diff --git a/scanner.py b/scanner.py
index 1ae1ded..3044700 100644
--- a/scanner.py
+++ b/scanner.py
@@ -16,6 +16,7 @@ data_rows = []   # global 2-D list
 state = {}
 blacklist = []
 Inoise_baseline = 0.1
+n_clip_events = 0
 
 PATTERN = re.compile(
     r"Va=(?P<Va>[\d.-]+)\s+Vp=(?P<Vp>[\d.-]+)\s*\|\s*"
@@ -221,6 +222,7 @@ class TelnetReader:
     def process_line(self, line):
         global state
         global Inoise_baseline
+        global n_clip_events
         print(line)
         if not line.startswith("Va="):                      # skip lines that are not to be analyzed
             return
@@ -242,7 +244,7 @@ class TelnetReader:
             extract_to_dataframe(line)  # capture the measurement
             if state["freq"]>3.0:
                 Inoise_baseline = 0.8*Inoise_baseline + 0.2*data_rows[-1][12]    # remember last baseline around 3Hz (assuming top-down scanning)
-            if data_rows and (data_rows[-1][11]>state["allowed_noise_level"] or data_rows[-1][12]>state["allowed_noise_level"] or (state["freq"]<3.0 and data_rows[-1][12]>1.25*Inoise_baseline)):
+            if data_rows and (state["freq"]>10) and (data_rows[-1][11]>state["allowed_noise_level"] or data_rows[-1][12]>state["allowed_noise_level"]):  # or (state["freq"]<3.0 and data_rows[-1][12]>1.25*Inoise_baseline)):
                 # Too much noise: add to blacklist
                 print("Too much noise - adding to blacklist")
                 blacklist.append({"Freq": state["freq"], "NrToSkip": state["skip_scans_for_noisy_freqs"]})
@@ -250,7 +252,11 @@ class TelnetReader:
                 del data_rows[-1]       # remove this last entry from the list (for DB it is okay, but for CSV things will shift)
             else:
                 if data_rows and (data_rows[-1][7]<5 or data_rows[-1][8]>250 or data_rows[-1][9]<5 or data_rows[-1][10]>250):   # XXXDB
-                    state["freq"] = 0       # force ending of the scan, and write no data in the database
+                    if (++n_clip_events > 2):       # react only after multiple clip events (solves startup issue)
+                        if data_rows[-1][9]>0:      # make exception (for our broken hardware?)
+                            state["freq"] = 0       # force ending of the scan, and write no data in the database
+                else:
+                    n_clip_events=0
             # calculate next freq
             if state["freq"] > 1.0:
                 freq_multiplier = state["freq_step_multiply"]     # calc next freq