| 455 / | HD | TELECOMMUNICATIONS |
| 899 | DF | MISCELLANEOUS {5} |
| FOR 106 | DF | .~ Plural transmitters or receivers (i.e., more than two stations) (455/49.1) {4} |
| FOR 113 | DF | .~.~ With central station (e.g., master, etc.) (455/53.1) {2} |
| FOR 114 | DF | .~.~.~ To or from mobile station (455/54.1) {3} |
| FOR 116 | ![]() | .~.~.~.~ Using radiating transmission line (455/55.1) |