diff --git a/uwb/configuration.conf b/uwb/configuration.conf
index 1320904..68d3cab 100644
--- a/uwb/configuration.conf
+++ b/uwb/configuration.conf
@@ -130,3 +130,6 @@ ref_frame7.payload_size=0x0C68
 # Post tones
 post_tx.pattern_data=DD:DD:DD:DD:77:77:77:77
 post_tx.pattern_repetitions=0x0002
+
+# Ipatov / STS time difference threshold
+ip_sts_sanity_thres_q2=0x0A