Statements (11)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
gptkb:satellite
|
| gptkbp:frequency |
4 GHz
|
| gptkbp:introducedIn |
1950
|
| gptkbp:operatedBy |
gptkb:AT&T
|
| gptkbp:replacedBy |
TD-3
|
| gptkbp:usedFor |
long-distance telephone transmission
microwave relay |
| gptkbp:usedIn |
gptkb:North_America
|
| gptkbp:bfsParent |
gptkb:ESRO
|
| gptkbp:bfsLayer |
7
|
| https://www.w3.org/2000/01/rdf-schema#label |
TD-2
|