Statements (21)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
gptkb:navigation
|
| gptkbp:alsoKnownAs |
gptkb:Four_Course_Radio_Range
|
| gptkbp:category |
air traffic control
aviation navigation radio navigation |
| gptkbp:enables |
course guidance
|
| https://www.w3.org/2000/01/rdf-schema#label |
Radio Range
|
| gptkbp:introducedIn |
1920s
|
| gptkbp:operatesIn |
low frequency band
|
| gptkbp:phasedOutIn |
1970s
|
| gptkbp:provides |
audio signals
|
| gptkbp:replacedBy |
gptkb:VOR
|
| gptkbp:requires |
gptkb:radio_station
|
| gptkbp:type |
gptkb:Morse_code
|
| gptkbp:usedBy |
air traffic controllers
pilots |
| gptkbp:usedFor |
aircraft navigation
|
| gptkbp:usedIn |
gptkb:Europe
gptkb:United_States |
| gptkbp:bfsParent |
gptkb:Saint_John_Parish
|
| gptkbp:bfsLayer |
6
|