diff --git a/apps/fft-multi-decoder_auto_freqs_slider-update.grc b/apps/fft-multi-decoder_auto_freqs_slider-update.grc
index 6573564..a7952c3 100644
--- a/apps/fft-multi-decoder_auto_freqs_slider-update.grc
+++ b/apps/fft-multi-decoder_auto_freqs_slider-update.grc
@@ -3034,7 +3034,7 @@ class blk(gr.sync_block):  # other base classes are basic_block, decim_block, in
     </param>
   </block>
   <block>
-    <key>multirds_max_freq</key>
+    <key>multirds_station_search</key>
     <param>
       <key>alias</key>
       <value></value>
@@ -3065,7 +3065,7 @@ class blk(gr.sync_block):  # other base classes are basic_block, decim_block, in
     </param>
     <param>
       <key>id</key>
-      <value>multirds_max_freq_0</value>
+      <value>multirds_station_search_0</value>
     </param>
     <param>
       <key>maxoutbuf</key>
@@ -6462,7 +6462,7 @@ class blk(gr.sync_block):  # other base classes are basic_block, decim_block, in
   </connection>
   <connection>
     <source_block_id>blocks_complex_to_mag_squared_0</source_block_id>
-    <sink_block_id>multirds_max_freq_0</sink_block_id>
+    <sink_block_id>multirds_station_search_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
@@ -6803,62 +6803,62 @@ class blk(gr.sync_block):  # other base classes are basic_block, decim_block, in
     <sink_key>in8</sink_key>
   </connection>
   <connection>
-    <source_block_id>multirds_max_freq_0</source_block_id>
+    <source_block_id>multirds_station_search_0</source_block_id>
     <sink_block_id>multirds_variable_setter_0</sink_block_id>
     <source_key>out</source_key>
     <sink_key>in</sink_key>
   </connection>
   <connection>
-    <source_block_id>multirds_max_freq_0</source_block_id>
+    <source_block_id>multirds_station_search_0</source_block_id>
     <sink_block_id>multirds_variable_setter_0_0</sink_block_id>
     <source_key>out</source_key>
     <sink_key>in</sink_key>
   </connection>
   <connection>
-    <source_block_id>multirds_max_freq_0</source_block_id>
+    <source_block_id>multirds_station_search_0</source_block_id>
     <sink_block_id>multirds_variable_setter_0_0_0</sink_block_id>
     <source_key>out</source_key>
     <sink_key>in</sink_key>
   </connection>
   <connection>
-    <source_block_id>multirds_max_freq_0</source_block_id>
+    <source_block_id>multirds_station_search_0</source_block_id>
     <sink_block_id>multirds_variable_setter_0_0_0_0</sink_block_id>
     <source_key>out</source_key>
     <sink_key>in</sink_key>
   </connection>
   <connection>
-    <source_block_id>multirds_max_freq_0</source_block_id>
+    <source_block_id>multirds_station_search_0</source_block_id>
     <sink_block_id>multirds_variable_setter_0_0_0_0_0</sink_block_id>
     <source_key>out</source_key>
     <sink_key>in</sink_key>
   </connection>
   <connection>
-    <source_block_id>multirds_max_freq_0</source_block_id>
+    <source_block_id>multirds_station_search_0</source_block_id>
     <sink_block_id>multirds_variable_setter_0_1</sink_block_id>
     <source_key>out</source_key>
     <sink_key>in</sink_key>
   </connection>
   <connection>
-    <source_block_id>multirds_max_freq_0</source_block_id>
+    <source_block_id>multirds_station_search_0</source_block_id>
     <sink_block_id>multirds_variable_setter_0_1_0</sink_block_id>
     <source_key>out</source_key>
     <sink_key>in</sink_key>
   </connection>
   <connection>
-    <source_block_id>multirds_max_freq_0</source_block_id>
+    <source_block_id>multirds_station_search_0</source_block_id>
     <sink_block_id>multirds_variable_setter_0_1_0_0</sink_block_id>
     <source_key>out</source_key>
     <sink_key>in</sink_key>
   </connection>
   <connection>
-    <source_block_id>multirds_max_freq_0</source_block_id>
+    <source_block_id>multirds_station_search_0</source_block_id>
     <sink_block_id>multirds_variable_setter_0_1_0_0_0</sink_block_id>
     <source_key>out</source_key>
     <sink_key>in</sink_key>
   </connection>
   <connection>
     <source_block_id>multirds_rds_parser_table_qt_0_0</source_block_id>
-    <sink_block_id>multirds_max_freq_0</sink_block_id>
+    <sink_block_id>multirds_station_search_0</sink_block_id>
     <source_key>ctrl</source_key>
     <sink_key>ctrl</sink_key>
   </connection>
diff --git a/apps/ifft-RDS-decoder_hier-block.grc b/apps/ifft-RDS-decoder_hier-block.grc
index e020b88..9238abb 100644
--- a/apps/ifft-RDS-decoder_hier-block.grc
+++ b/apps/ifft-RDS-decoder_hier-block.grc
@@ -588,7 +588,7 @@
     </param>
     <param>
       <key>file</key>
-      <value>"/tmp/cr/sync_decim_out_"+str(cutpoint)</value>
+      <value>"/tmp/cr/symbol_combiner_out_"+str(cutpoint)</value>
     </param>
     <param>
       <key>_coordinate</key>
@@ -2422,7 +2422,7 @@
     </param>
   </block>
   <block>
-    <key>multirds_sync_decim</key>
+    <key>multirds_symbol_combiner</key>
     <param>
       <key>alias</key>
       <value></value>
@@ -2449,7 +2449,7 @@
     </param>
     <param>
       <key>id</key>
-      <value>multirds_sync_decim_0</value>
+      <value>multirds_symbol_combiner_0</value>
     </param>
     <param>
       <key>log</key>
@@ -2473,7 +2473,7 @@
     </param>
   </block>
   <block>
-    <key>multirds_sync_decim</key>
+    <key>multirds_symbol_combiner</key>
     <param>
       <key>alias</key>
       <value></value>
@@ -2500,7 +2500,7 @@
     </param>
     <param>
       <key>id</key>
-      <value>multirds_sync_decim_0_0</value>
+      <value>multirds_symbol_combiner_0_0</value>
     </param>
     <param>
       <key>log</key>
@@ -2524,7 +2524,7 @@
     </param>
   </block>
   <block>
-    <key>multirds_sync_decim</key>
+    <key>multirds_symbol_combiner</key>
     <param>
       <key>alias</key>
       <value></value>
@@ -2551,7 +2551,7 @@
     </param>
     <param>
       <key>id</key>
-      <value>multirds_sync_decim_0_1</value>
+      <value>multirds_symbol_combiner_0_1</value>
     </param>
     <param>
       <key>log</key>
@@ -2575,7 +2575,7 @@
     </param>
   </block>
   <block>
-    <key>multirds_sync_decim</key>
+    <key>multirds_symbol_combiner</key>
     <param>
       <key>alias</key>
       <value></value>
@@ -2602,7 +2602,7 @@
     </param>
     <param>
       <key>id</key>
-      <value>multirds_sync_decim_0_1_0</value>
+      <value>multirds_symbol_combiner_0_1_0</value>
     </param>
     <param>
       <key>log</key>
@@ -3325,25 +3325,25 @@
   </connection>
   <connection>
     <source_block_id>blocks_complex_to_real_0</source_block_id>
-    <sink_block_id>multirds_sync_decim_0</sink_block_id>
+    <sink_block_id>multirds_symbol_combiner_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
     <source_block_id>blocks_complex_to_real_0_0</source_block_id>
-    <sink_block_id>multirds_sync_decim_0_0</sink_block_id>
+    <sink_block_id>multirds_symbol_combiner_0_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
     <source_block_id>blocks_complex_to_real_0_1</source_block_id>
-    <sink_block_id>multirds_sync_decim_0_1</sink_block_id>
+    <sink_block_id>multirds_symbol_combiner_0_1</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
     <source_block_id>blocks_complex_to_real_0_1_0</source_block_id>
-    <sink_block_id>multirds_sync_decim_0_1_0</sink_block_id>
+    <sink_block_id>multirds_symbol_combiner_0_1_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
@@ -3517,7 +3517,7 @@
   </connection>
   <connection>
     <source_block_id>multirds_rds_decoder_3</source_block_id>
-    <sink_block_id>multirds_sync_decim_0</sink_block_id>
+    <sink_block_id>multirds_symbol_combiner_0</sink_block_id>
     <source_key>out</source_key>
     <sink_key>ctrl</sink_key>
   </connection>
@@ -3529,25 +3529,25 @@
   </connection>
   <connection>
     <source_block_id>multirds_rds_decoder_3_0</source_block_id>
-    <sink_block_id>multirds_sync_decim_0_0</sink_block_id>
+    <sink_block_id>multirds_symbol_combiner_0_0</sink_block_id>
     <source_key>out</source_key>
     <sink_key>ctrl</sink_key>
   </connection>
   <connection>
     <source_block_id>multirds_rds_decoder_3_1</source_block_id>
-    <sink_block_id>multirds_sync_decim_0_1</sink_block_id>
+    <sink_block_id>multirds_symbol_combiner_0_1</sink_block_id>
     <source_key>out</source_key>
     <sink_key>ctrl</sink_key>
   </connection>
   <connection>
     <source_block_id>multirds_rds_decoder_3_1_0</source_block_id>
-    <sink_block_id>multirds_sync_decim_0_1_0</sink_block_id>
+    <sink_block_id>multirds_symbol_combiner_0_1_0</sink_block_id>
     <source_key>out</source_key>
     <sink_key>ctrl</sink_key>
   </connection>
   <connection>
     <source_block_id>multirds_rds_decoder_redsea_0</source_block_id>
-    <sink_block_id>multirds_sync_decim_0</sink_block_id>
+    <sink_block_id>multirds_symbol_combiner_0</sink_block_id>
     <source_key>out</source_key>
     <sink_key>ctrl</sink_key>
   </connection>
@@ -3558,37 +3558,37 @@
     <sink_key>in</sink_key>
   </connection>
   <connection>
-    <source_block_id>multirds_sync_decim_0</source_block_id>
+    <source_block_id>multirds_symbol_combiner_0</source_block_id>
     <sink_block_id>pad_sink_0_0</sink_block_id>
     <source_key>ctrl</source_key>
     <sink_key>in</sink_key>
   </connection>
   <connection>
-    <source_block_id>multirds_sync_decim_0</source_block_id>
+    <source_block_id>multirds_symbol_combiner_0</source_block_id>
     <sink_block_id>blocks_file_sink_0_0_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>multirds_sync_decim_0</source_block_id>
+    <source_block_id>multirds_symbol_combiner_0</source_block_id>
     <sink_block_id>digital_binary_slicer_fb_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>multirds_sync_decim_0_0</source_block_id>
+    <source_block_id>multirds_symbol_combiner_0_0</source_block_id>
     <sink_block_id>digital_binary_slicer_fb_0_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>multirds_sync_decim_0_1</source_block_id>
+    <source_block_id>multirds_symbol_combiner_0_1</source_block_id>
     <sink_block_id>digital_binary_slicer_fb_0_1</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>multirds_sync_decim_0_1_0</source_block_id>
+    <source_block_id>multirds_symbol_combiner_0_1_0</source_block_id>
     <sink_block_id>digital_binary_slicer_fb_0_1_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
diff --git a/apps/read_fmdec.grc b/apps/read_fmdec.grc
index 694b44c..8f627b8 100644
--- a/apps/read_fmdec.grc
+++ b/apps/read_fmdec.grc
@@ -1326,7 +1326,7 @@ class blk(gr.sync_block):  # other base classes are basic_block, decim_block, in
     </param>
   </block>
   <block>
-    <key>multirds_sync_decim</key>
+    <key>multirds_symbol_combiner</key>
     <param>
       <key>alias</key>
       <value></value>
@@ -1353,7 +1353,7 @@ class blk(gr.sync_block):  # other base classes are basic_block, decim_block, in
     </param>
     <param>
       <key>id</key>
-      <value>multirds_sync_decim_0</value>
+      <value>multirds_symbol_combiner_0</value>
     </param>
     <param>
       <key>log</key>
@@ -2574,7 +2574,7 @@ class blk(gr.sync_block):  # other base classes are basic_block, decim_block, in
   </connection>
   <connection>
     <source_block_id>blocks_complex_to_real_0</source_block_id>
-    <sink_block_id>multirds_sync_decim_0</sink_block_id>
+    <sink_block_id>multirds_symbol_combiner_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
@@ -2682,7 +2682,7 @@ class blk(gr.sync_block):  # other base classes are basic_block, decim_block, in
   </connection>
   <connection>
     <source_block_id>multirds_rds_decoder_redsea_0</source_block_id>
-    <sink_block_id>multirds_sync_decim_0</sink_block_id>
+    <sink_block_id>multirds_symbol_combiner_0</sink_block_id>
     <source_key>out</source_key>
     <sink_key>ctrl</sink_key>
   </connection>
@@ -2693,13 +2693,13 @@ class blk(gr.sync_block):  # other base classes are basic_block, decim_block, in
     <sink_key>in</sink_key>
   </connection>
   <connection>
-    <source_block_id>multirds_sync_decim_0</source_block_id>
+    <source_block_id>multirds_symbol_combiner_0</source_block_id>
     <sink_block_id>multirds_rds_parser_table_qt_0</sink_block_id>
     <source_key>ctrl</source_key>
     <sink_key>in</sink_key>
   </connection>
   <connection>
-    <source_block_id>multirds_sync_decim_0</source_block_id>
+    <source_block_id>multirds_symbol_combiner_0</source_block_id>
     <sink_block_id>digital_binary_slicer_fb_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
diff --git a/apps/read_sync_decim.grc b/apps/read_sync_decim.grc
index f86ffe6..9700c04 100644
--- a/apps/read_sync_decim.grc
+++ b/apps/read_sync_decim.grc
@@ -344,7 +344,7 @@
     </param>
     <param>
       <key>file</key>
-      <value>/tmp/cr/rds-rec_sync-decim_170324_weekend/sync_decim_out_25941</value>
+      <value>/tmp/cr/rds-rec_sync-decim_170324_weekend/symbol_combiner_out_25941</value>
     </param>
     <param>
       <key>_coordinate</key>