diff --git a/openrtx/src/core/voicePrompts.c b/openrtx/src/core/voicePrompts.c
index e7ae59eb..856fa60e 100644
--- a/openrtx/src/core/voicePrompts.c
+++ b/openrtx/src/core/voicePrompts.c
@@ -545,6 +545,7 @@ void vp_beep(uint16_t freq, uint16_t duration)
         duration=2000; 
     
     currentBeepDuration=duration;
+    audio_enableAmp();
     
     platform_beepStart(freq);
     // See BeepTick for termination.
diff --git a/platform/targets/MD-UV3x0/platform.c b/platform/targets/MD-UV3x0/platform.c
index 0783dde5..180522f2 100644
--- a/platform/targets/MD-UV3x0/platform.c
+++ b/platform/targets/MD-UV3x0/platform.c
@@ -184,13 +184,12 @@ void platform_ledOff(led_t led)
 
 void platform_beepStart(uint16_t freq)
 {
-    /* TODO */
-    (void) freq;
+    toneGen_beepOn((float)freq, 255, 0);
 }
 
 void platform_beepStop()
 {
-    /* TODO */
+    toneGen_beepOff();
 }
 
 const void *platform_getCalibrationData()