control.c
@@ -84,7 +84,7 @@
 
 int attach_rru(RU_t *ru);
 void configure_ru(int idx, void *arg);
-void configure_rru(int idx, void *arg);
+void configure_rru(RU_t *ru, void *arg);
 void fill_rf_config(RU_t *ru, char *rf_config_file);
 void* ru_thread_control( void* param );
 
@@ -335,7 +335,7 @@ int connect_rau(RU_t *ru)
 	    ((RRU_config_t *)&rru_config_msg.msg[0])->prach_FreqOffset[0],
 	    ((RRU_config_t *)&rru_config_msg.msg[0])->prach_ConfigIndex[0]);
       
-      configure_rru(ru->idx,
+      configure_rru(ru,
 		    (void*)&rru_config_msg.msg[0]);
       configuration_received = 1;
     }
@@ -440,11 +440,10 @@ void configure_ru(int idx,
   phy_init_RU(ru);
 }
 
-void configure_rru(int idx,
+void configure_rru(RU_t *ru,
                    void *arg)
 {
   RRU_config_t *config = (RRU_config_t *)arg;
-  RU_t         *ru     = RC.ru[idx];
 
   ru->frame_parms->eutra_band                                               = config->band_list[0];
   ru->frame_parms->dl_CarrierFreq                                           = config->tx_freq[0];
@@ -603,7 +602,7 @@ void* ru_thread_control( void* param )
 		      ((RRU_config_t *)&rru_config_msg.msg[0])->prach_ConfigIndex[0]);
 	      
 		ru->frame_parms = calloc(1, sizeof(*ru->frame_parms));
-		configure_rru(ru->idx, (void*)&rru_config_msg.msg[0]);
+		configure_rru(ru, (void*)&rru_config_msg.msg[0]);
 
  					  
 		fill_rf_config(ru,ru->rf_config_file);