diff --git a/widgets/mainwindow.ui b/widgets/mainwindow.ui
index ef5a882b1..a3b9fe7cf 100644
--- a/widgets/mainwindow.ui
+++ b/widgets/mainwindow.ui
@@ -1013,7 +1013,7 @@ When not checked you can view the calibration results.</string>
                   <number>5</number>
                  </property>
                  <property name="maximum">
-                  <number>30</number>
+                  <number>1800</number>
                  </property>
                  <property name="value">
                   <number>30</number>
@@ -2120,10 +2120,10 @@ list. The list can be maintained in Settings (F2).</string>
                        <string>T/R  </string>
                       </property>
                       <property name="minimum">
-                       <number>120</number>
+                       <number>15</number>
                       </property>
                       <property name="maximum">
-                       <number>300</number>
+                       <number>1800</number>
                       </property>
                      </widget>
                     </item>