| 455 / | HD | TELECOMMUNICATIONS |
| 130 | DF | RECEIVER OR ANALOG MODULATED SIGNAL FREQUENCY CONVERTER {24} |
| 150.1 | DF | .~ Signal selection based on frequency (e.g., tuning) {13} |
| 154.1 | DF | .~.~ With indication of frequency, channel, or selector condition (e.g., tuning aid) {6} |
| 158.1 | ![]() | .~.~.~ Channel index indication {3} |
| 158.2 | DF | .~.~.~.~> With electronic digital indication {1} |
| 158.4 | DF | .~.~.~.~> With multiple display functions |
| 158.5 | DF | .~.~.~.~> Non-numeric display (e.g., call letters) |