There is a error in RscHCReply that assigns the wrong shortcut key to menu entry Radio.

class RscHCReply
{
title = "$STR_REPLY";
access = 0;
atomic = 0;
vocabulary = "";
class items
{

		class SITREP
		{
			title = "$STR_HC_MENU_SITREP";
			shortcuts[] = {2};
			shortcutsAction = "CommandingMenu1";
			show = "HCIsLeader";
			enable = "HCNotEmpty";
			speechId = 0;
			command = -5;
			class Params
			{
				expression = "'SITREP' call BIS_HC_path_menu";
			};
		};
		class Communication
		{
			title = "$STR_rscMenu.hppRscGroupRootMenu_Items_Communication0";
			shortcuts[] = {9};
			shortcutsAction = "CommandingMenu8";
			menu = "#User:BIS_MENU_GroupCommunication";
		};
		class UserRadio
		{
			title = "$STR_RADIO_CUSTOM";
			shortcuts[] = {10};
			shortcutsAction = "CommandingMenu9";
			menu = "#CUSTOM_RADIO";
		};
		class Radio
		{
			title = "$STR_RADIO";
			shortcuts[] = {11};
			shortcutsAction = "CommandingMenu9";
			menu = "RscRadio";
			enable = "HasRadio";
		};

};
};

Radio should be... (CommandingMenu0 not 9)

class Radio
{
title = "$STR_RADIO";
shortcuts[] = {11};
shortcutsAction = "CommandingMenu0";
menu = "RscRadio";
enable = "HasRadio";
};

Also could you change the HC supports menu in RscHCReply to use the same entries as the comms menu (RscMenuReply).

At the moment RscHCReply uses #User:BIS_MENU_GroupCommunication

class Communication
{
title = "$STR_rscMenu.hppRscGroupRootMenu_Items_Communication0";
shortcuts[] = {9};
shortcutsAction = "CommandingMenu8";
menu = "#User:BIS_MENU_GroupCommunication";
};

Unlike RscMenuReply that uses #User:BIS_fnc_addCommMenuItem_menu

class Communication
{
title = "$STR_rscMenu.hppRscGroupRootMenu_Items_Communication0";
shortcuts[] = {9};
shortcutsAction = "CommandingMenu8";
menu = "#User:BIS_fnc_addCommMenuItem_menu";
show = "1";
enable = "1";
speechId = 0;
};

So when you are in HC mode you do not have access to supports. Unless their is a reason it is this way. Ta