diff --git a/src/dataformatpanel.ui b/src/dataformatpanel.ui
--- a/src/dataformatpanel.ui
+++ b/src/dataformatpanel.ui
@@ -25,18 +25,24 @@
         <string>Simple Binary</string>
        </property>
        <property name="checked">
-        <bool>true</bool>
+        <bool>false</bool>
        </property>
       </widget>
      </item>
      <item>
       <widget class="QRadioButton" name="rbAscii">
+       <property name="enabled">
+        <bool>true</bool>
+       </property>
        <property name="toolTip">
         <string>Data is sent in the form of ASCII text as comma seperated values. Easy to implement.</string>
        </property>
        <property name="text">
         <string>ASCII</string>
        </property>
+       <property name="checked">
+        <bool>true</bool>
+       </property>
       </widget>
      </item>
      <item>