diff --git a/Aircraft/Instruments-3d/SCR-522C/Dialogs/radios.xml b/Aircraft/Instruments-3d/SCR-522C/Dialogs/radios.xml
index 46dc1df03..b5dcfb37c 100755
--- a/Aircraft/Instruments-3d/SCR-522C/Dialogs/radios.xml
+++ b/Aircraft/Instruments-3d/SCR-522C/Dialogs/radios.xml
@@ -2,7 +2,7 @@
<PropertyList>
- <name>radios</name>
+ <name>SCR-522C-radio</name>
<width>550</width>
<modal>false</modal>
<layout>vbox</layout>
@@ -56,7 +56,7 @@
<label>Channel</label>
<live>true</live>
<!--<format>%.2f</format>-->
- <property>systems/comm/SCR-522C/frequencies/channel</property>
+ <property>/instrumentation/comm/SCR-522C/frequencies/channel</property>
</text>
<text>
<!--<label>xxxxxxx</label>-->
diff --git a/Aircraft/Instruments-3d/SCR-522C/Nasal/SCR-522C.nas b/Aircraft/Instruments-3d/SCR-522C/Nasal/SCR-522C.nas
new file mode 100644
index 000000000..c03d5ff71
--- /dev/null
+++ b/Aircraft/Instruments-3d/SCR-522C/Nasal/SCR-522C.nas
@@ -0,0 +1,150 @@
+#####################################################################################
+# This script provides the gui to set up the TR1133/SCR-522C radio #
+# using a BC-602-A control box #
+# #
+# Author Vivian Meazza June 2011 #
+# #
+# mods Hal V. Engel June 2011 #
+# #
+#####################################################################################
+
+# ================================ Initalize ======================================
+# Make sure all needed properties are present and accounted
+# for, and that they have sane default values.
+
+var channelA_node = props.globals.initNode("instrumentation/comm/channels/A-mhz", 0, "DOUBLE");
+var channelB_node = props.globals.initNode("instrumentation/comm/channels/B-mhz", 0, "DOUBLE");
+var channelC_node = props.globals.initNode("instrumentation/comm/channels/C-mhz", 0, "DOUBLE");
+var channelD_node = props.globals.initNode("instrumentation/comm/channels/D-mhz", 0, "DOUBLE");
+
+var channel_selected_node = props.globals.initNode("instrumentation/comm/SCR-522C/frequencies/channel-selected", 0, "INT");
+var tr_node = props.globals.initNode("instrumentation/comm/SCR-522C/tr", 0, "INT");
+props.globals.initNode("instrumentation/comm/SCR-522C/frequencies/channel", "", "STRING");
+props.globals.initNode("instrumentation/comm/SCR-522C/mask", 0, "BOOL");
+props.globals.initNode("instrumentation/comm/SCR-522C/tr-lock", 0, "BOOL");
+
+var comm_selected_node = props.globals.getNode("instrumentation/comm/frequencies/selected-mhz", 1);
+var comm_standby_node = props.globals.getNode("instrumentation/comm/frequencies/standby-mhz", 1);
+var comm1_selected_node = props.globals.getNode("instrumentation/comm[1]/frequencies/selected-mhz", 1);
+var comm1_standby_node = props.globals.getNode("instrumentation/comm[1]/frequencies/standby-mhz", 1);
+
+var channel = ["OFF","A","B","C","D"];
+setprop("instrumentation/comm/SCR-522C/frequencies/channel", channel[channel_selected_node.getValue()]);
+
+var Radio = gui.Dialog.new("sim/gui/dialogs/SCR-522C/dialog",
+ "Aircraft/Instruments-3d/SCR-522C/Dialogs/radios.xml");
+
+# gui.menuBind("radio", "dialogs.Radio.open()");
+
+# override controls.ptt
+
+controls.ptt = func {
+ # T/R/REM set to REM remote ptt switch controls transmitter
+ # print("intercept ptt for BC-602-A");
+ if (getprop("instrumentation/comm/SCR-522C/tr") == 0 and # set in REMote ptt switch mode
+ getprop("instrumentation/comm/SCR-522C/frequencies/channel-selected") > 0) # and radio is on
+ setprop("instrumentation/comm/ptt", arg[0]); # let remote ptt control transmitter
+ else # otherwise
+ setprop("instrumentation/comm/ptt", 0); # the remote ptt does nothing
+}
+
+# =============================== listeners ===============================
+#
+
+var listenChannelSelected = func(n) {
+ var channel_no = n.getValue();
+
+ if (channel_no == nil) channel_no = 0;
+
+ # print("channel", channel_no, " ", channel[channel_no]);
+ setprop("instrumentation/comm/SCR-522C/frequencies/channel", channel[channel_no]);
+ if (channel_no == 1) {
+ setprop("instrumentation/comm/frequencies/selected-mhz", getprop("instrumentation/comm/channels/A-mhz"));
+ setprop("instrumentation/comm/frequencies/standby-mhz", getprop("instrumentation/comm/channels/A-mhz"));
+ }
+ else if (channel_no == 2){
+ setprop("instrumentation/comm/frequencies/selected-mhz", getprop("instrumentation/comm/channels/B-mhz"));
+ setprop("instrumentation/comm/frequencies/standby-mhz", getprop("instrumentation/comm/channels/B-mhz"));
+ }
+ if (channel_no == 3){
+ setprop("instrumentation/comm/frequencies/selected-mhz", getprop("instrumentation/comm/channels/C-mhz"));
+ setprop("instrumentation/comm/frequencies/standby-mhz", getprop("instrumentation/comm/channels/C-mhz"));
+ }
+ else if (channel_no == 4){
+ setprop("instrumentation/comm/frequencies/selected-mhz", getprop("instrumentation/comm/channels/D-mhz"));
+ setprop("instrumentation/comm/frequencies/standby-mhz", getprop("instrumentation/comm/channels/D-mhz"));
+ }
+}
+
+var listenTr = func(t) {
+ var tr = t.getValue();
+ # print("tr ",tr);
+
+ if (tr == nil) tr = 0;
+ if (tr == 2 and getprop("instrumentation/comm/SCR-522C/frequencies/channel-selected") > 0)
+ setprop("instrumentation/comm/ptt", 1);
+ else if (tr == 1)
+ setprop("instrumentation/comm/ptt", 0);
+}
+
+var listenTrLock = func(i) {
+ var tr_lock = i.getValue();
+ # print("tr_lock");
+
+ if (tr_lock == nil) tr_lock = false;
+ if (tr_lock)
+ setprop("/instrumentation/comm/SCR-522C/tr", 2);
+ else if (getprop("/instrumentation/comm/SCR-522C/tr") == 2)
+ setprop("/instrumentation/comm/SCR-522C/tr", 1);
+
+}
+
+var SCR_522C_init = func(){
+
+ print ("initializing SCR-522C ...");
+
+ var channelA_init = comm_selected_node.getValue();
+ var channelB_init = comm_standby_node.getValue();
+ var channelC_init = comm1_selected_node.getValue();
+ var channelD_init = comm1_standby_node.getValue();
+
+ channelA_node.setValue(channelA_init);
+ channelB_node.setValue(channelB_init);
+ channelC_node.setValue(channelC_init);
+ channelD_node.setValue(channelD_init);
+
+ comm_selected_node.setValue(0);
+ comm_standby_node.setValue(0);
+ comm1_selected_node.setValue(0);
+ comm1_standby_node.setValue(0);
+
+ # over ride F12
+ setprop("input/keyboard/key[268]/binding/dialog-name", "SCR-522C-radio");
+ setprop("input/keyboard/key[268]/binding/command", "dialog-show");
+
+ # Disable the menu item "Equipment > radio" so we use our own gui: " > Radio".
+ # print("Disabling Menu: Equipment -> Radios GUI");
+ # override default radio menu
+ gui.menuEnable("radio",0);
+ setprop("sim/bindings/menu/binding[35]/dialog-name", "SCR-522C-radio");
+ setprop("sim/menubar/default/menu[5]/item[3]/binding/dialog-name", "SCR-522C-radio");
+ setprop("sim/menubar/default/menu[5]/item[3]/name", "SCR-522C-radio");
+ gui.menuEnable("SCR-522C-radio",1);
+
+ # gui.menuBind("radio", "dialogs.Radio.open()");
+
+
+# =============================== start listeners ===============================
+#
+
+ setlistener("instrumentation/comm/SCR-522C/frequencies/channel-selected", listenChannelSelected, 1, 0);
+
+ setlistener("instrumentation/comm/SCR-522C/tr", listenTr, 1, 0);
+
+ setlistener("instrumentation/comm/SCR-522C/tr-lock", listenTrLock, 1, 0);
+
+ # print("... done");
+
+} # end func initialize
+
+setlistener("sim/signals/fdm-initialized", SCR_522C_init);
\ No newline at end of file
diff --git a/Aircraft/Instruments-3d/SCR-522C/README b/Aircraft/Instruments-3d/SCR-522C/README
new file mode 100644
index 000000000..fa025e145
--- /dev/null
+++ b/Aircraft/Instruments-3d/SCR-522C/README
@@ -0,0 +1,20 @@
+To enable full functionality of the SCR-522C/TR1133 radio there are several things
+that you will need to do.
+
+First you will need to add the following to the <nasal> section of your *set.xml
+file.
+
+<file>Aircraft/Instruments-3d/SCR-522C/Nasal/SCR-522C.nas</file>
+
+This will enable the F12 key to bring up the frequencies dialog. It will also over ride the
+Equipment --> radios menu item so that it brings up the correct menu for the SCR-522C/TR1133
+radios.
+
+For dark conditions when cabin/cockpit illumination is used all of the radio models object respond to
+
+<property>/controls/lighting/cabin-norm</property>
+
+If you are using a different property for you cabin/cockpit lights you will need to map your property
+to /controls/lighting/cabin-norm.
+
+
\ No newline at end of file