The following frequencies are used to transmit ACARS data to and from the aircraft. All frequencies in Mhz.
| Frequency |
Region / Country |
| 131.550 | Primary Channel worldwide |
| 129.125 | Additional channel for USA & Canada |
| 130.025 | Secondary channel for USA and Canada |
| 130.425 | Additional channel for USA |
| 130.450 | Additional channel for USA & Canada |
| 131.125 | Additional channel for USA |
| 131.450 | Primary channel for Japan |
| 131.475 | Air Canada company channel |
| 131.525 | European secondary |
| 131.725 | Primary channel in Europe |
| 136.700 | Additional channel for USA |
| 136.750 | Additional channel for USA |
| 136.800 | Additional channel for USA |
| 136.900 | European secondary |
| 136.850 | SITA North American Frequency |
| 136.750 | New European frequency |
| 131.850 | New European frequency |