diff --git a/afsk/main.c b/afsk/main.c
index fd98280b..2e07e6ae 100644
--- a/afsk/main.c
+++ b/afsk/main.c
@@ -1406,10 +1406,10 @@ void get_tlm_fox() {
 /**/
 //      while ((millis() - sampleTime) < (unsigned int)samplePeriod)
      int startSleep = millis();	    
-     if ((millis() - sampleTime) < ((unsigned int)frameTime - 250))  // was 100 500 for FSK
+     if ((millis() - sampleTime) < ((unsigned int)frameTime - 250))  // was 250 100 500 for FSK
         sleep(2.0); // 0.5);  // 25);  // initial period
-     while ((millis() - sampleTime) < ((unsigned int)frameTime - 250))  // was 100
-        sleep(0.25); // 25); // 0.5);  // 25);
+     while ((millis() - sampleTime) < ((unsigned int)frameTime - 250))  // was 250 100
+        sleep(0.1); // 25); // 0.5);  // 25);
 //        sleep((unsigned int)sleepTime);
 /**/