| 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} |
| 161.1 |  | .~.~ Frequency scanning {9} |
| 161.2 | DF | .~.~.~> With processor control |
| 161.3 | DF | .~.~.~> Using signal strength or quality |
| 162.1 | DF | .~.~.~> Motor activated {1} |
| 164.1 | DF | .~.~.~> With automatic frequency control {1} |
| 165.1 | DF | .~.~.~> With frequency synthesizer |
| 166.1 | DF | .~.~.~> With channel skipping selection {1} |
| 167.1 | DF | .~.~.~> With dual sweeping |
| 168.1 | DF | .~.~.~> Multiband |
| 169.1 | DF | .~.~.~> With particular variable voltage or current tuning {1} |