diff --git a/src/ATC/ATC.cxx b/src/ATC/ATC.cxx
index 8634de024..955cb8195 100644
--- a/src/ATC/ATC.cxx
+++ b/src/ATC/ATC.cxx
@@ -51,6 +51,8 @@ FGATC::FGATC() {
 	_transmitting = false;
 	_counter = 0.0;
 	_max_count = 5.0;
+	
+	_voiceOK = false;
 }
 
 FGATC::~FGATC() {
@@ -105,8 +107,9 @@ void FGATC::Update(double dt) {
 		//cout << "Transmission = " << pending_transmission << '\n';
 		if(_display) {
 			//Render(pending_transmission, ident, false);
+			Render(pending_transmission);
 			// At the moment Render only works for ATIS
-			globals->get_ATC_display()->RegisterSingleMessage(pending_transmission);
+			//globals->get_ATC_display()->RegisterSingleMessage(pending_transmission);
 		}
 		// Run the callback regardless of whether on same freq as user or not.
 		//cout << "_callback_code = " << _callback_code << '\n';
@@ -179,8 +182,9 @@ void FGATC::ImmediateTransmit(int callback_code) {
 	SG_LOG(SG_ATC, SG_INFO, "Immediate transmit called by " << ident << " " << _type << ", msg = " << pending_transmission);
 	if(_display) {
 		//Render(pending_transmission, ident, false);
+		Render(pending_transmission);
 		// At the moment Render doesn't work except for ATIS
-		globals->get_ATC_display()->RegisterSingleMessage(pending_transmission);
+		//globals->get_ATC_display()->RegisterSingleMessage(pending_transmission);
 	}
 	if(callback_code) {
 		ProcessCallback(callback_code);
@@ -217,11 +221,11 @@ void FGATC::SetData(ATCData* d) {
 // The repeating flag indicates whether the message should be repeated continuously or played once.
 void FGATC::Render(string msg, string refname, bool repeating) {
 	#ifdef ENABLE_AUDIO_SUPPORT
-	voice = (voiceOK && fgGetBool("/sim/sound/voice"));
-	if(voice) {
+	_voice = (_voiceOK && fgGetBool("/sim/sound/voice"));
+	if(_voice) {
 		int len;
-		unsigned char* buf = vPtr->WriteMessage((char*)msg.c_str(), len, voice);
-		if(voice) {
+		unsigned char* buf = _vPtr->WriteMessage((char*)msg.c_str(), len, _voice);
+		if(_voice) {
 			SGSoundSample *simple
                             = new SGSoundSample(buf, len, 8000, false);
 			// TODO - at the moment the volume is always set off comm1 
@@ -237,23 +241,27 @@ void FGATC::Render(string msg, string refname, bool repeating) {
 		delete[] buf;
 	}
 	#endif	// ENABLE_AUDIO_SUPPORT
-	if(!voice) {
+	if(!_voice) {
 		// first rip the underscores and the pause hints out of the string - these are for the convienience of the voice parser
 		for(unsigned int i = 0; i < msg.length(); ++i) {
 			if((msg.substr(i,1) == "_") || (msg.substr(i,1) == "/")) {
 				msg[i] = ' ';
 			}
 		}
-		globals->get_ATC_display()->RegisterRepeatingMessage(msg);
+		if(repeating) {
+			globals->get_ATC_display()->RegisterRepeatingMessage(msg);
+		} else {
+			globals->get_ATC_display()->RegisterSingleMessage(msg);
+		}
 	}
-	playing = true;	
+	_playing = true;	
 }
 
 
 // Cease rendering a transmission.
 void FGATC::NoRender(string refname) {
-	if(playing) {
-		if(voice) {
+	if(_playing) {
+		if(_voice) {
 			#ifdef ENABLE_AUDIO_SUPPORT		
 			globals->get_soundmgr()->stop(refname);
 			globals->get_soundmgr()->remove(refname);
@@ -261,7 +269,7 @@ void FGATC::NoRender(string refname) {
 		} else {
 			globals->get_ATC_display()->CancelRepeatingMessage();
 		}
-		playing = false;
+		_playing = false;
 	}
 }
 
diff --git a/src/ATC/ATC.hxx b/src/ATC/ATC.hxx
index c6c689a8d..cd4ab84db 100644
--- a/src/ATC/ATC.hxx
+++ b/src/ATC/ATC.hxx
@@ -180,9 +180,9 @@ protected:
 	// Outputs the transmission either on screen or as audio depending on user preference
 	// The refname is a string to identify this sample to the sound manager
 	// The repeating flag indicates whether the message should be repeated continuously or played once.
-	void Render(string msg, string refname, bool repeating);
+	void Render(string msg, string refname = "", bool repeating = false);
 	
-	// Cease rendering a transmission.
+	// Cease rendering all transmission from this station.
 	// Requires the sound manager refname if audio, else "".
 	void NoRender(string refname);
 	
@@ -206,10 +206,10 @@ protected:
 	atc_type _type;
 	
 	// Rendering related stuff
-	bool voice;			// Flag - true if we are using voice
-	bool playing;		// Indicates a message in progress	
-	bool voiceOK;		// Flag - true if at least one voice has loaded OK
-	FGATCVoice* vPtr;
+	bool _voice;			// Flag - true if we are using voice
+	bool _playing;		// Indicates a message in progress	
+	bool _voiceOK;		// Flag - true if at least one voice has loaded OK
+	FGATCVoice* _vPtr;
 
 	string pending_transmission;	// derived classes set this string before calling Transmit(...)	
 	bool freqClear;		// Flag to indicate if the frequency is clear of ongoing dialog
diff --git a/src/ATC/ATCDialog.cxx b/src/ATC/ATCDialog.cxx
index 3946898f6..efcde15eb 100644
--- a/src/ATC/ATCDialog.cxx
+++ b/src/ATC/ATCDialog.cxx
@@ -404,6 +404,7 @@ void FGATCDialog::PopupCallback() {
 				//cout << "Doing callback...\n";
 				ATCMenuEntry a = atcmlist[atcDialogCommunicationOptions->getValue()];
 				atcptr->SetFreqInUse();
+				// This is the user's speech getting displayed.
 				globals->get_ATC_display()->RegisterSingleMessage(atcptr->GenText(a.transmission, a.callback_code));
 				_callbackPending = true;
 				_callbackTimer = 0.0;
diff --git a/src/ATC/ATCdisplay.hxx b/src/ATC/ATCdisplay.hxx
index 0734e446f..7b3ade925 100644
--- a/src/ATC/ATCdisplay.hxx
+++ b/src/ATC/ATCdisplay.hxx
@@ -56,7 +56,7 @@ private:
     bool rep_msg;		// Flag to indicate there is a repeating transmission to display
     bool change_msg_flag;	// Flag to indicate that the repeating message has changed
     double dsp_offset1;		// Used to set the correct position of scrolling display
-    double dsp_offset2;	
+    double dsp_offset2;
     string rep_msg_str;		// The repeating transmission to play
     atcMessageList msgList;
     atcMessageListIterator msgList_itr;
diff --git a/src/ATC/atis.cxx b/src/ATC/atis.cxx
index 5ed6940af..2a8780bbf 100644
--- a/src/ATC/atis.cxx
+++ b/src/ATC/atis.cxx
@@ -56,8 +56,8 @@ FGATIS::FGATIS() :
 	refname("atis")
 	//type(ATIS)
 {
-	vPtr = globals->get_ATC_mgr()->GetVoicePointer(ATIS);
-	voiceOK = (vPtr == NULL ? false : true);
+	_vPtr = globals->get_ATC_mgr()->GetVoicePointer(ATIS);
+	_voiceOK = (_vPtr == NULL ? false : true);
 	_type = ATIS;
 }
 
diff --git a/src/ATC/tower.cxx b/src/ATC/tower.cxx
index 05f09e0b2..e5b632f0b 100644
--- a/src/ATC/tower.cxx
+++ b/src/ATC/tower.cxx
@@ -508,7 +508,9 @@ void FGTower::Respond() {
 			}
 			trns += ConvertRwyNumToSpokenString(activeRwy);
 			if(_display) {
-				globals->get_ATC_display()->RegisterSingleMessage(trns, 0);
+				//globals->get_ATC_display()->RegisterSingleMessage(trns, 0);
+				pending_transmission = trns;
+				Transmit();
 			} else {
 				//cout << "Not displaying, trns was " << trns << '\n';
 			}
@@ -543,7 +545,9 @@ void FGTower::Respond() {
 				string trns = t->plane.callsign;
 				trns += " hold position";
 				if(_display) {
-					globals->get_ATC_display()->RegisterSingleMessage(trns, 0);
+					//globals->get_ATC_display()->RegisterSingleMessage(trns, 0);
+					pending_transmission = trns;
+					Transmit();
 				}
 				// TODO - add some idea of what traffic is blocking him.
 			}
@@ -581,7 +585,9 @@ void FGTower::Respond() {
 				t->clearedToLand = false;
 			}
 			if(_display && disp) {
-				globals->get_ATC_display()->RegisterSingleMessage(trns);
+				//globals->get_ATC_display()->RegisterSingleMessage(trns);
+				pending_transmission = trns;
+				Transmit();
 			}
 			t->finalAcknowledged = true;
 		} else if(t->rwyVacatedReported && !(t->rwyVacatedAcknowledged)) {
@@ -676,7 +682,9 @@ void FGTower::ProcessDownwindReport(TowerPlaneRec* t) {
 		}
 	}
 	if(_display) {
-		globals->get_ATC_display()->RegisterSingleMessage(trns);
+		//globals->get_ATC_display()->RegisterSingleMessage(trns);
+		pending_transmission = trns;
+		Transmit();
 	}
 	if(t->isUser) {
 		if(t->opType == TTT_UNKNOWN) t->opType = CIRCUIT;
@@ -708,7 +716,9 @@ void FGTower::ProcessRunwayVacatedReport(TowerPlaneRec* t) {
 	}
 	//cout << "trns = " << trns << '\n';
 	if(_display) {
-		globals->get_ATC_display()->RegisterSingleMessage(trns);
+		//globals->get_ATC_display()->RegisterSingleMessage(trns);
+		pending_transmission = trns;
+		Transmit();
 	}
 	RemoveFromRwyList(t->plane.callsign);
 	AddToVacatedList(t);
@@ -819,7 +829,9 @@ void FGTower::ClearHoldingPlane(TowerPlaneRec* t) {
 		timeSinceLastDeparture = 0.0;
 	}
 	if(_display) {
-		globals->get_ATC_display()->RegisterSingleMessage(trns, 0);
+		//globals->get_ATC_display()->RegisterSingleMessage(trns, 0);
+		pending_transmission = trns;
+		Transmit();
 	}
 	//cout << "Done ClearHoldingPlane " << endl;
 }