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) {