diff --git a/grc/gsm_block_tree.xml b/grc/gsm_block_tree.xml
index dd971ab..89319c8 100644
--- a/grc/gsm_block_tree.xml
+++ b/grc/gsm_block_tree.xml
@@ -74,6 +74,7 @@
       <block>gsm_msg_to_tag.xml</block>
       <block>gsm_tmsi_dumper</block>
       <block>gsm_trx_burst_if</block>
+      <block>gsm_burst_to_fn_time</block>
     </cat>
   </cat>
 </cat>
diff --git a/grc/misc_utils/CMakeLists.txt b/grc/misc_utils/CMakeLists.txt
index 9407caf..3316373 100644
--- a/grc/misc_utils/CMakeLists.txt
+++ b/grc/misc_utils/CMakeLists.txt
@@ -33,5 +33,7 @@
     gsm_message_file_source.xml
     gsm_trx_burst_if.xml
     gsm_msg_to_tag.xml
-    gsm_controlled_fractional_resampler_cc.xml DESTINATION share/gnuradio/grc/blocks
+    gsm_controlled_fractional_resampler_cc.xml
+    gsm_burst_to_fn_time.xml
+    DESTINATION share/gnuradio/grc/blocks
 )
diff --git a/grc/misc_utils/gsm_burst_to_fn_time.xml b/grc/misc_utils/gsm_burst_to_fn_time.xml
new file mode 100644
index 0000000..dbbfe31
--- /dev/null
+++ b/grc/misc_utils/gsm_burst_to_fn_time.xml
@@ -0,0 +1,19 @@
+<?xml version="1.0"?>
+<block>
+  <name>Burst to fn_time</name>
+  <key>gsm_burst_to_fn_time</key>
+  <import>import grgsm</import>
+  <make>grgsm.burst_to_fn_time()</make>
+
+  <sink>
+    <name>bursts_in</name>
+    <type>message</type>
+    <optional>1</optional>
+  </sink>
+
+  <source>
+    <name>bursts_out</name>
+    <type>message</type>
+    <optional>1</optional>
+  </source>
+</block>
diff --git a/grc/transmitter/CMakeLists.txt b/grc/transmitter/CMakeLists.txt
index 0905e19..76d079e 100644
--- a/grc/transmitter/CMakeLists.txt
+++ b/grc/transmitter/CMakeLists.txt
@@ -21,5 +21,5 @@
     gsm_gmsk_mod.xml
     gsm_txtime_bursts_tagger.xml 
     gsm_txtime_setter.xml 
-    preprocess_tx_burst.xml DESTINATION share/gnuradio/grc/blocks
+    gsm_preprocess_tx_burst.xml DESTINATION share/gnuradio/grc/blocks
 )