diff --git a/projects/VC90/FlightGear/FlightGear.vcproj b/projects/VC90/FlightGear/FlightGear.vcproj
index 364454c1b..fd2548b0a 100644
--- a/projects/VC90/FlightGear/FlightGear.vcproj
+++ b/projects/VC90/FlightGear/FlightGear.vcproj
@@ -3198,6 +3198,30 @@
 				>
 			</File>
 		</Filter>
+		<Filter
+			Name="Lib_Radio"
+			>
+			<File
+				RelativePath="..\..\..\src\Radio\antenna.cxx"
+				>
+			</File>
+			<File
+				RelativePath="..\..\..\src\Radio\antenna.hxx"
+				>
+			</File>
+			<File
+				RelativePath="..\..\..\src\Radio\radio.cxx"
+				>
+			</File>
+			<File
+				RelativePath="..\..\..\src\Radio\radio.hxx"
+				>
+			</File>
+			<File
+				RelativePath="..\..\..\src\Radio\itm.cpp"
+				>
+			</File>
+		</Filter>
 		<Filter
 			Name="Lib_Scenery"
 			>
diff --git a/src/Radio/itm.cpp b/src/Radio/itm.cpp
index 1b970d067..184ac3765 100644
--- a/src/Radio/itm.cpp
+++ b/src/Radio/itm.cpp
@@ -1000,7 +1000,7 @@ double avar(double zzt, double zzl, double zzc, prop_type &prop, propv_type &pro
 			kdv = propv.mdvar;
 			no_situation_variability = kdv >= 20;
 			if (no_situation_variability)
-				no_situation_variability -= 20;
+				kdv -= 20;
 
 			no_location_variability = kdv >= 10;
 			if (no_location_variability)
diff --git a/src/Radio/radio.cxx b/src/Radio/radio.cxx
index 4c80a9fe5..e5719e0dc 100644
--- a/src/Radio/radio.cxx
+++ b/src/Radio/radio.cxx
@@ -362,8 +362,10 @@ double FGRadioTransmission::ITM_calculate_attenuation(SGGeod pos, double freq, i
 
 	_elevations.push_front(point_distance);
 	_elevations.push_front(num_points -1);
-	int size = _elevations.size();
-	double itm_elev[size];
+	
+    int size = _elevations.size();
+    double itm_elev[10000];
+
 	for(int i=0;i<size;i++) {
 		itm_elev[i]=_elevations[i];
 		//cerr << "ITM:: itm_elev: " << _elevations[i] << endl;
@@ -922,7 +924,7 @@ double FGRadioTransmission::watt_to_dbm(double power_watt) {
 }
 
 double FGRadioTransmission::dbm_to_watt(double dbm) {
-	return exp( (dbm-30) * log(10) / 10);	// returns Watts
+	return exp( (dbm-30) * log(10.0) / 10.0);	// returns Watts
 }
 
 double FGRadioTransmission::dbm_to_microvolt(double dbm) {