diff --git a/README.md b/README.md
index 8c821dd..d872460 100644
--- a/README.md
+++ b/README.md
@@ -3,7 +3,7 @@ The purpose of this project is to transfer data (pictures...) via a 2,7kHz SSB c
 Now also including RTTY mode.
 
 # this is work in progress
-Version 0.72
+Version 0.84
 Windows 10 (should work on Win7, not tested)
 linux Desktop PC, 
 Odroid SBC
diff --git a/hsmodem/distrubution.cpp b/hsmodem/distrubution.cpp
index 953d332..e2e4a09 100755
--- a/hsmodem/distrubution.cpp
+++ b/hsmodem/distrubution.cpp
@@ -67,6 +67,8 @@ void dist_function(void* param)
             // give all data sources the same priority
             if (++circ >= 5) circ = 0;
 
+            //printf("circ:%d\n", circ);
+
             int len = 0;
             switch (circ)
             {
@@ -88,6 +90,10 @@ void dist_function(void* param)
 
             if (len > 0) _sendToModulator(rxdata, len);
         }
+        else
+        {
+            sleep_ms(100);
+        }
     }
     printf("Distributor exits\n");