diff --git a/applications/apertif/apertif_unb1_correlator/src/vhdl/apertif_unb1_correlator.vhd b/applications/apertif/apertif_unb1_correlator/src/vhdl/apertif_unb1_correlator.vhd
index 2ebe1093e658804c0d0e9dd51cd06abec785d806..243df319ff13c7d751d1a807973da7f8a12691bb 100644
--- a/applications/apertif/apertif_unb1_correlator/src/vhdl/apertif_unb1_correlator.vhd
+++ b/applications/apertif/apertif_unb1_correlator/src/vhdl/apertif_unb1_correlator.vhd
@@ -143,7 +143,7 @@ ARCHITECTURE str OF apertif_unb1_correlator IS
   CONSTANT c_wpfb_in_dat_w          : NATURAL := 8; --6;                    -- = 8, number of input bits                           
   CONSTANT c_wpfb_out_dat_w         : NATURAL := 14; --12;                   -- = 14, number of output bits: in_dat_w + natural((cei
   CONSTANT c_wpfb_use_separate      : BOOLEAN := FALSE;                -- = false for complex input, true for two real inputs
-  CONSTANT c_wpfb_use_reorder       : BOOLEAN := TRUE;
+  CONSTANT c_wpfb_use_reorder       : BOOLEAN := FALSE;
 
   CONSTANT c_wpfb : t_wpfb  := (c_wpfb_wb_factor, c_wpfb_nof_points, c_wpfb_nof_chan, c_wpfb_nof_wb_streams,
                                 c_wpfb_nof_taps, c_wpfb_in_dat_w, 16, 16,
diff --git a/applications/apertif/apertif_unb1_correlator/tb/python/tc_apertif_unb1_correlator.py b/applications/apertif/apertif_unb1_correlator/tb/python/tc_apertif_unb1_correlator.py
index db4dd367116f69e9fa7b28b47a4d4d5a085eac14..a649b4cd91052317d76570569e43aa827a05c0af 100644
--- a/applications/apertif/apertif_unb1_correlator/tb/python/tc_apertif_unb1_correlator.py
+++ b/applications/apertif/apertif_unb1_correlator/tb/python/tc_apertif_unb1_correlator.py
@@ -4,7 +4,7 @@ from common_dsp import *
 from file_io import *
 
 REC_FILE = os.environ['RADIOHDL']+'/applications/apertif/apertif_unb1_correlator/tb/rec/correlator_src_out_arr0.rec'
-USE_NEW_REC_FILE = False
+USE_NEW_REC_FILE = True 
 
 NOF_INPUTS = 12
 NOF_CHANNELS = 64
@@ -35,6 +35,6 @@ correlator_src_out_arr = rec_file_to_complex(REC_FILE, complex_width=CORRELATOR_
 # Plot the phase shifts
 for i in range(1000):
     print i
-    plot_phase_shifts(correlator_src_out_arr[i*64], NOF_VISIBILITIES)
+    plot_phase_shifts(correlator_src_out_arr[i], NOF_VISIBILITIES)
 
 
diff --git a/applications/apertif/apertif_unb1_correlator/tb/python/tc_wpfb_src_out_arr.py b/applications/apertif/apertif_unb1_correlator/tb/python/tc_wpfb_src_out_arr.py
index 2dddaec91bf1c752368a785087e94d7eca7f7b91..874c372e0938a2a511424beb576ccaa036480189 100644
--- a/applications/apertif/apertif_unb1_correlator/tb/python/tc_wpfb_src_out_arr.py
+++ b/applications/apertif/apertif_unb1_correlator/tb/python/tc_wpfb_src_out_arr.py
@@ -10,6 +10,7 @@ from scipy.fftpack import fft,ifft, fftfreq, fftshift
 
 REC_FILE = os.environ['RADIOHDL']+'/applications/apertif/apertif_unb1_correlator/tb/rec/wpfb_src_out_arr0.rec'
 WPFB_OUT_DATA_WIDTH = 14
+NOF_CHANNELS = 64
 
 ################################################################################
 # Read the lines from the file and turn them into a list
@@ -19,18 +20,14 @@ complex_list = rec_file_to_complex(REC_FILE, complex_width=WPFB_OUT_DATA_WIDTH)
 ################################################################################
 ## Plot FFT
 ################################################################################
-f = deinterleave(complex_list[0], 2, 1)[0]
+f = deinterleave(complex_list[5], 2, 1)[0]
 
-N=64
-T = 1.0 / N
+T = 1.0 / NOF_CHANNELS
 yf = f
-
-xf = fftfreq(N, T)
+xf = range(NOF_CHANNELS)
 xf = fftshift(xf)
 yplot = fftshift(yf)
-
-plt.bar(xf, 1.0/N * np.abs(yplot))
-
+plt.bar(xf, 1.0/NOF_CHANNELS * np.abs(yplot))
 plt.grid()
 plt.show()