diff --git a/radio/src/pulses/pulses.cpp b/radio/src/pulses/pulses.cpp
index 3adb49818..8f58f2b55 100755
--- a/radio/src/pulses/pulses.cpp
+++ b/radio/src/pulses/pulses.cpp
@@ -451,7 +451,7 @@ bool setupPulsesInternalModule(uint8_t protocol)
       }
       else {
 #if defined(INTMODULE_HEARTBEAT)
-        scheduleNextMixerCalculation(INTERNAL_MODULE, PXX2_PERIOD + 1 /* backup */);
+        scheduleNextMixerCalculation(INTERNAL_MODULE, PXX2_PERIOD + 2 /* backup */);
 #else
         scheduleNextMixerCalculation(INTERNAL_MODULE, PXX2_PERIOD);
 #endif
diff --git a/radio/src/pulses/pxx.h b/radio/src/pulses/pxx.h
index 70a5ae8c8..5d0bfaf05 100644
--- a/radio/src/pulses/pxx.h
+++ b/radio/src/pulses/pxx.h
@@ -29,7 +29,7 @@
 
 #define PXX2_LOWSPEED_BAUDRATE             230400
 #define PXX2_HIGHSPEED_BAUDRATE            450000
-#define PXX2_PERIOD                        50 // 4ms
+#define PXX2_PERIOD                        4 // 4ms
 #define PXX2_TOOLS_PERIOD                  1 // 1ms
 #define PXX2_FRAME_MAXLENGTH               64