diff --git a/tests/test_ui.py b/tests/test_ui.py
index 8639b80..512fe80 100644
--- a/tests/test_ui.py
+++ b/tests/test_ui.py
@@ -30,47 +30,67 @@ def test_ui():
     builder.add_from_file("spacelab_transmitter/data/ui/spacelab_transmitter.glade")
 
     # Main window
-    window                  = builder.get_object("window_main")
-    button_preferences      = builder.get_object("button_preferences")
-    toolbutton_about        = builder.get_object("toolbutton_about")
-    liststore_satellite     = builder.get_object("liststore_satellite")
-    liststore_packet_type   = builder.get_object("liststore_packet_type")
-    button_ping_request            = builder.get_object("button_ping_request")
-    button_enter_hibernation       = builder.get_object("button_enter_hibernation")
-    button_deactivate_module       = builder.get_object("button_deactivate_module")
-    button_erase_memory            = builder.get_object("button_erase_memory")
-    button_set_parameter           = builder.get_object("button_set_parameter")
-    button_data_request            = builder.get_object("button_data_request")
-    button_leave_hibernation       = builder.get_object("button_leave_hibernation")
-    button_activate_payload        = builder.get_object("button_activate_payload")
-    button_force_reset             = builder.get_object("button_force_reset")
-    button_get_parameter           = builder.get_object("button_get_parameter")
-    button_broadcast_message       = builder.get_object("button_broadcast_message")
-    button_activate_module         = builder.get_object("button_activate_module")
-    button_deactivate_payload      = builder.get_object("button_deactivate_payload")
-    button_get_payload_data        = builder.get_object("button_get_payload_data")
-    treeview_events         = builder.get_object("treeview_events")
+    window                          = builder.get_object("window_main")
+    button_preferences              = builder.get_object("button_preferences")
+    switch_button                   = builder.get_object("switch_button")
+    switch_doppler                  = builder.get_object("switch_doppler")
+    toolbutton_about                = builder.get_object("toolbutton_about")
+    combobox_satellite              = builder.get_object("combobox_satellite")
+    combobox_packet_type            = builder.get_object("combobox_packet_type")
+    liststore_satellite             = builder.get_object("liststore_satellite")
+    liststore_packet_type           = builder.get_object("liststore_packet_type")
+    button_ping_request             = builder.get_object("button_ping_request")
+    button_enter_hibernation        = builder.get_object("button_enter_hibernation")
+    button_deactivate_module        = builder.get_object("button_deactivate_module")
+    button_erase_memory             = builder.get_object("button_erase_memory")
+    button_set_parameter            = builder.get_object("button_set_parameter")
+    button_data_request             = builder.get_object("button_data_request")
+    button_leave_hibernation        = builder.get_object("button_leave_hibernation")
+    button_activate_payload         = builder.get_object("button_activate_payload")
+    button_force_reset              = builder.get_object("button_force_reset")
+    button_get_parameter            = builder.get_object("button_get_parameter")
+    button_broadcast_message        = builder.get_object("button_broadcast_message")
+    button_activate_module          = builder.get_object("button_activate_module")
+    button_deactivate_payload       = builder.get_object("button_deactivate_payload")
+    button_get_payload_data         = builder.get_object("button_get_payload_data")
+    button_tx_pkt                   = builder.get_object("button_tx_pkt")
+    combobox_sdr                    = builder.get_object("combobox_sdr")
+    liststore_sdr_devices           = builder.get_object("liststore_sdr_devices")
+    entry_carrier_frequency         = builder.get_object("entry_carrier_frequency")
+    entry_sample_rate               = builder.get_object("entry_sample_rate")
+    spinbutton_tx_gain              = builder.get_object("spinbutton_tx_gain")
+    treeview_events                 = builder.get_object("treeview_events")
 
-    assert window                   != None
-    assert button_preferences       != None
-    assert toolbutton_about         != None
-    assert liststore_satellite      != None
-    assert liststore_packet_type    != None
-    assert button_ping_request             != None
-    assert button_enter_hibernation        != None
-    assert button_deactivate_module        != None
-    assert button_erase_memory             != None
-    assert button_set_parameter            != None
-    assert button_data_request             != None
-    assert button_leave_hibernation        != None
-    assert button_activate_payload         != None
-    assert button_force_reset              != None
-    assert button_get_parameter            != None
-    assert button_broadcast_message        != None
-    assert button_activate_module          != None
-    assert button_deactivate_payload       != None
-    assert button_get_payload_data         != None
-    assert treeview_events          != None
+    assert window                           != None
+    assert button_preferences               != None
+    assert switch_button                    != None
+    assert switch_doppler                   != None
+    assert toolbutton_about                 != None
+    assert combobox_satellite               != None
+    assert combobox_packet_type             != None
+    assert liststore_satellite              != None
+    assert liststore_packet_type            != None
+    assert button_ping_request              != None
+    assert button_enter_hibernation         != None
+    assert button_deactivate_module         != None
+    assert button_erase_memory              != None
+    assert button_set_parameter             != None
+    assert button_data_request              != None
+    assert button_leave_hibernation         != None
+    assert button_activate_payload          != None
+    assert button_force_reset               != None
+    assert button_get_parameter             != None
+    assert button_broadcast_message         != None
+    assert button_activate_module           != None
+    assert button_deactivate_payload        != None
+    assert button_get_payload_data          != None
+    assert button_tx_pkt                    != None
+    assert combobox_sdr                     != None
+    assert liststore_sdr_devices            != None
+    assert entry_carrier_frequency          != None
+    assert entry_sample_rate                != None
+    assert spinbutton_tx_gain               != None
+    assert treeview_events                  != None
 
     # About dialog
     aboutdialog_spacelab_transmitter = builder.get_object("aboutdialog_spacelab_transmitter")
@@ -85,6 +105,11 @@ def test_ui():
     entry_preferences_general_country   = builder.get_object("entry_preferences_general_country")
     entry_preferences_general_location  = builder.get_object("entry_preferences_general_location")
     entry_preferences_general_callsign  = builder.get_object("entry_preferences_general_callsign")
+    radiobutton_doppler_tle_file        = builder.get_object("radiobutton_doppler_tle_file")
+    filechooser_doppler_tle_file        = builder.get_object("filechooser_doppler_tle_file")
+    radiobutton_doppler_network         = builder.get_object("radiobutton_doppler_network")
+    entry_doppler_address               = builder.get_object("entry_doppler_address")
+    entry_doppler_port                  = builder.get_object("entry_doppler_port")
     filechooserbutton_logfile           = builder.get_object("logfile_chooser_button")
 
     assert dialog_preferences                   != None
@@ -94,4 +119,9 @@ def test_ui():
     assert entry_preferences_general_country    != None
     assert entry_preferences_general_location   != None
     assert entry_preferences_general_callsign   != None
+    assert radiobutton_doppler_tle_file         != None
+    assert filechooser_doppler_tle_file         != None
+    assert radiobutton_doppler_network          != None
+    assert entry_doppler_address                != None
+    assert entry_doppler_port                   != None
     assert filechooserbutton_logfile            != None