diff --git a/libraries/dsp/filter/src/python/diff_lofar_coefs b/libraries/dsp/filter/src/python/diff_lofar_coefs
new file mode 100755
index 0000000000000000000000000000000000000000..620387d01c126e219f55d5634dea6c9d74bcc3a6
--- /dev/null
+++ b/libraries/dsp/filter/src/python/diff_lofar_coefs
@@ -0,0 +1,176 @@
+# Author: Eric Kooistra, 16 aug 2017
+# Purpose:
+#   Diff script to check that FIR coefficient mif files were indeed created from the LOFAR station subband FIR filter coefficient
+# Description:
+#   The coefs_wide4_p1024_t16_*.mif files used by Hajee used the litle endian wb_factor order in the old create_mifs.py, this can
+#   be repeated by setting pfir.wb_big_endian = False in fil_ppf_create_mifs.py.
+#
+#   The node_apertif_unb1_bn_filterbank.vhd in Hajee's image v16579 still used wpfb_unit instead of wpfb_unit_dev, because wpfb_unit_dev
+#   was first used in v16670. The wpfb_unit had little endian wideband index use for the data, and node_apertif_unb1_bn_filterbank.vhd
+#   assigned using to-range:
+#       fft_in_sosi_arr(I*g_wpfb.wb_factor to (I+1)*g_wpfb.wb_factor-1)
+#   In wpfb_unit_dev there is g_big_endian_wb_in and this is set to true in node_apertif_unb1_bn_filterbank.vhd such that it can
+#   assign with downto-range:
+#       fft_in_sosi_arr((U+1)*g_wpfb.wb_factor-1 downto U*g_wpfb.wb_factor)
+#
+#   Initially I (erko) had changed the internal order of the wideband FIR coefficients in wpfb_unit_dev to big endian, but that was
+#   not backwards compatible to the little endian order that was used in wpfb_unit by Hajee. Therefore I changed this in wpfb_unit_dev
+#   which required that I recreated all *4wb_*.mif files using the recreate_4wb_mifs shell script.
+#
+#   From apertif_unb1_bn_filterbank v17529 on all wideband *.mif files have the correct little endian order to match the
+#   little endian order of the wideband FIR coefficients in wpfb_unit, wpfb_unit_dev and in node_apertif_unb1_bn_filterbank.vhd.
+#
+# Usage:
+#   >./diff_lofar_coefs  # works but gives /bin/bash: _python errors
+#   >. diff_lofar_coefs  # works without these errors
+#
+#   Expected result is that this diff_lofar_coefs script does not report diff's, which proofs that the LOFAR FIR coefficients in the
+#   apertif_unb1_bn_filterbank are correctly set. This can be verified on hardware by applying a WG at the center of subband 301,
+#   because the subband statistics will then show some subbands as low as at 0 dB instead of a noise floor at about 50 dB. This is
+#   because for teh center of a subband the WG can generate a perfect sinus. If the FIR coefficients are in the wrong order, then
+#   the subband statistics will not peak low to 0 dB.
+
+# 1) Check that copies of LOFAR FIR coefficient reference files are equal
+diff $RADIOHDL/applications/apertif/matlab/data/Coeffs16384Kaiser-quant.dat $UPE/apps/commissioning_apertif_beamformer/coeffs16384Kaiser-quant.dat
+diff $RADIOHDL/applications/apertif/matlab/data/Coeffs16384Kaiser-quant.dat $UNB/Firmware/modules/Lofar/pfs/src/data/Coeffs16384Kaiser-quant.dat
+
+# 2) Check that the local stored LOFAR FIR coefficients mif files are the same as in apertif_unb1_bn_filterbank
+cd $RADIOHDL/libraries/dsp/filter/src/hex
+diff coefs_wide4_p1024_t16_0.mif  $RADIOHDL/applications/apertif/designs/apertif_unb1_bn_filterbank/src/hex/coefs_wide4_p1024_t16_0.mif
+diff coefs_wide4_p1024_t16_1.mif  $RADIOHDL/applications/apertif/designs/apertif_unb1_bn_filterbank/src/hex/coefs_wide4_p1024_t16_1.mif
+diff coefs_wide4_p1024_t16_2.mif  $RADIOHDL/applications/apertif/designs/apertif_unb1_bn_filterbank/src/hex/coefs_wide4_p1024_t16_2.mif
+diff coefs_wide4_p1024_t16_3.mif  $RADIOHDL/applications/apertif/designs/apertif_unb1_bn_filterbank/src/hex/coefs_wide4_p1024_t16_3.mif
+diff coefs_wide4_p1024_t16_4.mif  $RADIOHDL/applications/apertif/designs/apertif_unb1_bn_filterbank/src/hex/coefs_wide4_p1024_t16_4.mif
+diff coefs_wide4_p1024_t16_5.mif  $RADIOHDL/applications/apertif/designs/apertif_unb1_bn_filterbank/src/hex/coefs_wide4_p1024_t16_5.mif
+diff coefs_wide4_p1024_t16_6.mif  $RADIOHDL/applications/apertif/designs/apertif_unb1_bn_filterbank/src/hex/coefs_wide4_p1024_t16_6.mif
+diff coefs_wide4_p1024_t16_7.mif  $RADIOHDL/applications/apertif/designs/apertif_unb1_bn_filterbank/src/hex/coefs_wide4_p1024_t16_7.mif
+diff coefs_wide4_p1024_t16_8.mif  $RADIOHDL/applications/apertif/designs/apertif_unb1_bn_filterbank/src/hex/coefs_wide4_p1024_t16_8.mif
+diff coefs_wide4_p1024_t16_9.mif  $RADIOHDL/applications/apertif/designs/apertif_unb1_bn_filterbank/src/hex/coefs_wide4_p1024_t16_9.mif
+diff coefs_wide4_p1024_t16_10.mif $RADIOHDL/applications/apertif/designs/apertif_unb1_bn_filterbank/src/hex/coefs_wide4_p1024_t16_10.mif
+diff coefs_wide4_p1024_t16_11.mif $RADIOHDL/applications/apertif/designs/apertif_unb1_bn_filterbank/src/hex/coefs_wide4_p1024_t16_11.mif
+diff coefs_wide4_p1024_t16_12.mif $RADIOHDL/applications/apertif/designs/apertif_unb1_bn_filterbank/src/hex/coefs_wide4_p1024_t16_12.mif
+diff coefs_wide4_p1024_t16_13.mif $RADIOHDL/applications/apertif/designs/apertif_unb1_bn_filterbank/src/hex/coefs_wide4_p1024_t16_13.mif
+diff coefs_wide4_p1024_t16_14.mif $RADIOHDL/applications/apertif/designs/apertif_unb1_bn_filterbank/src/hex/coefs_wide4_p1024_t16_14.mif
+diff coefs_wide4_p1024_t16_15.mif $RADIOHDL/applications/apertif/designs/apertif_unb1_bn_filterbank/src/hex/coefs_wide4_p1024_t16_15.mif
+diff coefs_wide4_p1024_t16_16.mif $RADIOHDL/applications/apertif/designs/apertif_unb1_bn_filterbank/src/hex/coefs_wide4_p1024_t16_16.mif
+diff coefs_wide4_p1024_t16_17.mif $RADIOHDL/applications/apertif/designs/apertif_unb1_bn_filterbank/src/hex/coefs_wide4_p1024_t16_17.mif
+diff coefs_wide4_p1024_t16_18.mif $RADIOHDL/applications/apertif/designs/apertif_unb1_bn_filterbank/src/hex/coefs_wide4_p1024_t16_18.mif
+diff coefs_wide4_p1024_t16_19.mif $RADIOHDL/applications/apertif/designs/apertif_unb1_bn_filterbank/src/hex/coefs_wide4_p1024_t16_19.mif
+diff coefs_wide4_p1024_t16_20.mif $RADIOHDL/applications/apertif/designs/apertif_unb1_bn_filterbank/src/hex/coefs_wide4_p1024_t16_20.mif
+diff coefs_wide4_p1024_t16_21.mif $RADIOHDL/applications/apertif/designs/apertif_unb1_bn_filterbank/src/hex/coefs_wide4_p1024_t16_21.mif
+diff coefs_wide4_p1024_t16_22.mif $RADIOHDL/applications/apertif/designs/apertif_unb1_bn_filterbank/src/hex/coefs_wide4_p1024_t16_22.mif
+diff coefs_wide4_p1024_t16_23.mif $RADIOHDL/applications/apertif/designs/apertif_unb1_bn_filterbank/src/hex/coefs_wide4_p1024_t16_23.mif
+diff coefs_wide4_p1024_t16_24.mif $RADIOHDL/applications/apertif/designs/apertif_unb1_bn_filterbank/src/hex/coefs_wide4_p1024_t16_24.mif
+diff coefs_wide4_p1024_t16_25.mif $RADIOHDL/applications/apertif/designs/apertif_unb1_bn_filterbank/src/hex/coefs_wide4_p1024_t16_25.mif
+diff coefs_wide4_p1024_t16_26.mif $RADIOHDL/applications/apertif/designs/apertif_unb1_bn_filterbank/src/hex/coefs_wide4_p1024_t16_26.mif
+diff coefs_wide4_p1024_t16_27.mif $RADIOHDL/applications/apertif/designs/apertif_unb1_bn_filterbank/src/hex/coefs_wide4_p1024_t16_27.mif
+diff coefs_wide4_p1024_t16_28.mif $RADIOHDL/applications/apertif/designs/apertif_unb1_bn_filterbank/src/hex/coefs_wide4_p1024_t16_28.mif
+diff coefs_wide4_p1024_t16_29.mif $RADIOHDL/applications/apertif/designs/apertif_unb1_bn_filterbank/src/hex/coefs_wide4_p1024_t16_29.mif
+diff coefs_wide4_p1024_t16_30.mif $RADIOHDL/applications/apertif/designs/apertif_unb1_bn_filterbank/src/hex/coefs_wide4_p1024_t16_30.mif
+diff coefs_wide4_p1024_t16_31.mif $RADIOHDL/applications/apertif/designs/apertif_unb1_bn_filterbank/src/hex/coefs_wide4_p1024_t16_31.mif
+diff coefs_wide4_p1024_t16_32.mif $RADIOHDL/applications/apertif/designs/apertif_unb1_bn_filterbank/src/hex/coefs_wide4_p1024_t16_32.mif
+diff coefs_wide4_p1024_t16_33.mif $RADIOHDL/applications/apertif/designs/apertif_unb1_bn_filterbank/src/hex/coefs_wide4_p1024_t16_33.mif
+diff coefs_wide4_p1024_t16_34.mif $RADIOHDL/applications/apertif/designs/apertif_unb1_bn_filterbank/src/hex/coefs_wide4_p1024_t16_34.mif
+diff coefs_wide4_p1024_t16_35.mif $RADIOHDL/applications/apertif/designs/apertif_unb1_bn_filterbank/src/hex/coefs_wide4_p1024_t16_35.mif
+diff coefs_wide4_p1024_t16_36.mif $RADIOHDL/applications/apertif/designs/apertif_unb1_bn_filterbank/src/hex/coefs_wide4_p1024_t16_36.mif
+diff coefs_wide4_p1024_t16_37.mif $RADIOHDL/applications/apertif/designs/apertif_unb1_bn_filterbank/src/hex/coefs_wide4_p1024_t16_37.mif
+diff coefs_wide4_p1024_t16_38.mif $RADIOHDL/applications/apertif/designs/apertif_unb1_bn_filterbank/src/hex/coefs_wide4_p1024_t16_38.mif
+diff coefs_wide4_p1024_t16_39.mif $RADIOHDL/applications/apertif/designs/apertif_unb1_bn_filterbank/src/hex/coefs_wide4_p1024_t16_39.mif
+diff coefs_wide4_p1024_t16_40.mif $RADIOHDL/applications/apertif/designs/apertif_unb1_bn_filterbank/src/hex/coefs_wide4_p1024_t16_40.mif
+diff coefs_wide4_p1024_t16_41.mif $RADIOHDL/applications/apertif/designs/apertif_unb1_bn_filterbank/src/hex/coefs_wide4_p1024_t16_41.mif
+diff coefs_wide4_p1024_t16_42.mif $RADIOHDL/applications/apertif/designs/apertif_unb1_bn_filterbank/src/hex/coefs_wide4_p1024_t16_42.mif
+diff coefs_wide4_p1024_t16_43.mif $RADIOHDL/applications/apertif/designs/apertif_unb1_bn_filterbank/src/hex/coefs_wide4_p1024_t16_43.mif
+diff coefs_wide4_p1024_t16_44.mif $RADIOHDL/applications/apertif/designs/apertif_unb1_bn_filterbank/src/hex/coefs_wide4_p1024_t16_44.mif
+diff coefs_wide4_p1024_t16_45.mif $RADIOHDL/applications/apertif/designs/apertif_unb1_bn_filterbank/src/hex/coefs_wide4_p1024_t16_45.mif
+diff coefs_wide4_p1024_t16_46.mif $RADIOHDL/applications/apertif/designs/apertif_unb1_bn_filterbank/src/hex/coefs_wide4_p1024_t16_46.mif
+diff coefs_wide4_p1024_t16_47.mif $RADIOHDL/applications/apertif/designs/apertif_unb1_bn_filterbank/src/hex/coefs_wide4_p1024_t16_47.mif
+diff coefs_wide4_p1024_t16_48.mif $RADIOHDL/applications/apertif/designs/apertif_unb1_bn_filterbank/src/hex/coefs_wide4_p1024_t16_48.mif
+diff coefs_wide4_p1024_t16_49.mif $RADIOHDL/applications/apertif/designs/apertif_unb1_bn_filterbank/src/hex/coefs_wide4_p1024_t16_49.mif
+diff coefs_wide4_p1024_t16_50.mif $RADIOHDL/applications/apertif/designs/apertif_unb1_bn_filterbank/src/hex/coefs_wide4_p1024_t16_50.mif
+diff coefs_wide4_p1024_t16_51.mif $RADIOHDL/applications/apertif/designs/apertif_unb1_bn_filterbank/src/hex/coefs_wide4_p1024_t16_51.mif
+diff coefs_wide4_p1024_t16_52.mif $RADIOHDL/applications/apertif/designs/apertif_unb1_bn_filterbank/src/hex/coefs_wide4_p1024_t16_52.mif
+diff coefs_wide4_p1024_t16_53.mif $RADIOHDL/applications/apertif/designs/apertif_unb1_bn_filterbank/src/hex/coefs_wide4_p1024_t16_53.mif
+diff coefs_wide4_p1024_t16_54.mif $RADIOHDL/applications/apertif/designs/apertif_unb1_bn_filterbank/src/hex/coefs_wide4_p1024_t16_54.mif
+diff coefs_wide4_p1024_t16_55.mif $RADIOHDL/applications/apertif/designs/apertif_unb1_bn_filterbank/src/hex/coefs_wide4_p1024_t16_55.mif
+diff coefs_wide4_p1024_t16_56.mif $RADIOHDL/applications/apertif/designs/apertif_unb1_bn_filterbank/src/hex/coefs_wide4_p1024_t16_56.mif
+diff coefs_wide4_p1024_t16_57.mif $RADIOHDL/applications/apertif/designs/apertif_unb1_bn_filterbank/src/hex/coefs_wide4_p1024_t16_57.mif
+diff coefs_wide4_p1024_t16_58.mif $RADIOHDL/applications/apertif/designs/apertif_unb1_bn_filterbank/src/hex/coefs_wide4_p1024_t16_58.mif
+diff coefs_wide4_p1024_t16_59.mif $RADIOHDL/applications/apertif/designs/apertif_unb1_bn_filterbank/src/hex/coefs_wide4_p1024_t16_59.mif
+diff coefs_wide4_p1024_t16_60.mif $RADIOHDL/applications/apertif/designs/apertif_unb1_bn_filterbank/src/hex/coefs_wide4_p1024_t16_60.mif
+diff coefs_wide4_p1024_t16_61.mif $RADIOHDL/applications/apertif/designs/apertif_unb1_bn_filterbank/src/hex/coefs_wide4_p1024_t16_61.mif
+diff coefs_wide4_p1024_t16_62.mif $RADIOHDL/applications/apertif/designs/apertif_unb1_bn_filterbank/src/hex/coefs_wide4_p1024_t16_62.mif
+diff coefs_wide4_p1024_t16_63.mif $RADIOHDL/applications/apertif/designs/apertif_unb1_bn_filterbank/src/hex/coefs_wide4_p1024_t16_63.mif
+
+# 3) Create reference LOFAR FIR coefficients mif files:
+cd $RADIOHDL/libraries/dsp/filter/src/python
+python fil_ppf_create_mifs.py -f $RADIOHDL/applications/apertif/matlab/data/Coeffs16384Kaiser-quant.dat -t 16 -p 1024 -w 4 -c 16
+
+# 4) Verify that the created reference LOFAR FIR coefficients mif files are equal to the local stored mif files
+cd $RADIOHDL/libraries/dsp/filter/src/hex
+diff Coeffs16384Kaiser-quant_4wb_0.mif  coefs_wide4_p1024_t16_0.mif
+diff Coeffs16384Kaiser-quant_4wb_1.mif  coefs_wide4_p1024_t16_1.mif
+diff Coeffs16384Kaiser-quant_4wb_2.mif  coefs_wide4_p1024_t16_2.mif
+diff Coeffs16384Kaiser-quant_4wb_3.mif  coefs_wide4_p1024_t16_3.mif
+diff Coeffs16384Kaiser-quant_4wb_4.mif  coefs_wide4_p1024_t16_4.mif
+diff Coeffs16384Kaiser-quant_4wb_5.mif  coefs_wide4_p1024_t16_5.mif
+diff Coeffs16384Kaiser-quant_4wb_6.mif  coefs_wide4_p1024_t16_6.mif
+diff Coeffs16384Kaiser-quant_4wb_7.mif  coefs_wide4_p1024_t16_7.mif
+diff Coeffs16384Kaiser-quant_4wb_8.mif  coefs_wide4_p1024_t16_8.mif
+diff Coeffs16384Kaiser-quant_4wb_9.mif  coefs_wide4_p1024_t16_9.mif
+diff Coeffs16384Kaiser-quant_4wb_10.mif coefs_wide4_p1024_t16_10.mif
+diff Coeffs16384Kaiser-quant_4wb_11.mif coefs_wide4_p1024_t16_11.mif
+diff Coeffs16384Kaiser-quant_4wb_12.mif coefs_wide4_p1024_t16_12.mif
+diff Coeffs16384Kaiser-quant_4wb_13.mif coefs_wide4_p1024_t16_13.mif
+diff Coeffs16384Kaiser-quant_4wb_14.mif coefs_wide4_p1024_t16_14.mif
+diff Coeffs16384Kaiser-quant_4wb_15.mif coefs_wide4_p1024_t16_15.mif
+diff Coeffs16384Kaiser-quant_4wb_16.mif coefs_wide4_p1024_t16_16.mif
+diff Coeffs16384Kaiser-quant_4wb_17.mif coefs_wide4_p1024_t16_17.mif
+diff Coeffs16384Kaiser-quant_4wb_18.mif coefs_wide4_p1024_t16_18.mif
+diff Coeffs16384Kaiser-quant_4wb_19.mif coefs_wide4_p1024_t16_19.mif
+diff Coeffs16384Kaiser-quant_4wb_20.mif coefs_wide4_p1024_t16_20.mif
+diff Coeffs16384Kaiser-quant_4wb_21.mif coefs_wide4_p1024_t16_21.mif
+diff Coeffs16384Kaiser-quant_4wb_22.mif coefs_wide4_p1024_t16_22.mif
+diff Coeffs16384Kaiser-quant_4wb_23.mif coefs_wide4_p1024_t16_23.mif
+diff Coeffs16384Kaiser-quant_4wb_24.mif coefs_wide4_p1024_t16_24.mif
+diff Coeffs16384Kaiser-quant_4wb_25.mif coefs_wide4_p1024_t16_25.mif
+diff Coeffs16384Kaiser-quant_4wb_26.mif coefs_wide4_p1024_t16_26.mif
+diff Coeffs16384Kaiser-quant_4wb_27.mif coefs_wide4_p1024_t16_27.mif
+diff Coeffs16384Kaiser-quant_4wb_28.mif coefs_wide4_p1024_t16_28.mif
+diff Coeffs16384Kaiser-quant_4wb_29.mif coefs_wide4_p1024_t16_29.mif
+diff Coeffs16384Kaiser-quant_4wb_30.mif coefs_wide4_p1024_t16_30.mif
+diff Coeffs16384Kaiser-quant_4wb_31.mif coefs_wide4_p1024_t16_31.mif
+diff Coeffs16384Kaiser-quant_4wb_32.mif coefs_wide4_p1024_t16_32.mif
+diff Coeffs16384Kaiser-quant_4wb_33.mif coefs_wide4_p1024_t16_33.mif
+diff Coeffs16384Kaiser-quant_4wb_34.mif coefs_wide4_p1024_t16_34.mif
+diff Coeffs16384Kaiser-quant_4wb_35.mif coefs_wide4_p1024_t16_35.mif
+diff Coeffs16384Kaiser-quant_4wb_36.mif coefs_wide4_p1024_t16_36.mif
+diff Coeffs16384Kaiser-quant_4wb_37.mif coefs_wide4_p1024_t16_37.mif
+diff Coeffs16384Kaiser-quant_4wb_38.mif coefs_wide4_p1024_t16_38.mif
+diff Coeffs16384Kaiser-quant_4wb_39.mif coefs_wide4_p1024_t16_39.mif
+diff Coeffs16384Kaiser-quant_4wb_40.mif coefs_wide4_p1024_t16_40.mif
+diff Coeffs16384Kaiser-quant_4wb_41.mif coefs_wide4_p1024_t16_41.mif
+diff Coeffs16384Kaiser-quant_4wb_42.mif coefs_wide4_p1024_t16_42.mif
+diff Coeffs16384Kaiser-quant_4wb_43.mif coefs_wide4_p1024_t16_43.mif
+diff Coeffs16384Kaiser-quant_4wb_44.mif coefs_wide4_p1024_t16_44.mif
+diff Coeffs16384Kaiser-quant_4wb_45.mif coefs_wide4_p1024_t16_45.mif
+diff Coeffs16384Kaiser-quant_4wb_46.mif coefs_wide4_p1024_t16_46.mif
+diff Coeffs16384Kaiser-quant_4wb_47.mif coefs_wide4_p1024_t16_47.mif
+diff Coeffs16384Kaiser-quant_4wb_48.mif coefs_wide4_p1024_t16_48.mif
+diff Coeffs16384Kaiser-quant_4wb_49.mif coefs_wide4_p1024_t16_49.mif
+diff Coeffs16384Kaiser-quant_4wb_50.mif coefs_wide4_p1024_t16_50.mif
+diff Coeffs16384Kaiser-quant_4wb_51.mif coefs_wide4_p1024_t16_51.mif
+diff Coeffs16384Kaiser-quant_4wb_52.mif coefs_wide4_p1024_t16_52.mif
+diff Coeffs16384Kaiser-quant_4wb_53.mif coefs_wide4_p1024_t16_53.mif
+diff Coeffs16384Kaiser-quant_4wb_54.mif coefs_wide4_p1024_t16_54.mif
+diff Coeffs16384Kaiser-quant_4wb_55.mif coefs_wide4_p1024_t16_55.mif
+diff Coeffs16384Kaiser-quant_4wb_56.mif coefs_wide4_p1024_t16_56.mif
+diff Coeffs16384Kaiser-quant_4wb_57.mif coefs_wide4_p1024_t16_57.mif
+diff Coeffs16384Kaiser-quant_4wb_58.mif coefs_wide4_p1024_t16_58.mif
+diff Coeffs16384Kaiser-quant_4wb_59.mif coefs_wide4_p1024_t16_59.mif
+diff Coeffs16384Kaiser-quant_4wb_60.mif coefs_wide4_p1024_t16_60.mif
+diff Coeffs16384Kaiser-quant_4wb_61.mif coefs_wide4_p1024_t16_61.mif
+diff Coeffs16384Kaiser-quant_4wb_62.mif coefs_wide4_p1024_t16_62.mif
+diff Coeffs16384Kaiser-quant_4wb_63.mif coefs_wide4_p1024_t16_63.mif
+
+# 5) Set script exit directory
+cd $RADIOHDL/libraries/dsp/filter/src/python