diff --git a/src/ATC/trafficcontrol.cxx b/src/ATC/trafficcontrol.cxx
index 3e27f9190..507c8f113 100644
--- a/src/ATC/trafficcontrol.cxx
+++ b/src/ATC/trafficcontrol.cxx
@@ -47,6 +47,7 @@
 #include <Airports/groundnetwork.hxx>
 #include <Airports/dynamics.hxx>
 #include <Airports/simple.hxx>
+#include <Radio/radio.hxx>
 
 using std::sort;
 
@@ -760,6 +761,7 @@ void FGATCController::transmit(FGTrafficRecord * rec, FGAirportDynamics *parent,
 			                     rec->getLatitude(), sender_alt );
 			      	}
             		radio->receiveText(sender_pos, stationFreq, text, ground_to_air);
+            		delete radio;
             	}
             	else {
             		fgSetString("/sim/messages/atc", text.c_str());
diff --git a/src/Radio/itm.cpp b/src/Radio/itm.cpp
index 20862355b..9c2f010fc 100644
--- a/src/Radio/itm.cpp
+++ b/src/Radio/itm.cpp
@@ -37,7 +37,7 @@
 #include <math.h>
 #include <complex>
 #include <assert.h>
-
+#include <stdio.h>
 
 const float THIRD = (1.0/3.0);
 const float f_0 = 47.7; // 47.7 MHz from [Alg 1.1], to convert frequency into wavenumber and vica versa
diff --git a/src/Radio/radio.cxx b/src/Radio/radio.cxx
index 5ce656f6c..83068a285 100644
--- a/src/Radio/radio.cxx
+++ b/src/Radio/radio.cxx
@@ -25,7 +25,7 @@
 #include <math.h>
 #include <stdlib.h>
 #include <deque>
-
+#include "radio.hxx"
 #include <Scenery/scenery.hxx>
 
 #define WITH_POINT_TO_POINT 1
@@ -132,7 +132,8 @@ double FGRadio::ITM_calculate_attenuation(SGGeod pos, double freq,
 	char strmode[150];
 	int errnum;
 	
-	double tx_pow,ant_gain;
+	double tx_pow = _transmitter_power;
+	double ant_gain = _antenna_gain;
 	double signal = 0.0;
 	
 	if(transmission_type == 1)
@@ -269,7 +270,7 @@ double FGRadio::ITM_calculate_attenuation(SGGeod pos, double freq,
 	// frequency in the middle of the bandplan, more accuracy is not necessary
 	double fz_clr= 8.657 * sqrt(distance_m / 0.125);
 	
-	// TODO: If we clear the first Fresnel zone, we are into line of sight teritory
+	// TODO: If we clear the first Fresnel zone, we are into line of sight territory
 
 	// else we need to calculate point to point link loss
 	if((transmission_type == 3) || (transmission_type == 4)) {
diff --git a/src/Radio/radio.hxx b/src/Radio/radio.hxx
index 7915d2e77..91d028047 100644
--- a/src/Radio/radio.hxx
+++ b/src/Radio/radio.hxx
@@ -45,7 +45,7 @@ private:
 	double _antenna_gain;
 	
 	int _propagation_model; /// 0 none, 1 round Earth, 2 ITM
-	double ITM_calculate_attenuation(SGGeod tx_pos, double freq, int ground_to_air)
+	double ITM_calculate_attenuation(SGGeod tx_pos, double freq, int ground_to_air);
 	
 public: