| 343 / | HD | COMMUNICATIONS: RADIO WAVE ANTENNAS |
| 700 R | DF | ANTENNAS {58} |
| 907 | DF | .~ Antenna components {3} |
| 909 | DF | .~.~ Refracting means and radio wave energy filters (e.g., lenses and polarizers) {2} |
| 911 R | ![]() | .~.~.~ Dielectric type {1} |
| 911 L | DF | .~.~.~.~> Luneberg type |