diff --git a/sa_core.c b/sa_core.c
index c9d7ad9..090d55a 100644
--- a/sa_core.c
+++ b/sa_core.c
@@ -1578,7 +1578,7 @@ float perform(bool break_on_operation, int i, uint32_t f, int tracking)     // M
         t_mode = T_UP_MASK;
       else
         t_mode = T_DOWN_MASK;
-
+      uint32_t count = 32;
       uint32_t additional_delay = 0;// reduce noise
       if (setting.sweep_time_us >= 100*ONE_MS_TIME) additional_delay = 20;
       do{                                                 // wait for trigger to happen
@@ -1591,6 +1591,11 @@ float perform(bool break_on_operation, int i, uint32_t f, int tracking)     // M
         data_level = ((data_level<<1) | (pureRSSI < trigger_lvl ? T_LEVEL_BELOW : T_LEVEL_ABOVE))&(T_LEVEL_CLEAN);
         if (data_level == t_mode)  // wait trigger
           break;
+        // DIRTY HACK!!! FIX ME HERE
+        // not get data after dirty = true apply in code at first run!!!!
+        if (pureRSSI == 0 && --count == 0)
+          break;
+
         if (additional_delay)
           my_microsecond_delay(additional_delay);
       }while(1);