| 219 / | HD | ELECTRIC HEATING |
| 678 | DF | MICROWAVE HEATING {15} |
| 745 | DF | .~ Field modification {3} |
| 746 | ![]() | .~.~ With power feed structure {3} |
| 747 | DF | .~.~.~> Phase shifting |
| 748 | DF | .~.~.~> Radiator (e.g., antenna, etc.) {1} |
| 750 | DF | .~.~.~> With tuning or particular modes |