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-rwxr-xr-xgr-radio-astronomy/src/python/usrp_ra_receiver.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/gr-radio-astronomy/src/python/usrp_ra_receiver.py b/gr-radio-astronomy/src/python/usrp_ra_receiver.py
index 137ed9eb7..c0edbe0e9 100755
--- a/gr-radio-astronomy/src/python/usrp_ra_receiver.py
+++ b/gr-radio-astronomy/src/python/usrp_ra_receiver.py
@@ -1044,7 +1044,7 @@ class app_flow_graph(stdgui2.std_top_block):
delfreq = -1
if self.use_notches == True:
for i in range(0,len(self.notches)):
- if abs(self.notches[i] - dfreq) < ((self.bw/self.NOTCH_TAPS)/2.0):
+ if self.notches[i] != 0 and abs(self.notches[i] - dfreq) < ((self.bw/self.NOTCH_TAPS)/2.0):
delfreq = i
break
j = 0