diff --git a/groundstation/auto-tune.py b/groundstation/auto-tune.py
index 2f071ea1..df982d1b 100644
--- a/groundstation/auto-tune.py
+++ b/groundstation/auto-tune.py
@@ -5,12 +5,12 @@ import sys
 
 if __name__ == "__main__":
 	graph = 'n'
-	center_frequency = 434.9e6
+	center_frequency = 434.7e6
 	if (len(sys.argv)) > 0:
 		print("There are arguments!")
-		center_frequency = float(sys.argv[1])
+		center_frequency = float(sys.argv[1]) - 200e6
 		if (center_frequency == 0):
-			center_frequency = 434.9e6
+			center_frequency = 434.7e6
 		if (len(sys.argv)) > 1:
 			print("There are more arguments")
 			if (sys.argv[2] == 'g') or (sys.argv[2] == '-g'):