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diff --git a/gr-atsc/src/lib/atsci_fs_checker.h b/gr-atsc/src/lib/atsci_fs_checker.h
deleted file mode 100644
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--- a/gr-atsc/src/lib/atsci_fs_checker.h
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@@ -1,70 +0,0 @@
-/* -*- 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 _ATSC_FS_CHECKER_H_
-#define _ATSC_FS_CHECKER_H_
-
-#include <atsc_api.h>
-#include <atsci_syminfo.h>
-
-/*!
- * \brief abstract base class for ATSC field sync checker
- *
- * Processes input samples one at a time looking for
- * an occurence of either the field sync 1 or field sync 2 pattern.
- *
- * Note that unlike atsci_fs_correlator, this class uses the symbol_num in
- * input_tag to avoid having to test each symbol position.
- *
- * For each sample processed, an output sample and an output tag are produced.
- * The output samples are identical to the input samples but are delayed by
- * a number of samples given by \p delay().  The output tag associated with
- * the the given output sample indicates whether this sample is the beginning
- * of one of the field syncs or is an ordinary sample.  The tags are defined in
- * atsci_sync_tag.h.
- *
- * For ease of use, the field sync patterns are defined to begin with the
- * first symbol of the 4 symbol data segment sync pattern that immediately
- * proceeds the actual PN 511 code.  This makes it easier for downstream code
- * to determine the location of data segment syncs merely by counting.  They'll
- * occur every 832 samples assuming everything is working.
- */
-
-class ATSC_API atsci_fs_checker {
-
-public:
-
-  // CREATORS
-  atsci_fs_checker ();
-  virtual ~atsci_fs_checker () = 0;
-
-  // MANIPULATORS
-  virtual void reset () = 0;
-  virtual void filter (float input_sample, atsc::syminfo input_tag,
-		       float *output_sample, atsc::syminfo *output_tag) = 0;
-
-  // ACCESSORS
-
-  //! return delay in samples from input to output
-  virtual int delay () const = 0;
-};
-
-#endif /* _ATSC_FS_CHECKER_H_ */