diff --git a/src/Cockpit/radiostack.cxx b/src/Cockpit/radiostack.cxx
index 94a68383a..3c0a91423 100644
--- a/src/Cockpit/radiostack.cxx
+++ b/src/Cockpit/radiostack.cxx
@@ -27,6 +27,9 @@
 #include "radiostack.hxx"
 
 
+FGRadioStack *current_radiostack;
+
+
 // Constructor
 FGRadioStack::FGRadioStack() {
     need_update = true;
@@ -42,17 +45,16 @@ FGRadioStack::~FGRadioStack() {
 void FGRadioStack::update( double lon, double lat, double elev ) {
     need_update = false;
 
-    FGNav n;
-
     // nav1
-    if ( current_navlist->query( lon, lat, elev, nav1_freq,
-				 &n, &nav1_heading, &nav1_dist) ) {
+    FGILS ils;
+    if ( current_ilslist->query( lon, lat, elev, nav1_freq,
+				 &ils, &nav1_heading, &nav1_dist) ) {
 	nav1_inrange = true;
-	nav1_lon = n.get_lon();
-	nav1_lat = n.get_lat();
-	nav1_elev = n.get_elev();
+	nav1_lon = ils.get_loclon();
+	nav1_lat = ils.get_loclat();
+	nav1_elev = ils.get_gselev();
 	cout << "Found a vor station in range" << endl;
-	cout << " id = " << n.get_ident() << endl;
+	cout << " id = " << ils.get_locident() << endl;
 	cout << " heading = " << nav1_heading
 	     << " dist = " << nav1_dist << endl;
     } else {
@@ -61,14 +63,15 @@ void FGRadioStack::update( double lon, double lat, double elev ) {
     }
 
     // nav1
+    FGNav nav;
     if ( current_navlist->query( lon, lat, elev, nav2_freq,
-				 &n, &nav2_heading, &nav2_dist) ) {
+				 &nav, &nav2_heading, &nav2_dist) ) {
 	nav2_inrange = true;
-	nav2_lon = n.get_lon();
-	nav2_lat = n.get_lat();
-	nav2_elev = n.get_elev();
+	nav2_lon = nav.get_lon();
+	nav2_lat = nav.get_lat();
+	nav2_elev = nav.get_elev();
 	cout << "Found a vor station in range" << endl;
-	cout << " id = " << n.get_ident() << endl;
+	cout << " id = " << nav.get_ident() << endl;
 	cout << " heading = " << nav2_heading
 	     << " dist = " << nav2_dist << endl;
     } else {
@@ -79,13 +82,13 @@ void FGRadioStack::update( double lon, double lat, double elev ) {
     // adf
     double junk;
     if ( current_navlist->query( lon, lat, elev, adf_freq,
-				 &n, &adf_heading, &junk) ) {
+				 &nav, &adf_heading, &junk) ) {
 	adf_inrange = true;
-	adf_lon = n.get_lon();
-	adf_lat = n.get_lat();
-	adf_elev = n.get_elev();
+	adf_lon = nav.get_lon();
+	adf_lat = nav.get_lat();
+	adf_elev = nav.get_elev();
 	cout << "Found an adf station in range" << endl;
-	cout << " id = " << n.get_ident() << endl;
+	cout << " id = " << nav.get_ident() << endl;
 	cout << " heading = " << adf_heading
 	     << " dist = " << junk << endl;
     } else {
diff --git a/src/Cockpit/radiostack.hxx b/src/Cockpit/radiostack.hxx
index 0457da753..8cddfddf8 100644
--- a/src/Cockpit/radiostack.hxx
+++ b/src/Cockpit/radiostack.hxx
@@ -109,4 +109,7 @@ public:
 };
 
 
+extern FGRadioStack *current_radiostack;
+
+
 #endif // _FG_RADIOSTACK_HXX
diff --git a/src/Cockpit/steam.cxx b/src/Cockpit/steam.cxx
index 41b5e6b7c..8ec8f211e 100644
--- a/src/Cockpit/steam.cxx
+++ b/src/Cockpit/steam.cxx
@@ -36,6 +36,7 @@
 
 FG_USING_NAMESPACE(std);
 
+#include "radiostack.hxx"
 #include "steam.hxx"
 
 
diff --git a/src/Main/fg_init.cxx b/src/Main/fg_init.cxx
index 3bf3ff11f..33f6fba7c 100644
--- a/src/Main/fg_init.cxx
+++ b/src/Main/fg_init.cxx
@@ -59,6 +59,7 @@
 #include <Airports/simple.hxx>
 #include <Autopilot/autopilot.hxx>
 #include <Cockpit/cockpit.hxx>
+#include <Cockpit/radiostack.hxx>
 #include <FDM/Balloon.h>
 #include <FDM/External.hxx>
 #include <FDM/JSBsim.hxx>
@@ -469,6 +470,21 @@ bool fgInitSubsystems( void ) {
     p_fix.append( "Navaids/default.fix" );
     current_fixlist->init( p_fix );
 
+    // Initialize the underlying radio stack model
+    current_radiostack = new FGRadioStack;
+
+    current_radiostack->set_nav1_freq( 111.70 );
+    current_radiostack->set_nav1_radial( 280.0 );
+
+    current_radiostack->set_nav2_freq( 117.80 );
+    current_radiostack->set_nav2_radial( 068.0 );
+
+    current_radiostack->set_adf_freq( 210.0 );
+
+    current_radiostack->update( cur_fdm_state->get_Longitude(),
+				cur_fdm_state->get_Latitude(),
+				cur_fdm_state->get_Altitude() * FEET_TO_METER );
+
     // Initialize the Cockpit subsystem
     if( fgCockpitInit( &current_aircraft )) {
 	// Cockpit initialized ok.
diff --git a/src/Main/main.cxx b/src/Main/main.cxx
index f1d9ad8f6..61c104f2a 100644
--- a/src/Main/main.cxx
+++ b/src/Main/main.cxx
@@ -78,6 +78,7 @@
 
 #include <Autopilot/autopilot.hxx>
 #include <Cockpit/cockpit.hxx>
+#include <Cockpit/radiostack.hxx>
 #include <Cockpit/steam.hxx>
 #include <FDM/UIUCModel/uiuc_aircraft.h>
 #include <FDM/UIUCModel/uiuc_aircraftdir.h>
@@ -742,6 +743,11 @@ void fgUpdateTimeDepCalcs(int multi_loop, int remainder) {
 
     // Update solar system
     ephem->update( t, cur_fdm_state->get_Latitude() );
+
+    // Update radio stack model
+    current_radiostack->update( cur_fdm_state->get_Longitude(),
+				cur_fdm_state->get_Latitude(),
+				cur_fdm_state->get_Altitude() * FEET_TO_METER );
 }
 
 
diff --git a/src/Navaids/ils.hxx b/src/Navaids/ils.hxx
index c75ae6173..68bf72adc 100644
--- a/src/Navaids/ils.hxx
+++ b/src/Navaids/ils.hxx
@@ -83,6 +83,7 @@ public:
     inline double get_locheading() const { return locheading; }
     inline double get_loclat() const { return loclat; }
     inline double get_loclon() const { return loclon; }
+    inline double get_gselev() const { return gselev; }
     inline double get_gsangle() const { return gsangle; }
     inline double get_gslat() const { return gslat; }
     inline double get_gslon() const { return gslon; }