ground control
| frequency
| ground control | |
| acrid. | tratamiento terrestre |
| commun. life.sc. | puntos de apoyo |
| rem.sens. | control primario |
| Frequency | |
| pharma. | Frecuencia |
| frequency | |
| gen. | frecuencia |
| comp., MS | frecuencia |
| ecol. | frecuencia |
| forestr. | frequencia |
| nat.sc. life.sc. agric. | constancia |
|
ground control : 18 phrases in 9 subjects |
| Aviation | 1 |
| Coal | 1 |
| Commerce | 2 |
| Communications | 1 |
| General | 1 |
| Measuring instruments | 1 |
| Military | 1 |
| Technology | 4 |
| Transport | 6 |