From 195d437f8efffc7b8e5e4fd241db4da052fa06a3 Mon Sep 17 00:00:00 2001
From: "Tobias Wellnitz, DH1TW" <tobias@dh1tw.de>
Date: Sun, 28 Jan 2018 01:35:58 +0100
Subject: [PATCH] replaced regex with simple manipulation

---
 pyhamtools/callinfo.py | 20 ++++++--------------
 1 file changed, 6 insertions(+), 14 deletions(-)

diff --git a/pyhamtools/callinfo.py b/pyhamtools/callinfo.py
index ba03b82..d115047 100644
--- a/pyhamtools/callinfo.py
+++ b/pyhamtools/callinfo.py
@@ -96,26 +96,18 @@ class Callinfo(object):
 
     @staticmethod
     def check_if_mm(callsign):
-        if re.search("/MM$", callsign.upper()):
-            return True
-        else:
-            return False
+        check = callsign[-3:].upper()
+        return "/MM" in check
 
     @staticmethod
     def check_if_am(callsign):
-        if re.search("/AM$", callsign.upper()):
-            return True
-        else:
-            return False
+        check = callsign[-3:].upper()
+        return "/AM" in check
 
     @staticmethod
     def check_if_beacon(callsign):
-        if re.search("/B$", callsign.upper()):
-            return True
-        elif re.search("/BCN$", callsign.upper()):
-            return True
-        else:
-            return False
+        check = callsign[-4:].upper()
+        return "/B" in check or "/BCN" in check
 
     def _dismantle_callsign(self, callsign, timestamp=timestamp_now):
         """ try to identify the callsign's identity by analyzing it in the following order: