diff --git a/boswatch/filter/doubeFilter.py b/boswatch/filter/doubeFilter.py
new file mode 100644
index 0000000..a5d8ccb
--- /dev/null
+++ b/boswatch/filter/doubeFilter.py
@@ -0,0 +1,54 @@
+#!/usr/bin/python
+# -*- coding: utf-8 -*-
+"""!
+    ____  ____  ______       __      __       __       _____
+   / __ )/ __ \/ ___/ |     / /___ _/ /______/ /_     |__  /
+  / __  / / / /\__ \| | /| / / __ `/ __/ ___/ __ \     /_ <
+ / /_/ / /_/ /___/ /| |/ |/ / /_/ / /_/ /__/ / / /   ___/ /
+/_____/\____//____/ |__/|__/\__,_/\__/\___/_/ /_/   /____/
+                German BOS Information Script
+                     by Bastian Schroll
+
+@file:        doubleFilter.py
+@date:        15.01.2018
+@author:      Bastian Schroll
+@description: Class to implement a filter for double alarms
+@todo test, refactor and document
+@todo check_msg is not implemented yet
+"""
+import logging
+import time
+
+from boswatch.config import Config
+
+logging.debug("- %s loaded", __name__)
+
+
+class DoubleFilter:
+    """!Double Filter Class"""
+
+    def __init__(self, scanWord):
+        """!init"""
+        self._config = Config()
+        self._filterList = []
+        self._scanWord = scanWord
+
+    def check(self, bwPacket):
+        for listPacket in self._filterList:
+            if listPacket.get("timestamp") < (time.time() - self._config.getInt("doubleFilter", "IgnoreTime", "serverConfig")):
+                self._filterList.remove(listPacket)
+                logging.debug("entry to old remove")
+                continue
+
+            if listPacket.get(self._scanWord) is bwPacket.get(self._scanWord):
+                self._filterList.remove(listPacket)
+                logging.debug("found a same and remove the old one")
+
+        self._filterList.insert(0, bwPacket)
+        self._deleteTooMuch()
+        logging.debug(self._filterList)
+
+    def _deleteTooMuch(self):
+        if len(self._filterList) > self._config.getInt("doubleFilter", "MaxEntry", "serverConfig"):
+            logging.debug("list full, delete one")
+            self._filterList.pop()
diff --git a/boswatch/utils/wildcard.py b/boswatch/utils/wildcard.py
index 478a517..b58b861 100644
--- a/boswatch/utils/wildcard.py
+++ b/boswatch/utils/wildcard.py
@@ -13,6 +13,7 @@
 @date:        15.01.2018
 @author:      Bastian Schroll
 @description: Little Helper to replace wildcards in stings
+@todo not completed yet
 """
 import logging
 
diff --git a/config/server.ini b/config/server.ini
index ecb691e..9d4bce3 100644
--- a/config/server.ini
+++ b/config/server.ini
@@ -35,11 +35,11 @@ RegEx    =
 UseDoubleFilter = 0
 UseRegexFilter  = 0
 
-[doubleFilter],
+[doubleFilter]
 # max number of entrys to save for comparison
 MaxEntry   = 30
 # time to ignore same alarm in seconds
-IgnoreTime = 30
+IgnoreTime = 10
 # include pocsag msg in comparison
 CheckMsg   = 0