diff --git a/peak_det_eval.grc b/peak_det_eval.grc
index f563229..ed3ad39 100644
--- a/peak_det_eval.grc
+++ b/peak_det_eval.grc
@@ -286,7 +286,7 @@
     </param>
     <param>
       <key>value</key>
-      <value>0.5</value>
+      <value>0.1</value>
     </param>
     <param>
       <key>_enabled</key>
@@ -451,6 +451,53 @@
       <value>firdes.WIN_HAMMING</value>
     </param>
   </block>
+  <block>
+    <key>variable_low_pass_filter_taps</key>
+    <param>
+      <key>beta</key>
+      <value>6.76</value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>cutoff_freq</key>
+      <value>audio_rate</value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(24, 1068)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>gain</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>variable_low_pass_filter_taps_1</value>
+    </param>
+    <param>
+      <key>samp_rate</key>
+      <value>channel_rate</value>
+    </param>
+    <param>
+      <key>width</key>
+      <value>100</value>
+    </param>
+    <param>
+      <key>win</key>
+      <value>firdes.WIN_HAMMING</value>
+    </param>
+  </block>
   <block>
     <key>variable_qtgui_check_box</key>
     <param>
@@ -557,6 +604,65 @@
       <value>float</value>
     </param>
   </block>
+  <block>
+    <key>analog_agc_xx</key>
+    <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(552, 164)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>gain</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>analog_agc_xx_1</value>
+    </param>
+    <param>
+      <key>max_gain</key>
+      <value>50</value>
+    </param>
+    <param>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>minoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>rate</key>
+      <value>1e-2</value>
+    </param>
+    <param>
+      <key>reference</key>
+      <value>0.05</value>
+    </param>
+    <param>
+      <key>type</key>
+      <value>complex</value>
+    </param>
+  </block>
   <block>
     <key>analog_am_demod_cf</key>
     <param>
@@ -1952,7 +2058,7 @@
     </param>
     <param>
       <key>taps</key>
-      <value>1</value>
+      <value>variable_low_pass_filter_taps_1</value>
     </param>
     <param>
       <key>type</key>
@@ -1975,11 +2081,11 @@
     </param>
     <param>
       <key>_enabled</key>
-      <value>0</value>
+      <value>1</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1152, 472)</value>
+      <value>(576, 80)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -2134,17 +2240,17 @@
       <key>minoutbuf</key>
       <value>0</value>
     </param>
-    <param>
-      <key>peak_height_min</key>
-      <value>peak_thresh_dB</value>
-    </param>
     <param>
       <key>peak_width_max</key>
-      <value>55</value>
+      <value>80000</value>
     </param>
     <param>
       <key>peak_width_min</key>
-      <value>5</value>
+      <value>40000</value>
+    </param>
+    <param>
+      <key>peak_height_min</key>
+      <value>peak_thresh_dB</value>
     </param>
     <param>
       <key>vlen</key>
@@ -2159,7 +2265,7 @@
     </param>
     <param>
       <key>alpha_s</key>
-      <value>0.2</value>
+      <value>0.4</value>
     </param>
     <param>
       <key>bandwidth</key>
@@ -2209,17 +2315,17 @@
       <key>minoutbuf</key>
       <value>0</value>
     </param>
-    <param>
-      <key>peak_height_min</key>
-      <value>peak_thresh_dB</value>
-    </param>
     <param>
       <key>peak_width_max</key>
-      <value>55</value>
+      <value>2500</value>
     </param>
     <param>
       <key>peak_width_min</key>
-      <value>5</value>
+      <value>2000</value>
+    </param>
+    <param>
+      <key>peak_height_min</key>
+      <value>peak_thresh_dB</value>
     </param>
     <param>
       <key>vlen</key>
@@ -2403,7 +2509,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1264, 56)</value>
+      <value>(1272, 28)</value>
     </param>
     <param>
       <key>gui_hint</key>
@@ -2603,7 +2709,7 @@
     </param>
     <param>
       <key>showports</key>
-      <value>True</value>
+      <value>False</value>
     </param>
     <param>
       <key>freqhalf</key>
@@ -4956,6 +5062,18 @@
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
+  <connection>
+    <source_block_id>analog_agc_xx_1</source_block_id>
+    <sink_block_id>analog_am_demod_cf_0</sink_block_id>
+    <source_key>0</source_key>
+    <sink_key>0</sink_key>
+  </connection>
+  <connection>
+    <source_block_id>analog_agc_xx_1</source_block_id>
+    <sink_block_id>qtgui_freq_sink_x_0</sink_block_id>
+    <source_key>0</source_key>
+    <sink_key>0</sink_key>
+  </connection>
   <connection>
     <source_block_id>analog_am_demod_cf_0</source_block_id>
     <sink_block_id>dc_blocker_xx_0</sink_block_id>
@@ -5120,13 +5238,7 @@
   </connection>
   <connection>
     <source_block_id>freq_xlating_fir_filter_xxx_0_0</source_block_id>
-    <sink_block_id>analog_am_demod_cf_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>freq_xlating_fir_filter_xxx_0_0</source_block_id>
-    <sink_block_id>qtgui_freq_sink_x_0</sink_block_id>
+    <sink_block_id>analog_agc_xx_1</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
@@ -5137,16 +5249,22 @@
     <sink_key>freq</sink_key>
   </connection>
   <connection>
-    <source_block_id>jay_message_filter_0_0</source_block_id>
-    <sink_block_id>freq_xlating_fir_filter_xxx_0_0</sink_block_id>
+    <source_block_id>jay_message_filter_0</source_block_id>
+    <sink_block_id>jay_message_debug_0</sink_block_id>
+    <source_key>out</source_key>
+    <sink_key>control</sink_key>
+  </connection>
+  <connection>
+    <source_block_id>jay_message_filter_0</source_block_id>
+    <sink_block_id>qtgui_freq_sink_x_0</sink_block_id>
     <source_key>out</source_key>
     <sink_key>freq</sink_key>
   </connection>
   <connection>
     <source_block_id>jay_message_filter_0_0</source_block_id>
-    <sink_block_id>jay_message_debug_0</sink_block_id>
+    <sink_block_id>freq_xlating_fir_filter_xxx_0_0</sink_block_id>
     <source_key>out</source_key>
-    <sink_key>control</sink_key>
+    <sink_key>freq</sink_key>
   </connection>
   <connection>
     <source_block_id>jay_peak_detect_1</source_block_id>