342 / | HD | COMMUNICATIONS: DIRECTIVE RADIO WAVE SYSTEMS AND DEVICES (E.G., RADAR, RADIO NAVIGATION) |
350 | DF | DIRECTIVE {10} |
352 | DF | .~ Including a satellite {6} |
357.01 | DF | .~.~ With position indicating {5} |
357.17 | .~.~.~ With particular action taken responsive to position (i.e., excavating, farming, and surveying) |