diff --git a/workspace/Makefile b/workspace/Makefile
index 4591143..510f451 100644
--- a/workspace/Makefile
+++ b/workspace/Makefile
@@ -7,8 +7,8 @@ endif
 
 trials := 10
 packets := 50
-min_snr := -5
-max_snr := 15
+min_snr := -2
+max_snr := 25
 snr_steps := 1
 interval := 100
 
diff --git a/workspace/parse.py b/workspace/parse.py
index 8d9036d..81fba5e 100755
--- a/workspace/parse.py
+++ b/workspace/parse.py
@@ -72,7 +72,7 @@ for enc in sorted(table.keys()):  # sort so legend labels are in order
 plt.ylabel("PDR")
 plt.xlabel("SNR")
 plt.title("Delivery rate vs. SNR for different encoding schemes")
-plt.legend()
+plt.legend(loc="upper left")
 plt.savefig(os.path.join(path,"plot.png"))
 plt.show()
 
diff --git a/workspace/plot.png b/workspace/plot.png
new file mode 100644
index 0000000..c134c4e
Binary files /dev/null and b/workspace/plot.png differ
diff --git a/workspace/wifi_loopback_noGUI.grc b/workspace/wifi_loopback_noGUI.grc
index ff2ecdb..090dead 100644
--- a/workspace/wifi_loopback_noGUI.grc
+++ b/workspace/wifi_loopback_noGUI.grc
@@ -167,7 +167,7 @@
     </param>
     <param>
       <key>const</key>
-      <value>(10**(snr/10.0))**.5</value>
+      <value>((10**(snr/10.0))**0.5)/(2**0.5)</value>
     </param>
     <param>
       <key>affinity</key>
diff --git a/workspace/wifi_loopback_noGUI.py b/workspace/wifi_loopback_noGUI.py
index 7706768..29d3f4c 100755
--- a/workspace/wifi_loopback_noGUI.py
+++ b/workspace/wifi_loopback_noGUI.py
@@ -3,7 +3,7 @@
 ##################################################
 # GNU Radio Python Flow Graph
 # Title: Wifi Loopback Nogui
-# Generated: Sun Nov 15 22:48:19 2015
+# Generated: Sat Nov 21 10:57:29 2015
 ##################################################
 
 import os
@@ -67,7 +67,7 @@ class wifi_loopback_noGUI(gr.top_block):
         	block_tags=False
         )
         self.blocks_null_sink_0 = blocks.null_sink(gr.sizeof_gr_complex*1)
-        self.blocks_multiply_const_vxx_0 = blocks.multiply_const_vcc(((10**(snr/10.0))**.5, ))
+        self.blocks_multiply_const_vxx_0 = blocks.multiply_const_vcc((((10**(snr/10.0))**0.5)/(2**0.5), ))
         self.blocks_file_sink_0_0 = blocks.file_sink(gr.sizeof_char*1, "" + resultdir + "/ofdm_" + str(ntrials) + "_" + str(nmessages) + "_" + str(snr) + "_" + str(encoding) + "_" + str(interval) + ".pcap", False)
         self.blocks_file_sink_0_0.set_unbuffered(True)
 
@@ -140,8 +140,8 @@ class wifi_loopback_noGUI(gr.top_block):
 
     def set_snr(self, snr):
         self.snr = snr
-        self.blocks_multiply_const_vxx_0.set_k(((10**(self.snr/10.0))**.5, ))
         self.blocks_file_sink_0_0.open("" + self.resultdir + "/ofdm_" + str(self.ntrials) + "_" + str(self.nmessages) + "_" + str(self.snr) + "_" + str(self.encoding) + "_" + str(self.interval) + ".pcap")
+        self.blocks_multiply_const_vxx_0.set_k((((10**(self.snr/10.0))**0.5)/(2**0.5), ))
 
     def get_out_buf_size(self):
         return self.out_buf_size