| Answer | Crossword Clue |
|---|---|
| RRS | Training systs. |
| METHS | Systs. |
| PAS | Speaker systs. |
| PAS | Audio systs. |
| PAS | Communication systs. |
| PAS | Sound systs. |
| RTES | Road systs. |
| GOVTS | Political systs. |
| LANS | Computer-linked systs. |
| PAS | Mass communication systs. |
| HVACS | Climate control systs. |
| IVS | Fluid delivery systs. |
| WEBTVS | Some Internet systs. |
| AMFM | Like some broadcasting systs. |
