diff --git a/Source/IO/JSONWriter/KTJSONTypeWriterTime.cc b/Source/IO/JSONWriter/KTJSONTypeWriterTime.cc
index f95786a6f..2e3b47232 100644
--- a/Source/IO/JSONWriter/KTJSONTypeWriterTime.cc
+++ b/Source/IO/JSONWriter/KTJSONTypeWriterTime.cc
@@ -5,10 +5,15 @@
  *      Author: nsoblath
  */
 
+#include "KTArbitraryMetadata.hh"
 #include "KTEggHeader.hh"
 #include "KTJSONTypeWriterTime.hh"
 #include "KTTIFactory.hh"
+
 //#include "KTLogger.hh"
+#include "param.hh"
+#include "param_json.hh"
+
 
 using std::string;
 
@@ -32,6 +37,26 @@ namespace Katydid
     void KTJSONTypeWriterTime::RegisterSlots()
     {
         fWriter->RegisterSlot("header", this, &KTJSONTypeWriterTime::WriteEggHeader);
+        fWriter->RegisterSlot("metadata", this, &KTJSONTypeWriterTime::WriteArbitraryMetadata);
+        return;
+    }
+
+
+    void KTJSONTypeWriterTime::WriteArbitraryMetadata(Nymph::KTDataPtr data)
+    {
+
+        using rapidjson::SizeType;
+
+        if (! fWriter->OpenAndVerifyFile()) return;
+
+        if (! data) return;
+
+        scarab::param* metadata = data->Of< KTArbitraryMetadata >().GetMetadata();
+
+        scarab::param_output_json tOutput;
+
+        bool t_did_write_file = tOutput.write_file( *metadata, fWriter->GetFilename() );
+
         return;
     }
 
diff --git a/Source/IO/JSONWriter/KTJSONTypeWriterTime.hh b/Source/IO/JSONWriter/KTJSONTypeWriterTime.hh
index 6c0252a2a..fd5cb640f 100644
--- a/Source/IO/JSONWriter/KTJSONTypeWriterTime.hh
+++ b/Source/IO/JSONWriter/KTJSONTypeWriterTime.hh
@@ -27,6 +27,8 @@ namespace Katydid
 
         public:
             void WriteEggHeader(Nymph::KTDataPtr headerPtr);
+            void WriteArbitraryMetadata(Nymph::KTDataPtr data);
+
     };
 
 } /* namespace Katydid */
diff --git a/Source/Time/KTEggProcessor.cc b/Source/Time/KTEggProcessor.cc
index 63a3d2ec0..fe9cc9586 100644
--- a/Source/Time/KTEggProcessor.cc
+++ b/Source/Time/KTEggProcessor.cc
@@ -39,6 +39,7 @@ namespace Katydid
             fFilenames(),
             fEggReaderType("none"),
             fRequireMetadata(false),
+            fHaveMetadata(false),
             fSliceSize(1024),
             fStride(1024),
             fStartTime(0.),
@@ -47,6 +48,7 @@ namespace Katydid
             fNormalizeVoltages(true),
             fHeaderSignal("header", this),
             fRawDataSignal("raw-ts", this),
+            fMetadataSignal("metadata", this),
             fDataSignal("ts", this),
             fEggDoneSignal("egg-done", this),
             fSummarySignal("summary", this)
@@ -159,6 +161,7 @@ namespace Katydid
                 KTERROR(egglog, "Can only specify metadata file if there's already a single egg file specified" );
                 return false;
             }
+            fHaveMetadata = true;
             KTDEBUG(egglog, "Specifying single metadata file to egg processor from the CL");
             fFilenames.back().second = scarab::expand_path(fCLHandler->GetCommandLineValue< string >("metadata-file"));
             KTINFO(egglog, "Added metadata file to egg processor: <" << fFilenames.back().second << ">");
@@ -205,6 +208,11 @@ namespace Katydid
         }
 
         fHeaderSignal(headerPtr);
+        if ( fHaveMetadata )
+        {
+            fMetadataSignal(headerPtr);
+        }
+
         KTINFO(egglog, "The egg file has been opened successfully and the header was parsed and processed;");
         KTPROG(egglog, "Proceeding with slice processing");
 
diff --git a/Source/Time/KTEggProcessor.hh b/Source/Time/KTEggProcessor.hh
index 2af98b7a0..a316a8596 100644
--- a/Source/Time/KTEggProcessor.hh
+++ b/Source/Time/KTEggProcessor.hh
@@ -74,6 +74,7 @@ namespace Katydid
         produced; guarantees KTRawTimeSeriesData
      - "ts": void (Nymph::KTDataPtr) -- emitted when the new calibrated time series is
         produced; Guarantees KTTimeSeriesData
+     - "metadata": void (Nymph::KTDataPtr) -- emitted when the file header is parsed.
      - "egg-done": void () --  emitted when a file is finished.
      - "summary": void (const KTProcSummary*) -- emitted when a file is 
         finished (after "egg-done")
@@ -99,6 +100,8 @@ namespace Katydid
             MEMBERVARIABLEREF(KTEggReader::path_vec, Filenames);
             MEMBERVARIABLEREF(std::string, EggReaderType);
             MEMBERVARIABLE(bool, RequireMetadata);
+            MEMBERVARIABLE(bool, HaveMetadata);
+
 
             MEMBERVARIABLE(unsigned, SliceSize);
             MEMBERVARIABLE(unsigned, Stride);
@@ -131,6 +134,7 @@ namespace Katydid
             Nymph::KTSignalData fHeaderSignal;
             Nymph::KTSignalData fRawDataSignal;
             Nymph::KTSignalData fDataSignal;
+            Nymph::KTSignalData fMetadataSignal;
             Nymph::KTSignalOneArg< void > fEggDoneSignal;
             Nymph::KTSignalOneArg< const KTProcSummary* > fSummarySignal;