1 files changed, 628 insertions, 312 deletions
diff --git a/gr-uhd/examples/grc/uhd_two_tone_loopback.grc b/gr-uhd/examples/grc/uhd_two_tone_loopback.grc
index 1884dd3ebf..f164d8522a 100644
--- a/gr-uhd/examples/grc/uhd_two_tone_loopback.grc
+++ b/gr-uhd/examples/grc/uhd_two_tone_loopback.grc
@@ -1,6 +1,6 @@
 <?xml version='1.0' encoding='ASCII'?>
 <flow_graph>
-  <timestamp>Sat Nov 10 14:55:26 2012</timestamp>
+  <timestamp>Sat Jul 12 14:48:02 2014</timestamp>
   <block>
     <key>options</key>
     <param>
@@ -29,7 +29,7 @@
     </param>
     <param>
       <key>generate_options</key>
-      <value>wx_gui</value>
+      <value>qt_gui</value>
     </param>
     <param>
       <key>category</key>
@@ -52,8 +52,12 @@
       <value></value>
     </param>
     <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(10, 10)</value>
+      <value>(1, 0)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -64,7 +68,7 @@
     <key>parameter</key>
     <param>
       <key>id</key>
-      <value>tx_gain</value>
+      <value>samp_rate</value>
     </param>
     <param>
       <key>_enabled</key>
@@ -72,7 +76,46 @@
     </param>
     <param>
       <key>label</key>
-      <value>Default TX Gain</value>
+      <value>Sample Rate</value>
+    </param>
+    <param>
+      <key>value</key>
+      <value>500e3</value>
+    </param>
+    <param>
+      <key>type</key>
+      <value>eng_float</value>
+    </param>
+    <param>
+      <key>short_id</key>
+      <value>s</value>
+    </param>
+    <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(523, 0)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+  </block>
+  <block>
+    <key>parameter</key>
+    <param>
+      <key>id</key>
+      <value>rx_gain</value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>label</key>
+      <value>Default RX Gain</value>
     </param>
     <param>
       <key>value</key>
@@ -87,8 +130,51 @@
       <value></value>
     </param>
     <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(999, 11)</value>
+      <value>(1123, 0)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+  </block>
+  <block>
+    <key>parameter</key>
+    <param>
+      <key>id</key>
+      <value>freq_offset</value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>label</key>
+      <value>Rx Frequency Offset</value>
+    </param>
+    <param>
+      <key>value</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>type</key>
+      <value>eng_float</value>
+    </param>
+    <param>
+      <key>short_id</key>
+      <value>o</value>
+    </param>
+    <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(804, 0)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -122,8 +208,12 @@
       <value>f</value>
     </param>
     <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(665, 11)</value>
+      <value>(649, 0)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -134,7 +224,7 @@
     <key>parameter</key>
     <param>
       <key>id</key>
-      <value>freq_offset</value>
+      <value>tx_gain</value>
     </param>
     <param>
       <key>_enabled</key>
@@ -142,7 +232,7 @@
     </param>
     <param>
       <key>label</key>
-      <value>Rx Frequency Offset</value>
+      <value>Default TX Gain</value>
     </param>
     <param>
       <key>value</key>
@@ -154,11 +244,15 @@
     </param>
     <param>
       <key>short_id</key>
-      <value>o</value>
+      <value></value>
+    </param>
+    <param>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(820, 11)</value>
+      <value>(983, 0)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -169,7 +263,7 @@
     <key>parameter</key>
     <param>
       <key>id</key>
-      <value>address1</value>
+      <value>address0</value>
     </param>
     <param>
       <key>_enabled</key>
@@ -177,11 +271,11 @@
     </param>
     <param>
       <key>label</key>
-      <value>IP Address, Dev 1</value>
+      <value>IP Address, Dev 0</value>
     </param>
     <param>
       <key>value</key>
-      <value>addr=192.168.11.2</value>
+      <value>addr=192.168.10.2</value>
     </param>
     <param>
       <key>type</key>
@@ -192,8 +286,12 @@
       <value></value>
     </param>
     <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(353, 14)</value>
+      <value>(177, 0)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -204,7 +302,7 @@
     <key>parameter</key>
     <param>
       <key>id</key>
-      <value>address0</value>
+      <value>address1</value>
     </param>
     <param>
       <key>_enabled</key>
@@ -212,7 +310,7 @@
     </param>
     <param>
       <key>label</key>
-      <value>IP Address, Dev 0</value>
+      <value>IP Address, Dev 1</value>
     </param>
     <param>
       <key>value</key>
@@ -227,8 +325,12 @@
       <value></value>
     </param>
     <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(193, 14)</value>
+      <value>(337, 0)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -236,10 +338,10 @@
     </param>
   </block>
   <block>
-    <key>uhd_usrp_sink</key>
+    <key>uhd_usrp_source</key>
     <param>
       <key>id</key>
-      <value>uhd_usrp_sink_0</value>
+      <value>uhd_usrp_source_0</value>
     </param>
     <param>
       <key>_enabled</key>
@@ -258,8 +360,16 @@
       <value></value>
     </param>
     <param>
+      <key>stream_chans</key>
+      <value>[]</value>
+    </param>
+    <param>
       <key>dev_addr</key>
-      <value>address0</value>
+      <value>address1</value>
+    </param>
+    <param>
+      <key>dev_args</key>
+      <value>""</value>
     </param>
     <param>
       <key>sync</key>
@@ -283,7 +393,7 @@
     </param>
     <param>
       <key>sd_spec0</key>
-      <value></value>
+      <value>B:0</value>
     </param>
     <param>
       <key>clock_source1</key>
@@ -890,8 +1000,24 @@
       <value>0</value>
     </param>
     <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
+      <key>minoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(669, 178)</value>
+      <value>(813, 281)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -899,34 +1025,50 @@
     </param>
   </block>
   <block>
-    <key>parameter</key>
+    <key>analog_noise_source_x</key>
     <param>
       <key>id</key>
-      <value>rx_gain</value>
+      <value>analog_noise_source_x_0</value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>label</key>
-      <value>Default RX Gain</value>
+      <key>type</key>
+      <value>complex</value>
     </param>
     <param>
-      <key>value</key>
-      <value>0</value>
+      <key>noise_type</key>
+      <value>analog.GR_GAUSSIAN</value>
     </param>
     <param>
-      <key>type</key>
-      <value>eng_float</value>
+      <key>amp</key>
+      <value>noise_ampl</value>
     </param>
     <param>
-      <key>short_id</key>
+      <key>seed</key>
+      <value>-42</value>
+    </param>
+    <param>
+      <key>alias</key>
       <value></value>
     </param>
     <param>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
+      <key>minoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(1139, 12)</value>
+      <value>(551, 324)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -934,54 +1076,58 @@
     </param>
   </block>
   <block>
-    <key>variable_slider</key>
+    <key>analog_sig_source_x</key>
     <param>
       <key>id</key>
-      <value>tone1</value>
+      <value>analog_sig_source_x_0</value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>label</key>
-      <value>Tone 1</value>
+      <key>type</key>
+      <value>complex</value>
     </param>
     <param>
-      <key>value</key>
-      <value>50e3</value>
+      <key>samp_rate</key>
+      <value>samp_rate</value>
     </param>
     <param>
-      <key>min</key>
-      <value>-samp_rate/2</value>
+      <key>waveform</key>
+      <value>analog.GR_COS_WAVE</value>
     </param>
     <param>
-      <key>max</key>
-      <value>samp_rate/2</value>
+      <key>freq</key>
+      <value>tone1</value>
+    </param>
+    <param>
+      <key>amp</key>
+      <value>tone_ampl</value>
     </param>
     <param>
-      <key>num_steps</key>
-      <value>100</value>
+      <key>offset</key>
+      <value>0</value>
     </param>
     <param>
-      <key>style</key>
-      <value>wx.SL_HORIZONTAL</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>converver</key>
-      <value>float_converter</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>grid_pos</key>
-      <value>0, 0, 1, 4</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>notebook</key>
-      <value></value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(161, 484)</value>
+      <value>(541, 98)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -989,54 +1135,58 @@
     </param>
   </block>
   <block>
-    <key>variable_slider</key>
+    <key>analog_sig_source_x</key>
     <param>
       <key>id</key>
-      <value>tone2</value>
+      <value>analog_sig_source_x_1</value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>label</key>
-      <value>Tone 2</value>
+      <key>type</key>
+      <value>complex</value>
     </param>
     <param>
-      <key>value</key>
-      <value>75e3</value>
+      <key>samp_rate</key>
+      <value>samp_rate</value>
     </param>
     <param>
-      <key>min</key>
-      <value>-samp_rate/2</value>
+      <key>waveform</key>
+      <value>analog.GR_COS_WAVE</value>
     </param>
     <param>
-      <key>max</key>
-      <value>samp_rate/2</value>
+      <key>freq</key>
+      <value>tone2</value>
     </param>
     <param>
-      <key>num_steps</key>
-      <value>100</value>
+      <key>amp</key>
+      <value>tone_ampl</value>
     </param>
     <param>
-      <key>style</key>
-      <value>wx.SL_HORIZONTAL</value>
+      <key>offset</key>
+      <value>0</value>
     </param>
     <param>
-      <key>converver</key>
-      <value>float_converter</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>grid_pos</key>
-      <value>0, 4, 1, 4</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>notebook</key>
-      <value></value>
+      <key>minoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(308, 483)</value>
+      <value>(542, 209)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -1044,54 +1194,46 @@
     </param>
   </block>
   <block>
-    <key>variable_slider</key>
+    <key>blocks_add_xx</key>
     <param>
       <key>id</key>
-      <value>tun_tx_gain</value>
+      <value>blocks_add_xx</value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>label</key>
-      <value>UHD TX Gain</value>
-    </param>
-    <param>
-      <key>value</key>
-      <value>tx_gain</value>
-    </param>
-    <param>
-      <key>min</key>
-      <value>0</value>
+      <key>type</key>
+      <value>complex</value>
     </param>
     <param>
-      <key>max</key>
-      <value>20</value>
+      <key>num_inputs</key>
+      <value>3</value>
     </param>
     <param>
-      <key>num_steps</key>
-      <value>100</value>
+      <key>vlen</key>
+      <value>1</value>
     </param>
     <param>
-      <key>style</key>
-      <value>wx.SL_HORIZONTAL</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>converver</key>
-      <value>float_converter</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>grid_pos</key>
-      <value></value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>notebook</key>
-      <value></value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(655, 486)</value>
+      <value>(806, 134)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -1099,109 +1241,238 @@
     </param>
   </block>
   <block>
-    <key>variable_slider</key>
+    <key>qtgui_freq_sink_x</key>
     <param>
       <key>id</key>
-      <value>tun_freq</value>
+      <value>qtgui_freq_sink_x_0</value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>label</key>
-      <value>Freq (Hz)</value>
+      <key>type</key>
+      <value>complex</value>
     </param>
     <param>
-      <key>value</key>
-      <value>freq</value>
+      <key>name</key>
+      <value>""</value>
     </param>
     <param>
-      <key>min</key>
-      <value>2.4e9</value>
+      <key>fftsize</key>
+      <value>1024</value>
     </param>
     <param>
-      <key>max</key>
-      <value>2.5e9</value>
+      <key>wintype</key>
+      <value>firdes.WIN_BLACKMAN_hARRIS</value>
+    </param>
+    <param>
+      <key>fc</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>bw</key>
+      <value>samp_rate</value>
+    </param>
+    <param>
+      <key>autoscale</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>average</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>num_steps</key>
-      <value>100</value>
+      <key>ymin</key>
+      <value>-140</value>
     </param>
     <param>
-      <key>style</key>
-      <value>wx.SL_HORIZONTAL</value>
+      <key>ymax</key>
+      <value>10</value>
+    </param>
+    <param>
+      <key>nconnections</key>
+      <value>1</value>
     </param>
     <param>
-      <key>converver</key>
-      <value>float_converter</value>
+      <key>update_time</key>
+      <value>0.10</value>
     </param>
     <param>
-      <key>grid_pos</key>
+      <key>gui_hint</key>
+      <value>2,0,1,4</value>
+    </param>
+    <param>
+      <key>label1</key>
       <value></value>
     </param>
     <param>
-      <key>notebook</key>
+      <key>width1</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>color1</key>
+      <value>"blue"</value>
+    </param>
+    <param>
+      <key>alpha1</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>label2</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(514, 487)</value>
+      <key>width2</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>color2</key>
+      <value>"red"</value>
     </param>
-  </block>
-  <block>
-    <key>variable_slider</key>
     <param>
-      <key>id</key>
-      <value>tun_rx_gain</value>
+      <key>alpha2</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>label3</key>
+      <value></value>
     </param>
     <param>
-      <key>label</key>
-      <value>UHD RX Gain</value>
+      <key>width3</key>
+      <value>1</value>
     </param>
     <param>
-      <key>value</key>
-      <value>rx_gain</value>
+      <key>color3</key>
+      <value>"green"</value>
     </param>
     <param>
-      <key>min</key>
-      <value>0</value>
+      <key>alpha3</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>max</key>
-      <value>20</value>
+      <key>label4</key>
+      <value></value>
+    </param>
+    <param>
+      <key>width4</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>color4</key>
+      <value>"black"</value>
+    </param>
+    <param>
+      <key>alpha4</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>label5</key>
+      <value></value>
+    </param>
+    <param>
+      <key>width5</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>color5</key>
+      <value>"cyan"</value>
+    </param>
+    <param>
+      <key>alpha5</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>label6</key>
+      <value></value>
     </param>
     <param>
-      <key>num_steps</key>
-      <value>100</value>
+      <key>width6</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>color6</key>
+      <value>"magenta"</value>
+    </param>
+    <param>
+      <key>alpha6</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>label7</key>
+      <value></value>
+    </param>
+    <param>
+      <key>width7</key>
+      <value>1</value>
     </param>
     <param>
-      <key>style</key>
-      <value>wx.SL_HORIZONTAL</value>
+      <key>color7</key>
+      <value>"yellow"</value>
     </param>
     <param>
-      <key>converver</key>
-      <value>float_converter</value>
+      <key>alpha7</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>grid_pos</key>
+      <key>label8</key>
       <value></value>
     </param>
     <param>
-      <key>notebook</key>
+      <key>width8</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>color8</key>
+      <value>"dark red"</value>
+    </param>
+    <param>
+      <key>alpha8</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>label9</key>
+      <value></value>
+    </param>
+    <param>
+      <key>width9</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>color9</key>
+      <value>"dark green"</value>
+    </param>
+    <param>
+      <key>alpha9</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>label10</key>
+      <value></value>
+    </param>
+    <param>
+      <key>width10</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>color10</key>
+      <value>"dark blue"</value>
+    </param>
+    <param>
+      <key>alpha10</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
+      <key>affinity</key>
       <value></value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(781, 487)</value>
+      <value>(1086, 281)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -1209,10 +1480,10 @@
     </param>
   </block>
   <block>
-    <key>uhd_usrp_source</key>
+    <key>uhd_usrp_sink</key>
     <param>
       <key>id</key>
-      <value>uhd_usrp_source_0</value>
+      <value>uhd_usrp_sink_0</value>
     </param>
     <param>
       <key>_enabled</key>
@@ -1231,8 +1502,16 @@
       <value></value>
     </param>
     <param>
+      <key>stream_chans</key>
+      <value>[]</value>
+    </param>
+    <param>
       <key>dev_addr</key>
-      <value>address1</value>
+      <value>address0</value>
+    </param>
+    <param>
+      <key>dev_args</key>
+      <value>""</value>
     </param>
     <param>
       <key>sync</key>
@@ -1256,7 +1535,7 @@
     </param>
     <param>
       <key>sd_spec0</key>
-      <value></value>
+      <value>A:0</value>
     </param>
     <param>
       <key>clock_source1</key>
@@ -1863,8 +2142,20 @@
       <value>0</value>
     </param>
     <param>
+      <key>len_tag_name</key>
+      <value></value>
+    </param>
+    <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(672, 320)</value>
+      <value>(949, 140)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -1872,10 +2163,10 @@
     </param>
   </block>
   <block>
-    <key>variable_slider</key>
+    <key>variable_qtgui_range</key>
     <param>
       <key>id</key>
-      <value>tone_ampl</value>
+      <value>tun_freq</value>
     </param>
     <param>
       <key>_enabled</key>
@@ -1883,43 +2174,47 @@
     </param>
     <param>
       <key>label</key>
-      <value>Tone Ampl</value>
+      <value>UHD Freq (Hz)</value>
     </param>
     <param>
       <key>value</key>
-      <value>0.15</value>
+      <value>2.45e9</value>
     </param>
     <param>
-      <key>min</key>
-      <value>0</value>
+      <key>start</key>
+      <value>2.4e9</value>
+    </param>
+    <param>
+      <key>stop</key>
+      <value>2.5e9</value>
     </param>
     <param>
-      <key>max</key>
+      <key>step</key>
       <value>1</value>
     </param>
     <param>
-      <key>num_steps</key>
-      <value>100</value>
+      <key>widget</key>
+      <value>counter_slider</value>
     </param>
     <param>
-      <key>style</key>
-      <value>wx.SL_VERTICAL</value>
+      <key>orient</key>
+      <value>Qt.Horizontal</value>
     </param>
     <param>
-      <key>converver</key>
-      <value>float_converter</value>
+      <key>min_len</key>
+      <value>200</value>
     </param>
     <param>
-      <key>grid_pos</key>
-      <value>1, 0, 2, 1</value>
+      <key>gui_hint</key>
+      <value>3,0,1,4</value>
     </param>
     <param>
-      <key>notebook</key>
+      <key>alias</key>
       <value></value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(14, 485)</value>
+      <value>(80, 431)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -1927,10 +2222,10 @@
     </param>
   </block>
   <block>
-    <key>variable_slider</key>
+    <key>variable_qtgui_range</key>
     <param>
       <key>id</key>
-      <value>noise_ampl</value>
+      <value>tone1</value>
     </param>
     <param>
       <key>_enabled</key>
@@ -1938,43 +2233,47 @@
     </param>
     <param>
       <key>label</key>
-      <value>Noise Ampl</value>
+      <value>Tone 1</value>
     </param>
     <param>
       <key>value</key>
-      <value>0.1</value>
+      <value>samp_rate/4</value>
     </param>
     <param>
-      <key>min</key>
-      <value>0</value>
+      <key>start</key>
+      <value>-samp_rate/2</value>
+    </param>
+    <param>
+      <key>stop</key>
+      <value>samp_rate/2</value>
     </param>
     <param>
-      <key>max</key>
+      <key>step</key>
       <value>1</value>
     </param>
     <param>
-      <key>num_steps</key>
-      <value>100</value>
+      <key>widget</key>
+      <value>counter_slider</value>
     </param>
     <param>
-      <key>style</key>
-      <value>wx.SL_VERTICAL</value>
+      <key>orient</key>
+      <value>Qt.Horizontal</value>
     </param>
     <param>
-      <key>converver</key>
-      <value>float_converter</value>
+      <key>min_len</key>
+      <value>200</value>
     </param>
     <param>
-      <key>grid_pos</key>
-      <value>1, 1, 2, 1</value>
+      <key>gui_hint</key>
+      <value>0,0,1,2</value>
     </param>
     <param>
-      <key>notebook</key>
+      <key>alias</key>
       <value></value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(15, 335)</value>
+      <value>(1, 131)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -1982,125 +2281,117 @@
     </param>
   </block>
   <block>
-    <key>wxgui_fftsink2</key>
+    <key>variable_qtgui_range</key>
     <param>
       <key>id</key>
-      <value>wxgui_fftsink2</value>
+      <value>noise_ampl</value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>type</key>
-      <value>complex</value>
-    </param>
-    <param>
-      <key>title</key>
-      <value>FFT Plot</value>
+      <key>label</key>
+      <value>Noise Amplitude</value>
     </param>
     <param>
-      <key>samp_rate</key>
-      <value>samp_rate</value>
+      <key>value</key>
+      <value>0.1</value>
     </param>
     <param>
-      <key>baseband_freq</key>
+      <key>start</key>
       <value>0</value>
     </param>
     <param>
-      <key>y_per_div</key>
-      <value>10</value>
+      <key>stop</key>
+      <value>1</value>
     </param>
     <param>
-      <key>y_divs</key>
-      <value>10</value>
+      <key>step</key>
+      <value>.001</value>
     </param>
     <param>
-      <key>ref_level</key>
-      <value>0</value>
+      <key>widget</key>
+      <value>counter_slider</value>
     </param>
     <param>
-      <key>ref_scale</key>
-      <value>2.0</value>
+      <key>orient</key>
+      <value>Qt.Horizontal</value>
     </param>
     <param>
-      <key>fft_size</key>
-      <value>512*2</value>
+      <key>min_len</key>
+      <value>200</value>
     </param>
     <param>
-      <key>fft_rate</key>
-      <value>15</value>
+      <key>gui_hint</key>
+      <value>1,0,1,2</value>
     </param>
     <param>
-      <key>peak_hold</key>
-      <value>False</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>average</key>
-      <value>False</value>
+      <key>_coordinate</key>
+      <value>(0, 283)</value>
     </param>
     <param>
-      <key>avg_alpha</key>
+      <key>_rotation</key>
       <value>0</value>
     </param>
+  </block>
+  <block>
+    <key>variable_qtgui_range</key>
     <param>
-      <key>win</key>
-      <value>window.blackmanharris</value>
-    </param>
-    <param>
-      <key>win_size</key>
-      <value></value>
+      <key>id</key>
+      <value>tun_tx_gain</value>
     </param>
     <param>
-      <key>grid_pos</key>
-      <value>1, 2, 2, 4</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>notebook</key>
-      <value></value>
+      <key>label</key>
+      <value>UHD Tx Gain</value>
     </param>
     <param>
-      <key>freqvar</key>
-      <value>None</value>
+      <key>value</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1114, 264)</value>
+      <key>start</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>stop</key>
+      <value>20</value>
     </param>
-  </block>
-  <block>
-    <key>parameter</key>
     <param>
-      <key>id</key>
-      <value>samp_rate</value>
+      <key>step</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>widget</key>
+      <value>counter_slider</value>
     </param>
     <param>
-      <key>label</key>
-      <value>Sample Rate</value>
+      <key>orient</key>
+      <value>Qt.Horizontal</value>
     </param>
     <param>
-      <key>value</key>
-      <value>500e3</value>
+      <key>min_len</key>
+      <value>200</value>
     </param>
     <param>
-      <key>type</key>
-      <value>eng_float</value>
+      <key>gui_hint</key>
+      <value>4,0,1,2</value>
     </param>
     <param>
-      <key>short_id</key>
-      <value>s</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(539, 11)</value>
+      <value>(-1, 573)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -2108,42 +2399,58 @@
     </param>
   </block>
   <block>
-    <key>analog_sig_source_x</key>
+    <key>variable_qtgui_range</key>
     <param>
       <key>id</key>
-      <value>analog_sig_source_x_0</value>
+      <value>tone2</value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>type</key>
-      <value>complex</value>
+      <key>label</key>
+      <value>Tone 2</value>
     </param>
     <param>
-      <key>samp_rate</key>
-      <value>samp_rate</value>
+      <key>value</key>
+      <value>samp_rate/5</value>
     </param>
     <param>
-      <key>waveform</key>
-      <value>analog.GR_COS_WAVE</value>
+      <key>start</key>
+      <value>-samp_rate/2</value>
     </param>
     <param>
-      <key>freq</key>
-      <value>tone1</value>
+      <key>stop</key>
+      <value>samp_rate/2</value>
     </param>
     <param>
-      <key>amp</key>
-      <value>tone_ampl</value>
+      <key>step</key>
+      <value>1</value>
     </param>
     <param>
-      <key>offset</key>
-      <value>0</value>
+      <key>widget</key>
+      <value>counter_slider</value>
+    </param>
+    <param>
+      <key>orient</key>
+      <value>Qt.Horizontal</value>
+    </param>
+    <param>
+      <key>min_len</key>
+      <value>200</value>
+    </param>
+    <param>
+      <key>gui_hint</key>
+      <value>0,2,1,2</value>
+    </param>
+    <param>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(264, 136)</value>
+      <value>(126, 132)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -2151,42 +2458,58 @@
     </param>
   </block>
   <block>
-    <key>analog_sig_source_x</key>
+    <key>variable_qtgui_range</key>
     <param>
       <key>id</key>
-      <value>analog_sig_source_x_1</value>
+      <value>tone_ampl</value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>type</key>
-      <value>complex</value>
+      <key>label</key>
+      <value>Tone Amplitude</value>
     </param>
     <param>
-      <key>samp_rate</key>
-      <value>samp_rate</value>
+      <key>value</key>
+      <value>0.15</value>
     </param>
     <param>
-      <key>waveform</key>
-      <value>analog.GR_COS_WAVE</value>
+      <key>start</key>
+      <value>0</value>
     </param>
     <param>
-      <key>freq</key>
-      <value>tone2</value>
+      <key>stop</key>
+      <value>1</value>
     </param>
     <param>
-      <key>amp</key>
-      <value>tone_ampl</value>
+      <key>step</key>
+      <value>.001</value>
     </param>
     <param>
-      <key>offset</key>
-      <value>0</value>
+      <key>widget</key>
+      <value>counter_slider</value>
+    </param>
+    <param>
+      <key>orient</key>
+      <value>Qt.Horizontal</value>
+    </param>
+    <param>
+      <key>min_len</key>
+      <value>200</value>
+    </param>
+    <param>
+      <key>gui_hint</key>
+      <value>1,2,1,2</value>
+    </param>
+    <param>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(265, 247)</value>
+      <value>(152, 286)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -2194,65 +2517,58 @@
     </param>
   </block>
   <block>
-    <key>blocks_add_xx</key>
+    <key>variable_qtgui_range</key>
     <param>
       <key>id</key>
-      <value>blocks_add_xx</value>
+      <value>tun_rx_gain</value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>type</key>
-      <value>complex</value>
-    </param>
-    <param>
-      <key>num_inputs</key>
-      <value>3</value>
+      <key>label</key>
+      <value>UHD Rx Gain</value>
     </param>
     <param>
-      <key>vlen</key>
-      <value>1</value>
+      <key>value</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(529, 172)</value>
+      <key>start</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>stop</key>
+      <value>20</value>
     </param>
-  </block>
-  <block>
-    <key>analog_noise_source_x</key>
     <param>
-      <key>id</key>
-      <value>analog_noise_source_x_0</value>
+      <key>step</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>widget</key>
+      <value>counter_slider</value>
     </param>
     <param>
-      <key>type</key>
-      <value>complex</value>
+      <key>orient</key>
+      <value>Qt.Horizontal</value>
     </param>
     <param>
-      <key>noise_type</key>
-      <value>analog.GR_GAUSSIAN</value>
+      <key>min_len</key>
+      <value>200</value>
     </param>
     <param>
-      <key>amp</key>
-      <value>noise_ampl</value>
+      <key>gui_hint</key>
+      <value>4,2,1,2</value>
     </param>
     <param>
-      <key>seed</key>
-      <value>-42</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(288, 359)</value>
+      <value>(120, 571)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -2260,14 +2576,8 @@
     </param>
   </block>
   <connection>
-    <source_block_id>blocks_add_xx</source_block_id>
-    <sink_block_id>uhd_usrp_sink_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
     <source_block_id>uhd_usrp_source_0</source_block_id>
-    <sink_block_id>wxgui_fftsink2</sink_block_id>
+    <sink_block_id>qtgui_freq_sink_x_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
@@ -2289,4 +2599,10 @@
     <source_key>0</source_key>
     <sink_key>2</sink_key>
   </connection>
+  <connection>
+    <source_block_id>blocks_add_xx</source_block_id>
+    <sink_block_id>uhd_usrp_sink_0</sink_block_id>
+    <source_key>0</source_key>
+    <sink_key>0</sink_key>
+  </connection>
 </flow_graph>