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diff --git a/gr-atsc/src/lib/GrAtscFieldSyncCorrelator.h b/gr-atsc/src/lib/GrAtscFieldSyncCorrelator.h
new file mode 100644
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+++ b/gr-atsc/src/lib/GrAtscFieldSyncCorrelator.h
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+/* -*- c++ -*- */
+/*
+ * Copyright 2002 Free Software Foundation, Inc.
+ * 
+ * This file is part of GNU Radio
+ * 
+ * GNU Radio is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3, or (at your option)
+ * any later version.
+ * 
+ * GNU Radio is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with GNU Radio; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifndef _GRATSCFIELDSYNCCORRELATOR_H_
+#define _GRATSCFIELDSYNCCORRELATOR_H_
+
+#include <VrHistoryProc.h>
+
+class atsci_fs_correlator;
+
+/*!
+ * \brief ATSC field sync correlator (float --> float,float)
+ *
+ * first output is delayed version of input.
+ * second output is set of tags, one-for-one with first output.
+ *
+ * tag values are defined in atsci_sync_tag.h
+ */
+
+class GrAtscFieldSyncCorrelator : public VrHistoryProc<float,float>
+{
+
+public:
+
+  GrAtscFieldSyncCorrelator ();
+  ~GrAtscFieldSyncCorrelator ();
+
+  const char *name () { return "GrAtscFieldSyncCorrelator"; }
+
+  int work (VrSampleRange output, void *o[],
+	    VrSampleRange inputs[], void *i[]);
+
+protected:
+  atsci_fs_correlator	*d_fsc;
+};
+
+#endif /* _GRATSCFIELDSYNCCORRELATOR_H_ */