diff --git a/core/dev/radio.h b/core/dev/radio.h
index b530f9c09..f4e6bdd09 100644
--- a/core/dev/radio.h
+++ b/core/dev/radio.h
@@ -96,6 +96,7 @@ enum {
   RADIO_TX_OK,
   RADIO_TX_ERR,
   RADIO_TX_COLLISION,
+  RADIO_TX_NOACK,
 };
 
 #endif /* __RADIO_H__ */
diff --git a/core/net/mac/nullrdc.c b/core/net/mac/nullrdc.c
index 1a7483e4c..6b8cbe2e3 100644
--- a/core/net/mac/nullrdc.c
+++ b/core/net/mac/nullrdc.c
@@ -42,6 +42,7 @@
 #include "net/mac/nullrdc.h"
 #include "net/packetbuf.h"
 #include "net/netstack.h"
+#include <string.h>
 
 #define DEBUG 0
 #if DEBUG
@@ -59,6 +60,14 @@
 #endif /* NULLRDC_CONF_802154_AUTOACK */
 #endif /* NULLRDC_802154_AUTOACK */
 
+#ifndef NULLRDC_802154_AUTOACK_HW
+#ifdef NULLRDC_CONF_802154_AUTOACK_HW
+#define NULLRDC_802154_AUTOACK_HW NULLRDC_CONF_802154_AUTOACK_HW
+#else
+#define NULLRDC_802154_AUTOACK_HW 0
+#endif /* NULLRDC_CONF_802154_AUTOACK_HW */
+#endif /* NULLRDC_802154_AUTOACK_HW */
+
 #if NULLRDC_802154_AUTOACK
 #include "sys/rtimer.h"
 #include "dev/watchdog.h"
@@ -66,7 +75,9 @@
 #define ACK_WAIT_TIME                      RTIMER_SECOND / 2500
 #define AFTER_ACK_DETECTED_WAIT_TIME       RTIMER_SECOND / 1500
 #define ACK_LEN 3
+#endif /* NULLRDC_802154_AUTOACK */
 
+#if NULLRDC_802154_AUTOACK || NULLRDC_802154_AUTOACK_HW
 struct seqno {
   rimeaddr_t sender;
   uint8_t seqno;
@@ -79,7 +90,7 @@ struct seqno {
 #endif /* NETSTACK_CONF_MAC_SEQNO_HISTORY */
 
 static struct seqno received_seqnos[MAX_SEQNOS];
-#endif /* NULLRDC_802154_AUTOACK */
+#endif /* NULLRDC_802154_AUTOACK || NULLRDC_802154_AUTOACK_HW */
 
 /*---------------------------------------------------------------------------*/
 static void
@@ -87,9 +98,9 @@ send_packet(mac_callback_t sent, void *ptr)
 {
   int ret;
   packetbuf_set_addr(PACKETBUF_ADDR_SENDER, &rimeaddr_node_addr);
-#if NULLRDC_802154_AUTOACK
+#if NULLRDC_802154_AUTOACK || NULLRDC_802154_AUTOACK_HW
   packetbuf_set_attr(PACKETBUF_ATTR_MAC_ACK, 1);
-#endif /* NULLRDC_802154_AUTOACK */
+#endif /* NULLRDC_802154_AUTOACK || NULLRDC_802154_AUTOACK_HW */
 
   if(NETSTACK_FRAMER.create() == 0) {
     /* Failed to allocate space for headers */
@@ -171,6 +182,9 @@ send_packet(mac_callback_t sent, void *ptr)
     case RADIO_TX_COLLISION:
       ret = MAC_TX_COLLISION;
       break;
+    case RADIO_TX_NOACK:
+      ret = MAC_TX_NOACK;
+      break;
     default:
       ret = MAC_TX_ERR;
       break;
@@ -193,7 +207,7 @@ packet_input(void)
   if(NETSTACK_FRAMER.parse() == 0) {
     PRINTF("nullrdc: failed to parse %u\n", packetbuf_datalen());
   } else {
-#if NULLRDC_802154_AUTOACK
+#if NULLRDC_802154_AUTOACK || NULLRDC_802154_AUTOACK_HW
     /* Check for duplicate packet by comparing the sequence number
        of the incoming packet with the last few ones we saw. */
     int i;
diff --git a/cpu/mc1322x/contiki-maca.c b/cpu/mc1322x/contiki-maca.c
index d90598673..886b15ac2 100644
--- a/cpu/mc1322x/contiki-maca.c
+++ b/cpu/mc1322x/contiki-maca.c
@@ -62,6 +62,7 @@
 #endif
 
 static volatile uint8_t tx_complete;
+static volatile uint8_t tx_status;
 
 /* contiki mac driver */
 
@@ -98,11 +99,11 @@ static process_event_t event_data_ready;
 static volatile packet_t prepped_p;
 
 int contiki_maca_init(void) {
-	trim_xtal();
-	vreg_init();
-	contiki_maca_init();
-	set_channel(0); /* channel 11 */
-	set_power(0x12); /* 0x12 is the highest, not documented */
+//	trim_xtal();
+//	vreg_init();
+//	contiki_maca_init();
+//	set_channel(0); /* channel 11 */
+//	set_power(0x12); /* 0x12 is the highest, not documented */
 	return 1;
 }
 
@@ -228,8 +229,6 @@ int contiki_maca_transmit(unsigned short transmit_len) {
 
 #if BLOCKING_TX
 	/* block until tx_complete, set by contiki_maca_tx_callback */
-	/* there are many places in contiki that rely on the */
-	/* transmit call to block */
  	while(!tx_complete && (tx_head != 0));
 #endif	
 }
@@ -237,7 +236,18 @@ int contiki_maca_transmit(unsigned short transmit_len) {
 int contiki_maca_send(const void *payload, unsigned short payload_len) {
 	contiki_maca_prepare(payload, payload_len);
 	contiki_maca_transmit(payload_len);
-	return RADIO_TX_OK;
+	switch(tx_status) {
+	case SUCCESS:
+	case CRC_FAILED: /* CRC_FAILED is usually an ack */
+		PRINTF("TXOK\n\r");
+		return RADIO_TX_OK;
+	case NO_ACK:
+		PRINTF("NOACK\n\r");
+		return RADIO_TX_NOACK;
+	default:
+		PRINTF("TXERR\n\r");
+		return RADIO_TX_ERR;
+	}
 }
 
 PROCESS(contiki_maca_process, "maca process");
@@ -254,12 +264,12 @@ PROCESS_THREAD(contiki_maca_process, ev, data)
 		/* check if there is a request to turn the radio on or off */
 		if(contiki_maca_request_on == 1) {
 			contiki_maca_request_on = 0;
-			maca_on();
+//			maca_on();
  		}
 
 		if(contiki_maca_request_off == 1) {
 			contiki_maca_request_off = 0;
-			maca_off();
+//			maca_off();
  		}
 
 		if (rx_head != NULL) {
@@ -270,6 +280,10 @@ PROCESS_THREAD(contiki_maca_process, ev, data)
 				NETSTACK_RDC.input();
 			}
 		}
+                /* Call ourself again to handle remaining packets in the queue */
+		if (rx_head != NULL) {
+			process_poll(&contiki_maca_process);
+		}
 		
  	};
 	
@@ -284,5 +298,6 @@ void maca_rx_callback(volatile packet_t *p __attribute((unused))) {
 #if BLOCKING_TX
 void maca_tx_callback(volatile packet_t *p __attribute((unused))) {
 	tx_complete = 1;
+	tx_status = p->status;
 }
 #endif
diff --git a/cpu/mc1322x/mc1322x.lds b/cpu/mc1322x/mc1322x.lds
index df3ca8895..2e6dddf75 100644
--- a/cpu/mc1322x/mc1322x.lds
+++ b/cpu/mc1322x/mc1322x.lds
@@ -18,7 +18,7 @@ FIQ_STACK_SIZE = 256;
 SVC_STACK_SIZE = 256;
 ABT_STACK_SIZE = 16;
 UND_STACK_SIZE = 16;
-HEAP_SIZE = 1024;
+HEAP_SIZE = 2048;
 
   /* Read-only sections, merged into text segment: */
   PROVIDE (__executable_start = 0x00400000); . = 0x00400000;
diff --git a/platform/redbee-econotag/contiki-conf.h b/platform/redbee-econotag/contiki-conf.h
index 6f9edc11e..0839607f9 100644
--- a/platform/redbee-econotag/contiki-conf.h
+++ b/platform/redbee-econotag/contiki-conf.h
@@ -84,7 +84,8 @@
 #define CONTIKI_MACA_RAW_MODE       0
 #define USE_32KHZ_XTAL              0
 
-#define BLOCKING_TX 0
+#define BLOCKING_TX 1
+#define NULLRDC_CONF_802154_AUTOACK_HW 1
 
 /* end of mc1322x specific config. */
 
diff --git a/platform/redbee-econotag/contiki-mc1322x-main.c b/platform/redbee-econotag/contiki-mc1322x-main.c
index 7d822d4bb..a8b53e6c4 100644
--- a/platform/redbee-econotag/contiki-mc1322x-main.c
+++ b/platform/redbee-econotag/contiki-mc1322x-main.c
@@ -66,7 +66,7 @@
 #include "contiki-maca.h"
 #include "contiki-uart.h"
 
-#define DEBUG 1
+#define DEBUG 0
 #if DEBUG
 #include <stdio.h>
 #define PRINTF(...) printf(__VA_ARGS__)
@@ -86,14 +86,6 @@
 #define RIMEADDR_NBYTES 8
 #endif
 
-#define PLATFORM_DEBUG 1
-#if PLATFORM_DEBUG
-#define PRINTF(...) printf(__VA_ARGS__)
-#else
-#define PRINTF(...)
-#endif
-
-
 #if UIP_CONF_ROUTER
 
 #ifndef UIP_ROUTER_MODULE
@@ -236,30 +228,27 @@ void iab_to_eui64(rimeaddr_t *eui64, uint32_t oui, uint16_t iab, uint32_t ext) {
 	eui64->u8[1] =  0x50;
 	eui64->u8[2] =  0xc2;
 
-	/* EUI64 field */
-	eui64->u8[3] = 0xff;
-	eui64->u8[4] = 0xfe;
-
 	/* IAB */
-	eui64->u8[5] = (iab >> 4)  & 0xff;	
-	eui64->u8[6] = (iab & 0xf) << 4;
+	eui64->u8[3] = (iab >> 4)  & 0xff;
+	eui64->u8[4] = (iab & 0xf) << 4;
 
 	/* EXT */
-	eui64->u8[6] |= ((ext >> 8) &  0xf);	
-	eui64->u8[7] =    ext       & 0xff;
+
+	eui64->u8[4] = (ext >> 24) & 0xff;
+	eui64->u8[5] = (ext >> 16) & 0xff;
+	eui64->u8[6] = (ext >> 8)  & 0xff;
+	eui64->u8[7] =  ext        & 0xff;
 }
 
-void oui_to_eui64(rimeaddr_t *eui64, uint32_t oui, uint32_t ext) {
+void oui_to_eui64(rimeaddr_t *eui64, uint32_t oui, uint64_t ext) {
 	/* OUI */
 	eui64->u8[0] = (oui >> 16) & 0xff;
 	eui64->u8[1] = (oui >> 8)  & 0xff;
 	eui64->u8[2] =  oui        & 0xff;
 
-	/* EUI64 field */
-	eui64->u8[3] = 0xff;
-	eui64->u8[4] = 0xfe;
-
 	/* EXT */
+	eui64->u8[3] = (ext >> 32) & 0xff;
+	eui64->u8[4] = (ext >> 24) & 0xff;
 	eui64->u8[5] = (ext >> 16) & 0xff;
 	eui64->u8[6] = (ext >> 8)  & 0xff;
 	eui64->u8[7] =  ext        & 0xff;
@@ -293,7 +282,7 @@ set_rimeaddr(rimeaddr_t *addr)
 	  	iab_to_eui64(&eui64, OUI, IAB, EXT_ID);
    #else  /* ifdef EXT_ID */
 		PRINTF("address in flash blank, setting to defined IAB with a random extension.\n\r");
-		iab_to_eui64(&eui64, OUI, IAB, *MACA_RANDOM & 0xfff);
+		iab_to_eui64(&eui64, OUI, IAB, *MACA_RANDOM);
    #endif /* ifdef EXT_ID */
 
 #else  /* ifdef IAB */
@@ -303,7 +292,7 @@ set_rimeaddr(rimeaddr_t *addr)
 		oui_to_eui64(&eui64, OUI, EXT_ID);
    #else  /*ifdef EXT_ID */
 		PRINTF("address in flash blank, setting to defined OUI with a random extension.\n\r");
-		oui_to_eui64(&eui64, OUI, *MACA_RANDOM & 0xffffff);
+		oui_to_eui64(&eui64, OUI, ((*MACA_RANDOM << 32) | *MACA_RANDOM));
    #endif /*endif EXTID */
 
 #endif /* ifdef IAB */
@@ -422,6 +411,27 @@ main(void)
          RF_CHANNEL);
 #endif /* WITH_UIP6 */
 
+  *MACA_MACPANID = 0xcdab; /* this is the hardcoded contiki pan, register is PACKET order */
+  *MACA_MAC16ADDR = 0xffff; /* short addressing isn't used, set this to 0xffff for now */
+
+  *MACA_MAC64HI =
+	  addr.u8[0] << 24 |
+	  addr.u8[1] << 16 |
+	  addr.u8[2] << 8 |
+	  addr.u8[3];
+  *MACA_MAC64LO =
+	  addr.u8[4] << 24 |
+	  addr.u8[5] << 16 |
+	  addr.u8[6] << 8 |
+	  addr.u8[7];
+  PRINTF("setting panid 0x%04x\n\r", *MACA_MACPANID);
+  PRINTF("setting short mac 0x%04x\n\r", *MACA_MAC16ADDR);
+  PRINTF("setting long mac 0x%08x_%08x\n\r", *MACA_MAC64HI, *MACA_MAC64LO);
+
+#if NULLRDC_CONF_802154_AUTOACK_HW
+  set_prm_mode(AUTOACK);
+#endif
+
 #if PROFILE_CONF_ON
   profile_init();
 #endif /* PROFILE_CONF_ON */
diff --git a/tools/cooja/apps/mrm/java/se/sics/mrm/AreaViewer.java b/tools/cooja/apps/mrm/java/se/sics/mrm/AreaViewer.java
index dc5d7020a..b90d6de0e 100644
--- a/tools/cooja/apps/mrm/java/se/sics/mrm/AreaViewer.java
+++ b/tools/cooja/apps/mrm/java/se/sics/mrm/AreaViewer.java
@@ -31,22 +31,79 @@
 
 package se.sics.mrm;
 
-import java.awt.*;
-import java.awt.event.*;
-import java.awt.geom.*;
+import java.awt.BasicStroke;
+import java.awt.BorderLayout;
+import java.awt.Color;
+import java.awt.Component;
+import java.awt.Container;
+import java.awt.Cursor;
+import java.awt.Dialog;
+import java.awt.Dimension;
+import java.awt.Frame;
+import java.awt.Graphics;
+import java.awt.Graphics2D;
+import java.awt.GraphicsEnvironment;
+import java.awt.GridLayout;
+import java.awt.Image;
+import java.awt.MediaTracker;
+import java.awt.Point;
+import java.awt.Rectangle;
+import java.awt.Toolkit;
+import java.awt.Window;
+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
+import java.awt.event.MouseAdapter;
+import java.awt.event.MouseEvent;
+import java.awt.event.MouseListener;
+import java.awt.event.MouseMotionListener;
+import java.awt.geom.AffineTransform;
+import java.awt.geom.Line2D;
 import java.awt.image.BufferedImage;
 import java.io.File;
 import java.net.URL;
 import java.text.DecimalFormat;
 import java.text.NumberFormat;
-import java.util.*;
-import javax.swing.*;
+import java.util.Collection;
+import java.util.Enumeration;
+import java.util.Observable;
+import java.util.Observer;
+import java.util.Random;
+import java.util.Vector;
+
+import javax.swing.AbstractButton;
+import javax.swing.BorderFactory;
+import javax.swing.Box;
+import javax.swing.BoxLayout;
+import javax.swing.ButtonGroup;
+import javax.swing.JButton;
+import javax.swing.JCheckBox;
+import javax.swing.JDialog;
+import javax.swing.JFileChooser;
+import javax.swing.JFormattedTextField;
+import javax.swing.JFrame;
+import javax.swing.JLabel;
+import javax.swing.JPanel;
+import javax.swing.JRadioButton;
+import javax.swing.JScrollPane;
+import javax.swing.JSeparator;
+import javax.swing.JSlider;
+import javax.swing.JToolTip;
+import javax.swing.Popup;
+import javax.swing.PopupFactory;
+import javax.swing.ProgressMonitor;
 import javax.swing.filechooser.FileFilter;
+
 import org.apache.log4j.Logger;
 import org.jdom.Element;
 
-import se.sics.cooja.*;
-import se.sics.cooja.interfaces.*;
+import se.sics.cooja.ClassDescription;
+import se.sics.cooja.GUI;
+import se.sics.cooja.PluginType;
+import se.sics.cooja.RadioConnection;
+import se.sics.cooja.Simulation;
+import se.sics.cooja.VisPlugin;
+import se.sics.cooja.interfaces.Position;
+import se.sics.cooja.interfaces.Radio;
 
 /**
  * The class AreaViewer belongs to the MRM package.
@@ -128,7 +185,7 @@ public class AreaViewer extends VisPlugin {
   private boolean inSelectMode = true;
   private boolean inTrackMode = false;
 
-  private Vector<Line2D> trackedComponents = null;
+  private ChannelModel.TrackedSignalComponents trackedComponents = null;
 
   // Coloring variables
   private JPanel coloringIntervalPanel = null;
@@ -148,6 +205,8 @@ public class AreaViewer extends VisPlugin {
 
   private JRadioButton noneButton = null;
 
+  private JRadioButton trackModeButton;
+  
   /**
    * Initializes an AreaViewer.
    *
@@ -196,12 +255,13 @@ public class AreaViewer extends VisPlugin {
     zoomModeButton.setActionCommand("set zoom mode");
     zoomModeButton.addActionListener(canvasModeHandler);
 
-    JRadioButton trackModeButton = new JRadioButton ("track rays");
+    trackModeButton = new JRadioButton ("track rays");
     trackModeButton.setAlignmentY(Component.BOTTOM_ALIGNMENT);
     trackModeButton.setContentAreaFilled(false);
     trackModeButton.setActionCommand("set track rays mode");
     trackModeButton.addActionListener(canvasModeHandler);
-
+    trackModeButton.setEnabled(false);
+    
     ButtonGroup group = new ButtonGroup();
     group.add(selectModeButton);
     group.add(panModeButton);
@@ -565,19 +625,36 @@ public class AreaViewer extends VisPlugin {
   /**
    * Listens to mouse event on canvas
    */
-  private MouseListener canvasMouseHandler = new MouseListener() {
+  private MouseAdapter canvasMouseHandler = new MouseAdapter() {
+    private Popup popUpToolTip = null;
+
     public void mouseReleased(MouseEvent e) {
+      if (popUpToolTip != null) {
+        popUpToolTip.hide();
+        popUpToolTip = null;
+      }
     }
-    public void mouseExited(MouseEvent e) {
-    }
-    public void mouseClicked(MouseEvent e) {
+
+    public void mousePressed(MouseEvent e) {
+      if (popUpToolTip != null) {
+        popUpToolTip.hide();
+        popUpToolTip = null;
+      }
+
+      /* Zoom & Pan */
+      lastHandledPosition = new Point(e.getX(), e.getY());
+      zoomCenterX = e.getX() / currentZoomX - currentPanX;
+      zoomCenterY = e.getY() / currentZoomY - currentPanY;
+      zoomCenterPoint = e.getPoint();
+
+      /* Select */
       if (inSelectMode) {
         Vector<Radio> hitRadios = trackClickedRadio(e.getPoint());
-
         if (hitRadios == null || hitRadios.size() == 0) {
           if (e.getButton() != MouseEvent.BUTTON1) {
             selectedRadio = null;
             channelImage = null;
+            trackModeButton.setEnabled(false);
             canvas.repaint();
           }
           return;
@@ -589,39 +666,47 @@ public class AreaViewer extends VisPlugin {
 
         if (selectedRadio == null || !hitRadios.contains(selectedRadio)) {
           selectedRadio = hitRadios.firstElement();
+          trackModeButton.setEnabled(true);
         } else {
-          // Select next in list
           selectedRadio = hitRadios.get(
               (hitRadios.indexOf(selectedRadio)+1) % hitRadios.size()
           );
+          trackModeButton.setEnabled(true);
         }
 
         channelImage = null;
         canvas.repaint();
-      } else if (inTrackMode && selectedRadio != null) {
-        // Calculate real clicked position
+        return;
+      }
+
+      /* Track */
+      if (inTrackMode && selectedRadio != null) {
         double realClickedX = e.getX() / currentZoomX - currentPanX;
         double realClickedY = e.getY() / currentZoomY - currentPanY;
 
-        Position radioPosition = currentRadioMedium.getRadioPosition(selectedRadio);
+        Position radioPosition = selectedRadio.getPosition();
         final double radioX = radioPosition.getXCoordinate();
         final double radioY = radioPosition.getYCoordinate();
 
         trackedComponents = currentChannelModel.getRaysOfTransmission(radioX, radioY, realClickedX, realClickedY);
-
         canvas.repaint();
+        
+        /* Show popup */
+        JToolTip t = AreaViewer.this.createToolTip();
+
+        String logHtml = 
+        	"<html>" + 
+        	trackedComponents.log.replace("\n", "<br>").replace(" pi", " &pi;") +
+        	"</html>";
+        t.setTipText(logHtml);
+        
+        if (t.getTipText() == null || t.getTipText().equals("")) {
+          return;
+        }
+        popUpToolTip = PopupFactory.getSharedInstance().getPopup(
+        		AreaViewer.this, t, e.getXOnScreen(), e.getYOnScreen());
+        popUpToolTip.show();
       }
-
-    }
-    public void mouseEntered(MouseEvent e) {
-    }
-    public void mousePressed(MouseEvent e) {
-      lastHandledPosition = new Point(e.getX(), e.getY());
-
-      // Set zoom center (real world)
-      zoomCenterX = e.getX() / currentZoomX - currentPanX;
-      zoomCenterY = e.getY() / currentZoomY - currentPanY;
-      zoomCenterPoint = e.getPoint();
     }
   };
 
@@ -1523,6 +1608,7 @@ public class AreaViewer extends VisPlugin {
       // Clear selected radio (if any selected) and radio medium coverage
       selectedRadio = null;
       channelImage = null;
+      trackModeButton.setEnabled(false);
       canvas.repaint();
     }
   };
@@ -1616,7 +1702,7 @@ public class AreaViewer extends VisPlugin {
         final double height = canvas.getHeight() / currentZoomY;
 
         // Get sending radio position
-        Position radioPosition = currentRadioMedium.getRadioPosition(selectedRadio);
+        Position radioPosition = selectedRadio.getPosition();
         final double radioX = radioPosition.getXCoordinate();
         final double radioY = radioPosition.getYCoordinate();
 
@@ -1990,7 +2076,7 @@ public class AreaViewer extends VisPlugin {
 
         // Translate to real world radio position
         Radio radio = currentRadioMedium.getRegisteredRadio(i);
-        Position radioPosition = currentRadioMedium.getRadioPosition(radio);
+        Position radioPosition = radio.getPosition();
         g2d.translate(
             radioPosition.getXCoordinate(),
             radioPosition.getYCoordinate()
@@ -2129,16 +2215,14 @@ public class AreaViewer extends VisPlugin {
       g2d.setStroke(new BasicStroke((float) 0.0));
 
       Random random = new Random(); /* Do not use main random generator */
-      for (int i=0; i < trackedComponents.size(); i++) {
+      for (Line2D l: trackedComponents.components) {
         g2d.setColor(new Color(255, random.nextInt(255), random.nextInt(255), 255));
-        Line2D originalLine = trackedComponents.get(i);
         Line2D newLine = new Line2D.Double(
-            originalLine.getX1()*100.0,
-            originalLine.getY1()*100.0,
-            originalLine.getX2()*100.0,
-            originalLine.getY2()*100.0
+            l.getX1()*100.0,
+            l.getY1()*100.0,
+            l.getX2()*100.0,
+            l.getY2()*100.0
         );
-
         g2d.draw(newLine);
       }
     }
@@ -2167,7 +2251,7 @@ public class AreaViewer extends VisPlugin {
 
     for (int i=0; i < currentRadioMedium.getRegisteredRadioCount(); i++) {
       Radio testRadio = currentRadioMedium.getRegisteredRadio(i);
-      Position testPosition = currentRadioMedium.getRadioPosition(testRadio);
+      Position testPosition = testRadio.getPosition();
 
       if (realClickedX > testPosition.getXCoordinate() - realIconHalfWidth &&
           realClickedX < testPosition.getXCoordinate() + realIconHalfWidth &&
diff --git a/tools/cooja/apps/mrm/java/se/sics/mrm/ChannelModel.java b/tools/cooja/apps/mrm/java/se/sics/mrm/ChannelModel.java
index 70032119c..0babcf6e2 100644
--- a/tools/cooja/apps/mrm/java/se/sics/mrm/ChannelModel.java
+++ b/tools/cooja/apps/mrm/java/se/sics/mrm/ChannelModel.java
@@ -33,6 +33,7 @@ package se.sics.mrm;
 
 import java.awt.geom.*;
 import java.util.*;
+
 import javax.swing.tree.DefaultMutableTreeNode;
 import org.apache.log4j.Logger;
 import org.jdom.Element;
@@ -65,9 +66,13 @@ public class ChannelModel {
 
   private ObstacleWorld myObstacleWorld = new ObstacleWorld();
 
+  /* Log mode: visualize signal components */
+  private boolean logMode = false;
+  private StringBuilder logInfo = null;
+  private ArrayList<Line2D> loggedRays = null;
+
+  
   // Ray tracing components temporary vector
-  private boolean inLoggingMode = false;
-  private Vector<Line2D> savedRays = null;
   private Vector<Vector<Line2D>> calculatedVisibleSides = new Vector<Vector<Line2D>>();
   private Vector<Point2D> calculatedVisibleSidesSources = new Vector<Point2D>();
   private Vector<Line2D> calculatedVisibleSidesLines = new Vector<Line2D>();
@@ -1322,11 +1327,14 @@ public class ChannelModel {
    *         the random variable mean, and the second is the variance.
    */
   public double[] getReceivedSignalStrength(double sourceX, double sourceY, double destX, double destY) {
-    return getTransmissionData(sourceX, sourceY, destX, destY, TransmissionData.SIGNAL_STRENGTH);
+    return getTransmissionData(sourceX, sourceY, destX, destY, TransmissionData.SIGNAL_STRENGTH, null);
   }
-
+  public double[] getReceivedSignalStrength(double sourceX, double sourceY, double destX, double destY, Double txPower) {
+    return getTransmissionData(sourceX, sourceY, destX, destY, TransmissionData.SIGNAL_STRENGTH, txPower);
+  }
+  
   // TODO Fix better data type support
-  private double[] getTransmissionData(double sourceX, double sourceY, double destX, double destY, TransmissionData dataType) {
+  private double[] getTransmissionData(double sourceX, double sourceY, double destX, double destY, TransmissionData dataType, Double txPower) {
     Point2D source = new Point2D.Double(sourceX, sourceY);
     Point2D dest = new Point2D.Double(destX, destY);
     double accumulatedVariance = 0;
@@ -1352,14 +1360,14 @@ public class ChannelModel {
     // Calculate all paths from source to destination, using above calculated tree
     Vector<RayPath> allPaths = getConnectingPaths(source, dest, visibleLinesTree);
 
-    if (inLoggingMode) {
-      logger.info("Saved rays:");
+    if (logMode) {
+    	logInfo.append("Signal components:\n");
       Enumeration<RayPath> pathsEnum = allPaths.elements();
       while (pathsEnum.hasMoreElements()) {
         RayPath currentPath = pathsEnum.nextElement();
-        logger.info("* " + currentPath);
+      	logInfo.append("* " + currentPath + "\n");
         for (int i=0; i < currentPath.getSubPathCount(); i++) {
-          savedRays.add(currentPath.getSubPath(i));
+          loggedRays.add(currentPath.getSubPath(i));
         }
       }
     }
@@ -1481,12 +1489,13 @@ public class ChannelModel {
 
         // Using Rician fading approach, TODO Only one best signal considered - combine these? (need two limits)
         totalPathGain += Math.pow(10, pathGain[i]/10.0)*Math.cos(2*Math.PI * pathModdedLengths[i]/wavelength);
-        if (inLoggingMode) {
-          logger.info("Adding ray path with gain " + pathGain[i] + " and phase " + (2*Math.PI * pathModdedLengths[i]/wavelength));
+        if (logMode) {
+        	logInfo.append("Signal component: " + String.format("%2.3f", pathGain[i]) + " dB, phase " + String.format("%2.3f", (2*/*Math.PI* */ pathModdedLengths[i]/wavelength)) + " pi\n");
         }
-      } else if (inLoggingMode) {
+      } else if (logMode) {
+      	/* TODO Log mode affects result? */
         pathModdedLengths[i] = (pathLengths[i] - pathLengths[bestSignalNr]) % wavelength;
-        logger.info("Not adding ray path with gain " + pathGain[i] + " and phase " + (2*Math.PI * pathModdedLengths[i]/wavelength));
+      	logInfo.append("(IGNORED) Signal component: " + String.format("%2.3f", pathGain[i]) + " dB, phase " + String.format("%2.3f", (2*/*Math.PI* */ pathModdedLengths[i]/wavelength)) + " pi\n");
       }
 
     }
@@ -1499,17 +1508,22 @@ public class ChannelModel {
     // Convert back to dB
     totalPathGain = 10*Math.log10(Math.abs(totalPathGain));
 
-    if (inLoggingMode) {
-      logger.info("Total path gain:\t" + totalPathGain);
-      logger.info("Delay spread:\t" + delaySpread);
-      logger.info("RMS Delay spread:\t" + delaySpreadRMS);
+    if (logMode) {
+    	logInfo.append("\nTotal path gain: " + String.format("%2.3f", totalPathGain) + " dB\n");
+    	logInfo.append("Delay spread: " + String.format("%2.3f", delaySpread) + "\n");
+    	logInfo.append("RMS delay spread: " + String.format("%2.3f", delaySpreadRMS) + "\n");
     }
 
     // - Calculate received power -
     // Using formula (dB)
     //  Received power = Output power + System gain + Transmitter gain + Path Loss + Receiver gain
     // TODO Update formulas
-    double outputPower = getParameterDoubleValue("tx_power");
+    double outputPower;
+    if (txPower == null) {
+      outputPower = getParameterDoubleValue("tx_power");
+    } else {
+    	outputPower = txPower;
+    }
     double systemGain = getParameterDoubleValue("system_gain_mean");
     if (getParameterBooleanValue("apply_random")) {
       Random random = new Random(); /* TODO Use main random generator? */
@@ -1520,8 +1534,8 @@ public class ChannelModel {
     double transmitterGain = getParameterDoubleValue("tx_antenna_gain"); // TODO Should depend on angle
 
     double receivedPower = outputPower + systemGain + transmitterGain + totalPathGain;
-    if (inLoggingMode) {
-      logger.info("Resulting received signal strength:\t" + receivedPower + " (" + accumulatedVariance + ")");
+    if (logMode) {
+    	logInfo.append("\nReceived signal strength: " + String.format("%2.3f", receivedPower) + " dB (variance " + accumulatedVariance + ")\n");
     }
 
     if (dataType == TransmissionData.DELAY_SPREAD || dataType == TransmissionData.DELAY_SPREAD_RMS) {
@@ -1531,6 +1545,11 @@ public class ChannelModel {
     return new double[] {receivedPower, accumulatedVariance};
   }
 
+  public class TrackedSignalComponents {
+  	ArrayList<Line2D> components;
+  	String log;
+  }
+  
   /**
    * Returns all rays from given source to given destination if a transmission
    * were to be made. The resulting rays depend on the current settings and may
@@ -1540,20 +1559,26 @@ public class ChannelModel {
    * @param sourceY Source position Y
    * @param destX Destination position X
    * @param destY Destination position Y
-   * @return All resulting rays of a simulated transmission from source to destination
+   * @return Signal components and printable description
    */
-  public Vector<Line2D> getRaysOfTransmission(double sourceX, double sourceY, double destX, double destY) {
+  public TrackedSignalComponents getRaysOfTransmission(double sourceX, double sourceY, double destX, double destY) {
+    TrackedSignalComponents tsc = new TrackedSignalComponents();
 
-    // Reset current rays vector
-    inLoggingMode = true;
-    savedRays = new Vector<Line2D>();
+    logInfo = new StringBuilder();
+    loggedRays = new ArrayList<Line2D>();
 
-    // Calculate rays, ignore power
+    /* TODO Include background noise? */
+    logMode = true;
     getProbability(sourceX, sourceY, destX, destY, -Double.MAX_VALUE);
+    logMode = false;
 
-    inLoggingMode = false;
-
-    return savedRays;
+    tsc.log = logInfo.toString();
+    tsc.components = loggedRays;
+    
+    logInfo = null;
+    loggedRays = null;
+    
+    return tsc;
   }
 
   /**
@@ -1562,19 +1587,19 @@ public class ChannelModel {
    * variable. This method uses current parameters such as transmitted power,
    * obstacles, overall system loss etc.
    *
-   * @param sourceX
-   *          Source position X
-   * @param sourceY
-   *          Source position Y
-   * @param destX
-   *          Destination position X
-   * @param destY
-   *          Destination position Y
-   * @return Received SNR (dB) random variable. The first value is the random
-   *         variable mean, and the second is the variance. The third value is the received signal strength which may be used in comparison with interference etc.
+   * @param sourceX Source position X
+   * @param sourceY Source position Y
+   * @param destX Destination position X
+   * @param destY Destination position Y
+   * @return Received SNR (dB) random variable:
+   * The first value in the array is the random variable mean.
+   * The second is the variance.
+   * The third value is the received signal strength which may be used in comparison with interference etc.
    */
   public double[] getSINR(double sourceX, double sourceY, double destX, double destY, double interference) {
-
+  	/* TODO Cache values: called repeatedly with noise sources. */
+  	
+  	
     // Calculate received signal strength
     double[] signalStrength = getReceivedSignalStrength(sourceX, sourceY, destX, destY);
 
@@ -1601,28 +1626,27 @@ public class ChannelModel {
     snrData[0] -= noiseMean;
     snrData[1] += noiseVariance;
 
-    if (inLoggingMode) {
-      logger.info("SNR at receiver:\t" + snrData[0] + " (" + snrData[1] + ")");
+    if (logMode) {
+    	logInfo.append("\nReceived SNR: " + String.format("%2.3f", snrData[0]) + " dB (variance " + snrData[1] + ")\n");
     }
     return snrData;
   }
 
 
   /**
-   * Calculates and returns probability that a receiver at given destination receives a packet from a transmitter at given source.
+   * Calculates probability that a receiver at given destination receives 
+   * a packet from a transmitter at given source.
    * This method uses current parameters such as transmitted power,
-   * obstacles, overall system loss, packet size etc. TODO Packet size?! TODO Interfering signal strength
+   * obstacles, overall system loss, packet size etc.
+   * 
+   * TODO Packet size
+   * TODO External interference/Background noise
    *
-   * @param sourceX
-   *          Source position X
-   * @param sourceY
-   *          Source position Y
-   * @param destX
-   *          Destination position X
-   * @param destY
-   *          Destination position Y
-   * @param interference
-   *          Current interference at destination (dBm)
+   * @param sourceX Source position X
+   * @param sourceY Source position Y
+   * @param destX Destination position X
+   * @param destY Destination position Y
+   * @param interference Current interference at destination (dBm)
    * @return [Probability of reception, signal strength at destination]
    */
   public double[] getProbability(double sourceX, double sourceY, double destX, double destY, double interference) {
@@ -1634,9 +1658,10 @@ public class ChannelModel {
     double rxSensitivity = getParameterDoubleValue("rx_sensitivity");
 
     // Check signal strength against receiver sensitivity and interference
-    if (rxSensitivity > signalStrength - snrMean && threshold < rxSensitivity + snrMean - signalStrength) {
-      if (inLoggingMode) {
-        logger.info("Signal to low for receiver sensitivity, increasing threshold");
+    if (rxSensitivity > signalStrength - snrMean && 
+    		threshold < rxSensitivity + snrMean - signalStrength) {
+      if (logMode) {
+      	logInfo.append("Weak signal: increasing threshold\n");
       }
 
       // Keeping snr variance but increasing theshold to sensitivity
@@ -1657,11 +1682,10 @@ public class ChannelModel {
     // current threshold.
 
     // (Using error algorithm method, much faster than taylor approximation!)
-    double probReception = 1 - GaussianWrapper.cdfErrorAlgo(
-        threshold, snrMean, snrStdDev);
+    double probReception = 1 - GaussianWrapper.cdfErrorAlgo(threshold, snrMean, snrStdDev);
 
-    if (inLoggingMode) {
-      logger.info("Probability of reception: " + probReception);
+    if (logMode) {
+      logInfo.append("Reception probability: " + String.format("%1.1f%%", 100*probReception) + "\n");
     }
 
     // Returns probabilities
@@ -1684,7 +1708,7 @@ public class ChannelModel {
    * @return RMS delay spread
    */
   public double getRMSDelaySpread(double sourceX, double sourceY, double destX, double destY) {
-    return getTransmissionData(sourceX, sourceY, destX, destY, TransmissionData.DELAY_SPREAD)[1];
+    return getTransmissionData(sourceX, sourceY, destX, destY, TransmissionData.DELAY_SPREAD, null)[1];
   }
 
   /**
diff --git a/tools/cooja/apps/mrm/java/se/sics/mrm/MRM.java b/tools/cooja/apps/mrm/java/se/sics/mrm/MRM.java
index e44264579..ba9e45d0a 100644
--- a/tools/cooja/apps/mrm/java/se/sics/mrm/MRM.java
+++ b/tools/cooja/apps/mrm/java/se/sics/mrm/MRM.java
@@ -43,13 +43,14 @@ import org.jdom.Element;
 import se.sics.cooja.ClassDescription;
 import se.sics.cooja.RadioConnection;
 import se.sics.cooja.Simulation;
+import se.sics.cooja.interfaces.NoiseSourceRadio;
+import se.sics.cooja.interfaces.NoiseSourceRadio.NoiseLevelListener;
 import se.sics.cooja.interfaces.Position;
 import se.sics.cooja.interfaces.Radio;
 import se.sics.cooja.radiomediums.AbstractRadioMedium;
 
 /**
- * This is the main class of the COOJA Multi-path Ray-tracing Medium (MRM)
- * package.
+ * Multi-path Ray-tracing radio medium (MRM).
  *
  * MRM is an alternative to the simpler radio mediums available in
  * COOJA. It is packet based and uses a 2D ray-tracing approach to approximate
@@ -57,22 +58,27 @@ import se.sics.cooja.radiomediums.AbstractRadioMedium;
  * ray-tracing only supports reflections and refractions through homogeneous
  * obstacles.
  *
- * MRM registers two plugins: a plugin for visualizing the radio
- * environments, and a plugin for configuring the radio medium parameters.
+ * MRM provides two plugins: one for visualizing the radio environment,
+ * and one for configuring the radio medium parameters.
  *
  * Future work includes adding support for diffraction and scattering.
  *
+ * MRM supports noise source radios.
+ * 
+ * @see NoiseSourceRadio
  * @author Fredrik Osterlind
  */
 @ClassDescription("Multi-path Ray-tracer Medium (MRM)")
 public class MRM extends AbstractRadioMedium {
   private static Logger logger = Logger.getLogger(MRM.class);
 
-  private ChannelModel currentChannelModel = null;
-
-  private Random random = null;
+  public final static boolean WITH_NOISE = true; /* NoiseSourceRadio:s */
+  public final static boolean WITH_CAPTURE_EFFECT = true;
 
   private Simulation sim;
+  private Random random = null;
+  private ChannelModel currentChannelModel = null;
+
   /**
    * Notifies observers when this radio medium has changed settings.
    */
@@ -83,11 +89,9 @@ public class MRM extends AbstractRadioMedium {
    */
   public MRM(Simulation simulation) {
     super(simulation);
-    sim = simulation;
-    
-    random = simulation.getRandomGenerator();
 
-    // Create the channel model
+    sim = simulation;
+    random = simulation.getRandomGenerator();
     currentChannelModel = new ChannelModel();
 
   	/* Register plugins */
@@ -95,6 +99,26 @@ public class MRM extends AbstractRadioMedium {
     sim.getGUI().registerPlugin(FormulaViewer.class);
   }
 
+  private NoiseLevelListener noiseListener = new NoiseLevelListener() {
+  	public void noiseLevelChanged(NoiseSourceRadio radio, int signal) {
+  		updateSignalStrengths();
+  	};
+  };
+  public void registerRadioInterface(Radio radio, Simulation sim) {
+  	super.registerRadioInterface(radio, sim);
+  	
+  	if (radio instanceof NoiseSourceRadio) {
+  		((NoiseSourceRadio)radio).addNoiseLevelListener(noiseListener);
+  	}
+  }
+  public void unregisterRadioInterface(Radio radio, Simulation sim) {
+  	super.unregisterRadioInterface(radio, sim);
+
+  	if (radio instanceof NoiseSourceRadio) {
+  		((NoiseSourceRadio)radio).removeNoiseLevelListener(noiseListener);
+  	}
+  }
+  
   public void removed() {
   	super.removed();
 
@@ -103,90 +127,82 @@ public class MRM extends AbstractRadioMedium {
     sim.getGUI().unregisterPlugin(FormulaViewer.class);
   }
   
-  public MRMRadioConnection createConnections(Radio sendingRadio) {
-    Position sendingPosition = sendingRadio.getPosition();
-    MRMRadioConnection newConnection = new MRMRadioConnection(sendingRadio);
+  public MRMRadioConnection createConnections(Radio sender) {
+    MRMRadioConnection newConnection = new MRMRadioConnection(sender);
+    Position senderPos = sender.getPosition();
 
-    // Loop through all radios
-    for (Radio listeningRadio: getRegisteredRadios()) {
-      // Ignore sending radio and radios on different channels
-      if (sendingRadio == listeningRadio) {
-        continue;
-      }
-      if (sendingRadio.getChannel() >= 0 &&
-          listeningRadio.getChannel() >= 0 &&
-          sendingRadio.getChannel() != listeningRadio.getChannel()) {
+    /* TODO Cache potential destination in DGRM */
+    /* Loop through all potential destinations */
+    for (Radio recv: getRegisteredRadios()) {
+      if (sender == recv) {
         continue;
       }
 
-      /* TODO Use DGRM to cache link information.
-       * (No need to loop over all receivers) */
-      
-      double listeningPositionX = listeningRadio.getPosition().getXCoordinate();
-      double listeningPositionY = listeningRadio.getPosition().getYCoordinate();
+      /* Fail if radios are on different (but configured) channels */ 
+      if (sender.getChannel() >= 0 &&
+          recv.getChannel() >= 0 &&
+          sender.getChannel() != recv.getChannel()) {
+        continue;
+      }
+      Position recvPos = recv.getPosition();
 
-      // Calculate probability of reception of listening radio
+      /* Calculate receive probability */
       double[] probData = currentChannelModel.getProbability(
-          sendingPosition.getXCoordinate(),
-          sendingPosition.getYCoordinate(),
-          listeningPositionX,
-          listeningPositionY,
-          -Double.MAX_VALUE
+          senderPos.getXCoordinate(),
+          senderPos.getYCoordinate(),
+          recvPos.getXCoordinate(),
+          recvPos.getYCoordinate(),
+          -Double.MAX_VALUE /* TODO Include interference */
       );
 
-      //logger.info("Probability of reception is " + probData[0]);
-      //logger.info("Signal strength at destination is " + probData[1]);
-      if (random.nextFloat() < probData[0]) {
-        // Check if this radio is able to receive transmission
-        if (listeningRadio.isInterfered()) {
-          // Keep interfering radio
-          newConnection.addInterfered(listeningRadio, probData[1]);
+      double recvProb = probData[0];
+      double recvSignalStrength = probData[1];
+      if (recvProb == 1.0 || random.nextDouble() < recvProb) {
+      	/* Yes, the receiver *may* receive this packet (it's strong enough) */
+        if (!recv.isReceiverOn()) {
+          newConnection.addInterfered(recv);
+          recv.interfereAnyReception();
+        } else if (recv.isInterfered()) {
+          /* Was interfered: keep interfering */
+          newConnection.addInterfered(recv, recvSignalStrength);
+        } else if (recv.isTransmitting()) {
+          newConnection.addInterfered(recv, recvSignalStrength);
+        } else if (recv.isReceiving()) {
+          /* Was already receiving: start interfering.
+           * Assuming no continuous preambles checking */
+        	
+        	double currSignal = recv.getCurrentSignalStrength();
+        	/* Capture effect: recv-radio is already receiving.
+        	 * Are we strong enough to interfere? */
+        	if (WITH_CAPTURE_EFFECT &&
+        			recvSignalStrength < currSignal - 3 /* config */) {
+        		/* No, we are too weak */
+        	} else {
+          	newConnection.addInterfered(recv, recvSignalStrength);
+            recv.interfereAnyReception();
 
-        } else if (listeningRadio.isReceiving()) {
-          newConnection.addInterfered(listeningRadio, probData[1]);
-
-          // Start interfering radio
-          listeningRadio.interfereAnyReception();
-
-          // Update connection that is transmitting to this radio
-          MRMRadioConnection existingConn = null;
-          for (RadioConnection conn : getActiveConnections()) {
-            for (Radio dstRadio : ((MRMRadioConnection) conn).getDestinations()) {
-              if (dstRadio == listeningRadio) {
-                existingConn = (MRMRadioConnection) conn;
-                break;
+            /* Interfere receiver in all other active radio connections */
+            for (RadioConnection conn : getActiveConnections()) {
+              if (conn.isDestination(recv)) {
+                conn.addInterfered(recv);
               }
             }
-          }
-          if (existingConn != null) {
-            /* Flag radio as interfered */
-            existingConn.addInterfered(listeningRadio);
-            listeningRadio.interfereAnyReception();
-          }
+        	}
+
         } else {
-          // Radio OK to receive
-          //logger.info("OK, creating connection and starting to transmit");
-          newConnection.addDestination(listeningRadio, probData[1]);
+          /* Success: radio starts receiving */
+          newConnection.addDestination(recv, recvSignalStrength);
         }
-      } else if (probData[1] > currentChannelModel.getParameterDoubleValue("bg_noise_mean")) {
-        // Interfere radio
-        newConnection.addInterfered(listeningRadio, probData[1]);
-        listeningRadio.interfereAnyReception();
-
-        // TODO Radios always get interfered right now, should recalculate probability
-//      if (maxInterferenceSignalStrength + SOME_RELEVANT_LIMIT > transmissionSignalStrength) {
-//      // Recalculating probability of delivery
-//      double[] probData = currentChannelModel.getProbability(
-//          mySource.source.position.getXCoordinate(),
-//          mySource.source.position.getYCoordinate(),
-//          myDestination.position.getXCoordinate(),
-//          myDestination.position.getYCoordinate(),
-//          maxInterferenceSignalStrength);
-//
-//      if (new Random().nextFloat() >= probData[0]) {
-//        return true;
-//      }
+      } else if (recvSignalStrength > currentChannelModel.getParameterDoubleValue("bg_noise_mean")) {
+      	/* The incoming signal is strong, but strong enough to interfere? */
 
+      	if (!WITH_CAPTURE_EFFECT) {
+      		newConnection.addInterfered(recv, recvSignalStrength);
+      		recv.interfereAnyReception();
+      	} else {
+        	/* TODO Implement new type: newConnection.addNoise()?
+      	 * Currently, this connection will never disturb this radio... */
+      	}
       }
 
     }
@@ -195,57 +211,92 @@ public class MRM extends AbstractRadioMedium {
   }
 
   public void updateSignalStrengths() {
-    // // Save old signal strengths
-    // double[] oldSignalStrengths = new double[registeredRadios.size()];
-    // for (int i = 0; i < registeredRadios.size(); i++) {
-    // oldSignalStrengths[i] = registeredRadios.get(i)
-    // .getCurrentSignalStrength();
-    // }
 
-    // Reset signal strength on all radios
+    /* Reset: Background noise */
+  	double background = 
+  		currentChannelModel.getParameterDoubleValue(("bg_noise_mean"));
     for (Radio radio : getRegisteredRadios()) {
-      radio.setCurrentSignalStrength(currentChannelModel.getParameterDoubleValue(("bg_noise_mean")));
+      radio.setCurrentSignalStrength(background);
     }
 
-    // Set signal strength on all OK transmissions
-    for (RadioConnection conn : getActiveConnections()) {
-//    ((MRMRadioConnection) conn).getSource().setCurrentSignalStrength(12345); // TODO Set signal strength on source?
+    /* Active radio connections */
+    RadioConnection[] conns = getActiveConnections();
+    for (RadioConnection conn : conns) {
       for (Radio dstRadio : ((MRMRadioConnection) conn).getDestinations()) {
         double signalStrength = ((MRMRadioConnection) conn).getDestinationSignalStrength(dstRadio);
-        if (signalStrength > dstRadio.getCurrentSignalStrength()) {
+        if (dstRadio.getCurrentSignalStrength() < signalStrength) {
           dstRadio.setCurrentSignalStrength(signalStrength);
         }
       }
     }
 
-    // Set signal strength on all interferences
-    for (RadioConnection conn : getActiveConnections()) {
-      for (Radio interferedRadio : ((MRMRadioConnection) conn).getInterfered()) {
-        double signalStrength = ((MRMRadioConnection) conn).getInterferenceSignalStrength(interferedRadio);
-        if (signalStrength > interferedRadio.getCurrentSignalStrength()) {
-          interferedRadio.setCurrentSignalStrength(signalStrength);
+    /* Interfering/colliding radio connections */
+    for (RadioConnection conn : conns) {
+      for (Radio intfRadio : ((MRMRadioConnection) conn).getInterfered()) {
+        double signalStrength = ((MRMRadioConnection) conn).getInterferenceSignalStrength(intfRadio);
+        if (intfRadio.getCurrentSignalStrength() < signalStrength) {
+        	intfRadio.setCurrentSignalStrength(signalStrength);
         }
 
-        if (!interferedRadio.isInterfered()) {
-          // Set to interfered again
-          interferedRadio.interfereAnyReception();
+        if (!intfRadio.isInterfered()) {
+          /*logger.warn("Radio was not interfered: " + intfRadio);*/
+        	intfRadio.interfereAnyReception();
         }
       }
     }
 
-    // // Fetch new signal strengths
-    // double[] newSignalStrengths = new double[registeredRadios.size()];
-    // for (int i = 0; i < registeredRadios.size(); i++) {
-    // newSignalStrengths[i] = registeredRadios.get(i)
-    // .getCurrentSignalStrength();
-    // }
-    //
-    // // Compare new and old signal strengths
-    // for (int i = 0; i < registeredRadios.size(); i++) {
-    // if (oldSignalStrengths[i] != newSignalStrengths[i])
-    // logger.warn("Signal strengths changed on radio[" + i + "]: "
-    // + oldSignalStrengths[i] + " -> " + newSignalStrengths[i]);
-    // }
+    /* Check for noise sources */
+    if (!WITH_NOISE) return;
+    for (Radio noiseRadio: getRegisteredRadios()) {
+    	if (!(noiseRadio instanceof NoiseSourceRadio)) {
+    		continue;
+    	}
+    	NoiseSourceRadio radio = (NoiseSourceRadio) noiseRadio;
+    	int signalStrength = radio.getNoiseLevel();
+    	if (signalStrength == Integer.MIN_VALUE) {
+    		continue;
+    	}
+
+    	/* Calculate how noise source affects surrounding radios */
+      for (Radio affectedRadio : getRegisteredRadios()) {
+      	if (noiseRadio == affectedRadio) {
+      		continue;
+      	}
+
+      	/* Update noise levels */
+      	double[] signalMeanVar = currentChannelModel.getReceivedSignalStrength(
+      			noiseRadio.getPosition().getXCoordinate(),
+      			noiseRadio.getPosition().getYCoordinate(),
+      			affectedRadio.getPosition().getXCoordinate(),
+      			affectedRadio.getPosition().getYCoordinate(),
+      			(double) signalStrength); /* TODO Convert to dBm */
+      	double signal = signalMeanVar[0];
+      	if (signal < background) {
+      		continue;
+      	}
+
+      	/* TODO Additive signals strengths? */
+      	/* TODO XXX Consider radio channels */
+      	/* TODO XXX Potentially interfere even when signal is weaker (~3dB)...
+      	 * (we may alternatively just use the getSINR method...) */
+      	if (affectedRadio.getCurrentSignalStrength() < signal) {
+        	affectedRadio.setCurrentSignalStrength(signal);
+
+        	/* TODO Interfere with radio connections? */
+        	if (affectedRadio.isReceiving() && !affectedRadio.isInterfered()) {
+          	for (RadioConnection conn : conns) {
+          		if (conn.isDestination(affectedRadio)) {
+          			/* Intefere with current reception, mark radio as interfered */
+                conn.addInterfered(affectedRadio);
+                if (!affectedRadio.isInterfered()) {
+                	affectedRadio.interfereAnyReception();
+                }
+          		}
+          	}
+        	}
+      	}
+      }
+    }
   }
 
   public Collection<Element> getConfigXML() {
@@ -279,20 +330,11 @@ public class MRM extends AbstractRadioMedium {
     settingsObservable.deleteObserver(obs);
   }
 
-  /**
-   * Returns position of given radio.
-   *
-   * @param radio Registered radio
-   * @return Position of given radio
-   */
-  public Position getRadioPosition(Radio radio) {
-    return radio.getPosition();
-  }
-
   /**
    * @return Number of registered radios.
    */
   public int getRegisteredRadioCount() {
+  	/* TODO Expensive operation */
     return getRegisteredRadios().length;
   }
 
@@ -341,10 +383,16 @@ public class MRM extends AbstractRadioMedium {
     }
 
     public double getDestinationSignalStrength(Radio radio) {
+    	if (signalStrengths.get(radio) == null) {
+    		return Double.MIN_VALUE;
+    	}
       return signalStrengths.get(radio);
     }
 
     public double getInterferenceSignalStrength(Radio radio) {
+    	if (signalStrengths.get(radio) == null) {
+    		return Double.MIN_VALUE;
+    	}
       return signalStrengths.get(radio);
     }
   }
diff --git a/tools/cooja/apps/mspsim/src/se/sics/cooja/mspmote/interfaces/SkyButton.java b/tools/cooja/apps/mspsim/src/se/sics/cooja/mspmote/interfaces/SkyButton.java
index 8e3f13cca..0bd8ca82c 100644
--- a/tools/cooja/apps/mspsim/src/se/sics/cooja/mspmote/interfaces/SkyButton.java
+++ b/tools/cooja/apps/mspsim/src/se/sics/cooja/mspmote/interfaces/SkyButton.java
@@ -100,7 +100,7 @@ public class SkyButton extends Button {
   }
 
   public boolean isPressed() {
-    logger.warn("Not implemented");
+  	/* Not implemented */
     return false;
   }
 
diff --git a/tools/cooja/apps/mspsim/src/se/sics/cooja/mspmote/interfaces/SkyByteRadio.java b/tools/cooja/apps/mspsim/src/se/sics/cooja/mspmote/interfaces/SkyByteRadio.java
old mode 100755
new mode 100644
index 26043cf48..d73a75270
--- a/tools/cooja/apps/mspsim/src/se/sics/cooja/mspmote/interfaces/SkyByteRadio.java
+++ b/tools/cooja/apps/mspsim/src/se/sics/cooja/mspmote/interfaces/SkyByteRadio.java
@@ -31,17 +31,7 @@
 
 package se.sics.cooja.mspmote.interfaces;
 
-import java.awt.BorderLayout;
-import java.awt.GridLayout;
-import java.awt.event.ActionEvent;
-import java.awt.event.ActionListener;
 import java.util.Collection;
-import java.util.Observable;
-import java.util.Observer;
-
-import javax.swing.JButton;
-import javax.swing.JLabel;
-import javax.swing.JPanel;
 
 import org.apache.log4j.Logger;
 import org.jdom.Element;
@@ -385,84 +375,6 @@ public class SkyByteRadio extends Radio implements CustomDataRadio {
     rssiLastCounter = 8;
   }
 
-  public JPanel getInterfaceVisualizer() {
-    // Location
-    JPanel wrapperPanel = new JPanel(new BorderLayout());
-    JPanel panel = new JPanel(new GridLayout(5, 2));
-
-    final JLabel statusLabel = new JLabel("");
-    final JLabel lastEventLabel = new JLabel("");
-    final JLabel channelLabel = new JLabel("");
-    final JLabel powerLabel = new JLabel("");
-    final JLabel ssLabel = new JLabel("");
-    final JButton updateButton = new JButton("Update");
-
-    panel.add(new JLabel("STATE:"));
-    panel.add(statusLabel);
-
-    panel.add(new JLabel("LAST EVENT:"));
-    panel.add(lastEventLabel);
-
-    panel.add(new JLabel("CHANNEL:"));
-    panel.add(channelLabel);
-
-    panel.add(new JLabel("OUTPUT POWER:"));
-    panel.add(powerLabel);
-
-    panel.add(new JLabel("SIGNAL STRENGTH:"));
-    JPanel smallPanel = new JPanel(new GridLayout(1, 2));
-    smallPanel.add(ssLabel);
-    smallPanel.add(updateButton);
-    panel.add(smallPanel);
-
-    updateButton.addActionListener(new ActionListener() {
-      public void actionPerformed(ActionEvent e) {
-        channelLabel.setText(getChannel() + " (freq=" + getFrequency() + " MHz)");
-        powerLabel.setText(getCurrentOutputPower() + " dBm (indicator=" + getCurrentOutputPowerIndicator() + "/" + getOutputPowerIndicatorMax() + ")");
-        ssLabel.setText(getCurrentSignalStrength() + " dBm");
-      }
-    });
-
-    Observer observer;
-    this.addObserver(observer = new Observer() {
-      public void update(Observable obs, Object obj) {
-        if (isTransmitting()) {
-          statusLabel.setText("transmitting");
-        } else if (isReceiving()) {
-          statusLabel.setText("receiving");
-        } else if (isReceiverOn()) {
-          statusLabel.setText("listening for traffic");
-        } else {
-          statusLabel.setText("HW off");
-        }
-
-        lastEventLabel.setText(lastEvent + " @ time=" + lastEventTime);
-
-        channelLabel.setText(getChannel() + " (freq=" + getFrequency() + " MHz)");
-        powerLabel.setText(getCurrentOutputPower() + " dBm (indicator=" + getCurrentOutputPowerIndicator() + "/" + getOutputPowerIndicatorMax() + ")");
-        ssLabel.setText(getCurrentSignalStrength() + " dBm");
-      }
-    });
-
-    observer.update(null, null);
-
-    wrapperPanel.add(BorderLayout.NORTH, panel);
-
-    // Saving observer reference for releaseInterfaceVisualizer
-    wrapperPanel.putClientProperty("intf_obs", observer);
-    return wrapperPanel;
-  }
-
-  public void releaseInterfaceVisualizer(JPanel panel) {
-    Observer observer = (Observer) panel.getClientProperty("intf_obs");
-    if (observer == null) {
-      logger.fatal("Error when releasing panel, observer is null");
-      return;
-    }
-
-    this.deleteObserver(observer);
-  }
-
   public Mote getMote() {
     return mote;
   }
diff --git a/tools/cooja/apps/mspsim/src/se/sics/cooja/mspmote/interfaces/TR1001Radio.java b/tools/cooja/apps/mspsim/src/se/sics/cooja/mspmote/interfaces/TR1001Radio.java
index 6d71a9ae2..03d7cbe1e 100644
--- a/tools/cooja/apps/mspsim/src/se/sics/cooja/mspmote/interfaces/TR1001Radio.java
+++ b/tools/cooja/apps/mspsim/src/se/sics/cooja/mspmote/interfaces/TR1001Radio.java
@@ -355,86 +355,6 @@ public class TR1001Radio extends Radio implements USARTListener, CustomDataRadio
     }
   };
 
-  public JPanel getInterfaceVisualizer() {
-    // Location
-    JPanel wrapperPanel = new JPanel(new BorderLayout());
-    JPanel panel = new JPanel(new GridLayout(5, 2));
-
-    final JLabel statusLabel = new JLabel("");
-    final JLabel lastEventLabel = new JLabel("");
-    final JLabel channelLabel = new JLabel("ALL CHANNELS (-1)");
-    final JLabel powerLabel = new JLabel("");
-    final JLabel ssLabel = new JLabel("");
-    final JButton updateButton = new JButton("Update");
-
-    panel.add(new JLabel("STATE:"));
-    panel.add(statusLabel);
-
-    panel.add(new JLabel("LAST EVENT:"));
-    panel.add(lastEventLabel);
-
-    panel.add(new JLabel("CHANNEL:"));
-    panel.add(channelLabel);
-
-    panel.add(new JLabel("OUTPUT POWER:"));
-    panel.add(powerLabel);
-
-    panel.add(new JLabel("SIGNAL STRENGTH:"));
-    JPanel smallPanel = new JPanel(new GridLayout(1, 2));
-    smallPanel.add(ssLabel);
-    smallPanel.add(updateButton);
-    panel.add(smallPanel);
-
-    updateButton.addActionListener(new ActionListener() {
-      public void actionPerformed(ActionEvent e) {
-        powerLabel.setText(getCurrentOutputPower() + " dBm (indicator="
-            + getCurrentOutputPowerIndicator() + "/"
-            + getOutputPowerIndicatorMax() + ")");
-        ssLabel.setText(getCurrentSignalStrength() + " dBm");
-      }
-    });
-
-    Observer observer;
-    this.addObserver(observer = new Observer() {
-      public void update(Observable obs, Object obj) {
-        if (isTransmitting()) {
-          statusLabel.setText("transmitting");
-        } else if (isReceiving()) {
-          statusLabel.setText("receiving");
-        } else if (radioOn) {
-          statusLabel.setText("listening for traffic");
-        } else {
-          statusLabel.setText("HW off");
-        }
-
-        lastEventLabel.setText(lastEvent + " @ time=" + lastEventTime);
-
-        powerLabel.setText(getCurrentOutputPower() + " dBm (indicator="
-            + getCurrentOutputPowerIndicator() + "/"
-            + getOutputPowerIndicatorMax() + ")");
-        ssLabel.setText(getCurrentSignalStrength() + " dBm");
-      }
-    });
-
-    observer.update(null, null);
-
-    // Saving observer reference for releaseInterfaceVisualizer
-    panel.putClientProperty("intf_obs", observer);
-
-    wrapperPanel.add(BorderLayout.NORTH, panel);
-    return wrapperPanel;
-  }
-
-  public void releaseInterfaceVisualizer(JPanel panel) {
-    Observer observer = (Observer) panel.getClientProperty("intf_obs");
-    if (observer == null) {
-      logger.fatal("Error when releasing panel, observer is null");
-      return;
-    }
-
-    this.deleteObserver(observer);
-  }
-
   public Collection<Element> getConfigXML() {
     return null;
   }
diff --git a/tools/cooja/java/se/sics/cooja/Simulation.java b/tools/cooja/java/se/sics/cooja/Simulation.java
index 0fbe1297f..6cad2a24b 100644
--- a/tools/cooja/java/se/sics/cooja/Simulation.java
+++ b/tools/cooja/java/se/sics/cooja/Simulation.java
@@ -685,6 +685,12 @@ public class Simulation extends Observable implements Runnable {
 
     setChanged();
     notifyObservers(this);
+    
+    /* Execute simulation thread events now, before simulation starts */
+    while (hasPollRequests) {
+      popSimulationInvokes().run();
+    }
+    
     return true;
   }
 
diff --git a/tools/cooja/java/se/sics/cooja/contikimote/interfaces/ContikiRadio.java b/tools/cooja/java/se/sics/cooja/contikimote/interfaces/ContikiRadio.java
index ca756bec7..b301c2114 100644
--- a/tools/cooja/java/se/sics/cooja/contikimote/interfaces/ContikiRadio.java
+++ b/tools/cooja/java/se/sics/cooja/contikimote/interfaces/ContikiRadio.java
@@ -345,84 +345,6 @@ public class ContikiRadio extends Radio implements ContikiMoteInterface, PolledA
     }
   }
 
-  public JPanel getInterfaceVisualizer() {
-    // Location
-    JPanel wrapperPanel = new JPanel(new BorderLayout());
-    JPanel panel = new JPanel(new GridLayout(5, 2));
-
-    final JLabel statusLabel = new JLabel("");
-    final JLabel lastEventLabel = new JLabel("");
-    final JLabel channelLabel = new JLabel("");
-    final JLabel powerLabel = new JLabel("");
-    final JLabel ssLabel = new JLabel("");
-    final JButton updateButton = new JButton("Update");
-
-    panel.add(new JLabel("STATE:"));
-    panel.add(statusLabel);
-
-    panel.add(new JLabel("LAST EVENT:"));
-    panel.add(lastEventLabel);
-
-    panel.add(new JLabel("CHANNEL:"));
-    panel.add(channelLabel);
-
-    panel.add(new JLabel("OUTPUT POWER:"));
-    panel.add(powerLabel);
-
-    panel.add(new JLabel("SIGNAL STRENGTH:"));
-    JPanel smallPanel = new JPanel(new GridLayout(1, 2));
-    smallPanel.add(ssLabel);
-    smallPanel.add(updateButton);
-    panel.add(smallPanel);
-
-    updateButton.addActionListener(new ActionListener() {
-      public void actionPerformed(ActionEvent e) {
-        channelLabel.setText("" + getChannel());
-        powerLabel.setText(getCurrentOutputPower() + " dBm (indicator=" + getCurrentOutputPowerIndicator() + "/" + getOutputPowerIndicatorMax() + ")");
-        ssLabel.setText(getCurrentSignalStrength() + " dBm");
-      }
-    });
-
-    Observer observer;
-    this.addObserver(observer = new Observer() {
-      public void update(Observable obs, Object obj) {
-        if (isTransmitting()) {
-          statusLabel.setText("transmitting");
-        } else if (isReceiving()) {
-          statusLabel.setText("receiving");
-        } else if (radioOn) {
-          statusLabel.setText("listening for traffic");
-        } else {
-          statusLabel.setText("HW off");
-        }
-
-        lastEventLabel.setText(lastEvent + " @ time=" + lastEventTime);
-
-        channelLabel.setText("" + getChannel());
-        powerLabel.setText(getCurrentOutputPower() + " dBm (indicator=" + getCurrentOutputPowerIndicator() + "/" + getOutputPowerIndicatorMax() + ")");
-        ssLabel.setText(getCurrentSignalStrength() + " dBm");
-      }
-    });
-
-    observer.update(null, null);
-
-    wrapperPanel.add(BorderLayout.NORTH, panel);
-
-    // Saving observer reference for releaseInterfaceVisualizer
-    wrapperPanel.putClientProperty("intf_obs", observer);
-    return wrapperPanel;
-  }
-
-  public void releaseInterfaceVisualizer(JPanel panel) {
-    Observer observer = (Observer) panel.getClientProperty("intf_obs");
-    if (observer == null) {
-      logger.fatal("Error when releasing panel, observer is null");
-      return;
-    }
-
-    this.deleteObserver(observer);
-  }
-
   public Collection<Element> getConfigXML() {
     return null;
   }
diff --git a/tools/cooja/java/se/sics/cooja/dialogs/SerialUI.java b/tools/cooja/java/se/sics/cooja/dialogs/SerialUI.java
index 48632ad3b..3fa13a9d2 100644
--- a/tools/cooja/java/se/sics/cooja/dialogs/SerialUI.java
+++ b/tools/cooja/java/se/sics/cooja/dialogs/SerialUI.java
@@ -346,7 +346,10 @@ public abstract class SerialUI extends Log implements SerialPort {
       } else {
         newMessage.append((char) data);
         if (newMessage.length() > MAX_LENGTH) {
-          logger.warn("Dropping too large log message (>" + MAX_LENGTH + " bytes).");
+          /*logger.warn("Dropping too large log message (>" + MAX_LENGTH + " bytes).");*/
+        	lastLogMessage = "# [1024 bytes binary data]";
+          this.setChanged();
+          this.notifyObservers(getMote());
           newMessage.setLength(0);
         }
       }
diff --git a/tools/cooja/java/se/sics/cooja/emulatedmote/Radio802154.java b/tools/cooja/java/se/sics/cooja/emulatedmote/Radio802154.java
index 678169ff9..8fc187310 100644
--- a/tools/cooja/java/se/sics/cooja/emulatedmote/Radio802154.java
+++ b/tools/cooja/java/se/sics/cooja/emulatedmote/Radio802154.java
@@ -250,84 +250,6 @@ public abstract class Radio802154 extends Radio implements CustomDataRadio {
         notifyObservers();
     }
 
-    public JPanel getInterfaceVisualizer() {
-        // Location
-        JPanel wrapperPanel = new JPanel(new BorderLayout());
-        JPanel panel = new JPanel(new GridLayout(5, 2));
-
-        final JLabel statusLabel = new JLabel("");
-        final JLabel lastEventLabel = new JLabel("");
-        final JLabel channelLabel = new JLabel("");
-        final JLabel powerLabel = new JLabel("");
-        final JLabel ssLabel = new JLabel("");
-        final JButton updateButton = new JButton("Update");
-
-        panel.add(new JLabel("STATE:"));
-        panel.add(statusLabel);
-
-        panel.add(new JLabel("LAST EVENT:"));
-        panel.add(lastEventLabel);
-
-        panel.add(new JLabel("CHANNEL:"));
-        panel.add(channelLabel);
-
-        panel.add(new JLabel("OUTPUT POWER:"));
-        panel.add(powerLabel);
-
-        panel.add(new JLabel("SIGNAL STRENGTH:"));
-        JPanel smallPanel = new JPanel(new GridLayout(1, 2));
-        smallPanel.add(ssLabel);
-        smallPanel.add(updateButton);
-        panel.add(smallPanel);
-
-        updateButton.addActionListener(new ActionListener() {
-            public void actionPerformed(ActionEvent e) {
-                channelLabel.setText(getChannel() + " (freq=" + getFrequency() + " MHz)");
-                powerLabel.setText(getCurrentOutputPower() + " dBm (indicator=" + getCurrentOutputPowerIndicator() + "/" + getOutputPowerIndicatorMax() + ")");
-                ssLabel.setText(getCurrentSignalStrength() + " dBm");
-            }
-        });
-
-        Observer observer;
-        this.addObserver(observer = new Observer() {
-            public void update(Observable obs, Object obj) {
-                if (isTransmitting()) {
-                    statusLabel.setText("transmitting");
-                } else if (isReceiving()) {
-                    statusLabel.setText("receiving");
-                } else if (radioOn /* mode != CC2420.MODE_TXRX_OFF */) {
-                    statusLabel.setText("listening for traffic");
-                } else {
-                    statusLabel.setText("HW off");
-                }
-
-                lastEventLabel.setText(lastEvent + " @ time=" + lastEventTime);
-
-                channelLabel.setText(getChannel() + " (freq=" + getFrequency() + " MHz)");
-                powerLabel.setText(getCurrentOutputPower() + " dBm (indicator=" + getCurrentOutputPowerIndicator() + "/" + getOutputPowerIndicatorMax() + ")");
-                ssLabel.setText(getCurrentSignalStrength() + " dBm");
-            }
-        });
-
-        observer.update(null, null);
-
-        wrapperPanel.add(BorderLayout.NORTH, panel);
-
-        // Saving observer reference for releaseInterfaceVisualizer
-        wrapperPanel.putClientProperty("intf_obs", observer);
-        return wrapperPanel;
-    }
-
-    public void releaseInterfaceVisualizer(JPanel panel) {
-        Observer observer = (Observer) panel.getClientProperty("intf_obs");
-        if (observer == null) {
-            logger.fatal("Error when releasing panel, observer is null");
-            return;
-        }
-
-        this.deleteObserver(observer);
-    }
-
     public Mote getMote() {
         return mote;
     }
diff --git a/tools/cooja/java/se/sics/cooja/interfaces/ApplicationRadio.java b/tools/cooja/java/se/sics/cooja/interfaces/ApplicationRadio.java
index 17fa1b5cf..6a10f7195 100644
--- a/tools/cooja/java/se/sics/cooja/interfaces/ApplicationRadio.java
+++ b/tools/cooja/java/se/sics/cooja/interfaces/ApplicationRadio.java
@@ -34,6 +34,7 @@ package se.sics.cooja.interfaces;
 import java.awt.BorderLayout;
 import java.awt.event.ActionEvent;
 import java.awt.event.ActionListener;
+import java.util.ArrayList;
 import java.util.Collection;
 import java.util.Observable;
 import java.util.Observer;
@@ -61,7 +62,7 @@ import se.sics.cooja.Simulation;
  *
  * @author Fredrik Osterlind
  */
-public class ApplicationRadio extends Radio {
+public class ApplicationRadio extends Radio implements NoiseSourceRadio {
   private static Logger logger = Logger.getLogger(ApplicationRadio.class);
 
   private Simulation simulation;
@@ -321,7 +322,7 @@ public class ApplicationRadio extends Radio {
     updateButton.addActionListener(new ActionListener() {
       public void actionPerformed(ActionEvent e) {
         ssLabel.setText("Signal strength (not auto-updated): "
-            + getCurrentSignalStrength() + " dBm");
+            + String.format("%1.1f", getCurrentSignalStrength()) + " dBm");
       }
     });
 
@@ -337,7 +338,7 @@ public class ApplicationRadio extends Radio {
 
         lastEventLabel.setText("Last event (time=" + lastEventTime + "): " + lastEvent);
         ssLabel.setText("Signal strength (not auto-updated): "
-            + getCurrentSignalStrength() + " dBm");
+            + String.format("%1.1f", getCurrentSignalStrength()) + " dBm");
         if (getChannel() == -1) {
           channelLabel.setText("Current channel: ALL");
         } else {
@@ -354,17 +355,8 @@ public class ApplicationRadio extends Radio {
     return panel;
   }
 
-  public void releaseInterfaceVisualizer(JPanel panel) {
-    Observer observer = (Observer) panel.getClientProperty("intf_obs");
-    if (observer == null) {
-      logger.fatal("Error when releasing panel, observer is null");
-      return;
-    }
-
-    this.deleteObserver(observer);
-  }
-
   public Collection<Element> getConfigXML() {
+  	/* TODO Save channel info? */
     return null;
   }
 
@@ -390,4 +382,27 @@ public class ApplicationRadio extends Radio {
   public boolean isReceiverOn() {
     return radioOn;
   }
+
+  /* Noise source radio support */
+	public int getNoiseLevel() {
+		return noiseSignal;
+	}
+	public void addNoiseLevelListener(NoiseLevelListener l) {
+		noiseListeners.add(l);
+	}
+	public void removeNoiseLevelListener(NoiseLevelListener l) {
+		noiseListeners.remove(l);
+	}
+
+  /* Noise source radio support (app mote API) */
+	private int noiseSignal = Integer.MIN_VALUE;
+	private ArrayList<NoiseLevelListener> noiseListeners = new ArrayList<NoiseLevelListener>();
+	public void setNoiseLevel(int signal) {
+		this.noiseSignal = signal;
+		for (NoiseLevelListener l: noiseListeners) {
+			l.noiseLevelChanged(this, signal);
+		}
+	}
+  
+  
 }
diff --git a/tools/cooja/java/se/sics/cooja/interfaces/NoiseSourceRadio.java b/tools/cooja/java/se/sics/cooja/interfaces/NoiseSourceRadio.java
new file mode 100644
index 000000000..80d8b1685
--- /dev/null
+++ b/tools/cooja/java/se/sics/cooja/interfaces/NoiseSourceRadio.java
@@ -0,0 +1,56 @@
+/*
+ * Copyright (c) 2011, Swedish Institute of Computer Science. All rights
+ * reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer. 2. Redistributions in
+ * binary form must reproduce the above copyright notice, this list of
+ * conditions and the following disclaimer in the documentation and/or other
+ * materials provided with the distribution. 3. Neither the name of the
+ * Institute nor the names of its contributors may be used to endorse or promote
+ * products derived from this software without specific prior written
+ * permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+package se.sics.cooja.interfaces;
+
+/**
+ * The noise source radio is used to simulate ambient background noise or 
+ * point-sources of external interference (e.g. Wifi basestations).
+ * 
+ * Note that interference generated from these radios are different from 
+ * transmissions; they will not appear in the radio logger but may still
+ * hinder or interfere with ongoing transmissions.
+ * 
+ * Noise source radios require significant processing resources in comparison
+ * to only transmission radios.
+ * 
+ * COOJA's radio mediums may or may not choose to respect noise source radios.
+ * 
+ * @see MRM
+ * @author Fredrik Osterlind
+ */
+public interface NoiseSourceRadio {
+	public int getNoiseLevel();
+	
+	public void addNoiseLevelListener(NoiseLevelListener l);
+	public void removeNoiseLevelListener(NoiseLevelListener l);
+
+	public interface NoiseLevelListener {
+		public void noiseLevelChanged(NoiseSourceRadio radio, int signal);
+	}
+}
diff --git a/tools/cooja/java/se/sics/cooja/interfaces/Radio.java b/tools/cooja/java/se/sics/cooja/interfaces/Radio.java
index 34fd835ae..0800774b7 100644
--- a/tools/cooja/java/se/sics/cooja/interfaces/Radio.java
+++ b/tools/cooja/java/se/sics/cooja/interfaces/Radio.java
@@ -29,21 +29,37 @@
 
 package se.sics.cooja.interfaces;
 
+import java.awt.BorderLayout;
+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
+import java.util.Observable;
+import java.util.Observer;
+
+import javax.swing.Box;
+import javax.swing.JButton;
+import javax.swing.JLabel;
+import javax.swing.JPanel;
+
+import org.apache.log4j.Logger;
+
 import se.sics.cooja.ClassDescription;
 import se.sics.cooja.Mote;
 import se.sics.cooja.MoteInterface;
 import se.sics.cooja.RadioPacket;
+import se.sics.cooja.contikimote.interfaces.ContikiRadio;
 
 /**
- * A Radio represents a mote radio transceiver.
+ * A mote radio transceiver.
  *
- * @see RadioPacket
+ * @see ContikiRadio
  * @see CustomDataRadio
+ * @see NoiseSourceRadio
  *
  * @author Fredrik Osterlind
  */
 @ClassDescription("Radio")
 public abstract class Radio extends MoteInterface {
+  private static Logger logger = Logger.getLogger(Radio.class);
 
   /**
    * Events that radios should notify observers about.
@@ -191,4 +207,66 @@ public abstract class Radio extends MoteInterface {
    */
   public abstract Mote getMote();
 
+
+  public JPanel getInterfaceVisualizer() {
+    JPanel panel = new JPanel(new BorderLayout());
+    Box box = Box.createVerticalBox();
+
+    final JLabel statusLabel = new JLabel("");
+    final JLabel lastEventLabel = new JLabel("");
+    final JLabel channelLabel = new JLabel("");
+    final JLabel ssLabel = new JLabel("");
+    final JButton updateButton = new JButton("Update SS");
+
+    box.add(statusLabel);
+    box.add(lastEventLabel);
+    box.add(ssLabel);
+    box.add(updateButton);
+    box.add(channelLabel);
+
+    updateButton.addActionListener(new ActionListener() {
+      public void actionPerformed(ActionEvent e) {
+        ssLabel.setText("Signal strength (not auto-updated): "
+            + String.format("%1.1f", getCurrentSignalStrength()) + " dBm");
+      }
+    });
+
+    final Observer observer = new Observer() {
+      public void update(Observable obs, Object obj) {
+        if (isTransmitting()) {
+          statusLabel.setText("Transmitting");
+        } else if (isReceiving()) {
+          statusLabel.setText("Receiving");
+        } else {
+          statusLabel.setText("Listening");
+        }
+
+        lastEventLabel.setText("Last event: " + getLastEvent());
+        ssLabel.setText("Signal strength (not auto-updated): "
+            + String.format("%1.1f", getCurrentSignalStrength()) + " dBm");
+        if (getChannel() == -1) {
+          channelLabel.setText("Current channel: ALL");
+        } else {
+          channelLabel.setText("Current channel: " + getChannel());
+        }
+      }
+    };
+    this.addObserver(observer);
+
+    observer.update(null, null);
+
+    panel.add(BorderLayout.NORTH, box);
+    panel.putClientProperty("intf_obs", observer);
+    return panel;
+  }
+
+  public void releaseInterfaceVisualizer(JPanel panel) {
+    Observer observer = (Observer) panel.getClientProperty("intf_obs");
+    if (observer == null) {
+      logger.fatal("Error when releasing panel, observer is null");
+      return;
+    }
+
+    this.deleteObserver(observer);
+  }
 }
diff --git a/tools/csc/csc-compute-neighbor-stats b/tools/csc/csc-compute-neighbor-stats
index 4ccaa1461..a62990d92 100755
--- a/tools/csc/csc-compute-neighbor-stats
+++ b/tools/csc/csc-compute-neighbor-stats
@@ -9,6 +9,9 @@ while(<STDIN>) {
     if(/\<transmitting_range\>([\d.]+)\<\//) {
         $range = $1;
     }
+    if(/\<success_ratio_rx\>([\d.]+)\<\//) {
+        $success_ratio_rx = $1;
+    }
 
     if(/\<x\>([\d.]+)\</) {
         $x[$num] = $1;
@@ -18,7 +21,6 @@ while(<STDIN>) {
         $num++;
     }
 }
-print "Range $range num $num override range $override_range\n";
 
 if($override_range) {
     $range = $override_range;
@@ -27,15 +29,26 @@ if($override_range) {
 $no_neighbors = 0;
 $all_neighbors = 0;
 $total_neighbors = 0;
-# Go through all nodes, find how many are in their range.
+
+# Go through all nodes, find how many are in their range and compute
+# the average reception probability. Make sure we only count each neighbor once.
 for($i = 0; $i < $num; $i++) {
     $neighbors = 0;
     for($j = 0; $j < $num; $j++) {
         if($i != $j) {
-            if(($x[$i] - $x[$j]) * ($x[$i] - $x[$j]) +
-               ($y[$i] - $y[$j]) * ($y[$i] - $y[$j]) <=
-               $range * $range) {
+            $distance2 = ($x[$i] - $x[$j]) * ($x[$i] - $x[$j]) +
+                ($y[$i] - $y[$j]) * ($y[$i] - $y[$j]);
+            $range2 = $range * $range;
+            if($distance2 <= $range2) {
                 $neighbors++;
+
+                $ratio = $distance2 / $range2;
+                if($ratio > 1) {
+                    $reception_probability = 0;
+                } else {
+                    $reception_probability = 1 - $ratio * (1 - $success_ratio_rx);
+                }
+                $reception_probability_sum += $reception_probability;
             }
         }
     }
@@ -47,8 +60,16 @@ for($i = 0; $i < $num; $i++) {
     }
     $total_neighbors += $neighbors;
 }
-print "Num nodes $num, average neighbors " . ($total_neighbors / $num) .
+
+print "$num $range " . ($total_neighbors / $num) .
+    " " . ($no_neighbors / $num) .
+    " " . ($all_neighbors / $num) .
+    " " . ($reception_probability_sum / $total_neighbors) .
+    "\n";
+print "# Range $range number of nodes $num override range $override_range\n";
+print "# Num nodes $num, average neighbors " . ($total_neighbors / $num) .
     ", $no_neighbors nodes (" . (100 * $no_neighbors / $num) .
     "%) have no neighbors, $all_neighbors (" . (100 * $all_neighbors / $num) .
-    "%) have all nodes as neighbors\n";
-
+    "%) have all other nodes as neighbors\n";
+print "# Average reception probability " .
+    ($reception_probability_sum / $total_neighbors) . "\n";