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 Signal-Server
 =============
 
-RF coverage calculator
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+RF coverage calculator
+
+/****************************************************************************\
+*	   Signal Server 1.3.3: Server optimised SPLAT! by Alex Farrant      *
+******************************************************************************
+*	SPLAT! Project started in 1997 by John A. Magliacane, KD2BD 	     *
+*					                                     *
+******************************************************************************
+*         Please consult the SPLAT! documentation for a complete list of     *
+*	     individuals who have contributed to this project. 		     *
+******************************************************************************
+*                                                                            *
+*  This program is free software; you can redistribute it and/or modify it   *
+*  under the terms of the GNU General Public License as published by the     *
+*  Free Software Foundation; either version 2 of the License or any later    *
+*  version.								     *
+* 									     *
+*  This program is distributed in the hope that it will useful, but WITHOUT  *
+*  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or     *
+*  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License     *
+*  for more details.							     *
+*									     *
+******************************************************************************
+* g++ -Wall -O3 -s -lm -fomit-frame-pointer itm.cpp main.cpp -o ss           * 
+\****************************************************************************/
+
+	Usage: Signalserver (options)
+	
+                       -d Directory containing .sdf tiles
+                     -lat Tx Latitude (decimal degrees)
+                     -lon Tx Longitude (decimal degrees) Positive 0-360 
+                     -txh Tx Height (above ground)
+                       -f Tx Frequency (MHz)
+                     -erp Tx Effective Radiated Power (Watts)
+		             -rxh Rx Height(s) (optional. Default=0.1)
+                      -rt Rx Threshold (dB / dBm / dBuV/m)
+                      -hp Horizontal Polarisation (default=vertical)
+		              -gc Ground clutter (feet/meters)
+                      -udt User defined terrain filename
+	                 -dbm Plot Rxd signal power instead of field strength
+	                   -m Metric units of measurement
+                      -te Terrain code 1-6 (optional)
+                      -terdic Terrain dielectric value 2-80 (optional)
+	                  -tercon Terrain conductivity 0.01-0.0001 (optional)
+                      -cl Climate code 1-6 (optional)
+                       -o Filename. Required. 
+                       -R Radius (miles/kilometers)
+                     -res Resolution. Default=1200, Med=600, Low=300
+                     -t Terrain background
+				     -dbg Debug
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