From: adrian <adrian@localhost.com>
Date: Mon, 9 Jan 2012 17:47:25 +0000 (+0200)
Subject: ITM radio calculations are only considered valid
X-Git-Url: https://git.mxchange.org/?a=commitdiff_plain;h=045912f5a75cdad86388cbc1e022553d361575c3;p=flightgear.git

ITM radio calculations are only considered valid
between 40 MHz and 20 GHz.
Fix for bug which assigns a frequency of 0 MHz to
AI aircraft, thus resulting in infinite values.
---

diff --git a/src/Radio/radio.cxx b/src/Radio/radio.cxx
index 34f43cf69..169cd322f 100644
--- a/src/Radio/radio.cxx
+++ b/src/Radio/radio.cxx
@@ -211,7 +211,8 @@ void FGRadioTransmission::receiveATC(SGGeod tx_pos, double freq, string text, in
 double FGRadioTransmission::ITM_calculate_attenuation(SGGeod pos, double freq, int transmission_type) {
 
 	
-	
+	if((freq < 40.0) || (freq > 20000.0))	// frequency out of recommended range 
+		return -1;
 	/** ITM default parameters 
 		TODO: take them from tile materials (especially for sea)?
 	**/