SGPropertyNode_ptr power_btn_node;
SGPropertyNode_ptr freq_node; // primary freq
SGPropertyNode_ptr alt_freq_node; // standby freq
+ SGPropertyNode_ptr is_loc_freq_node;// is the primary freq a loc/gs (paired) freq?
SGPropertyNode_ptr sel_radial_node; // selected radial
SGPropertyNode_ptr vol_btn_node;
SGPropertyNode_ptr ident_btn_node;