| Nr | Parameter2) | Description | Comments |
| 1 | Radiocommunication service | Aeronautical mobile (R) | - |
| 2 | Application | EPIRBs | Maritime Emergency Position Indicating Radio Beacons (EPIRBs). Global Maritime Distress and Safety System (GMDSS) / Transmission of radio signals on 121,5 MHz or 121,5 MHz and 243 MHz for locating vessels, survival craft and man-overboard in distress. |
| 3 | Frequency band | A: 121.45 - 121.55 MHz B: 242.95 - 243.05 MHz | Band A: 121.5 MHz homing frequency. Band B: 243.0 MHz homing frequency. |
| 4 | Channelling | - | - |
| 5 | Modulation / Occupied bandwidth | A3X | - |
| 6 | Direction / Separation | - | - |
| 7 | Transmit power / Power density | Max. 100 mW e.r.p.e.p. | Min. 75 mW e.r.p.e.p. (Effective Radiated Peak Envelope Power). Min. 25 mW e.r.p.e.p. for man-overboard devices. |
| 8 | Channel access and occupation rules | - | - |
| 9 | Authorisation regime | Switzerland: Notification required. Liechtenstein: Individual assignment required. | Radio equipment is listed in the 'Ship station license'. Radio equipment shall not be operated on Swiss territory and the Principality of Liechtenstein. |
| 10 | Additional essential requirements | EN 300 152 | See also SR 784.101.21, VFAV, Anhang 1. |
| 11 | Frequency planning assumptions | - | - |
| 12 | Planned changes | - | - |
| 13 | Reference | EN 300 152 /-/-. | Effective use of spectrum / ECC Decisions / ECC Recommendations. |
| 14 | Notification number | 2009/9501/CH G/TBT/N/CHE/111 | - |
| 15 | Remarks | EN 60945, SOLAS, ITU-R, IMO. | - |
Normative part: 1 to 11
Informative part: Nr 12 to 15
1) RIR for similar and/or other applications are available under: https://www.bakom.admin.ch/bakom/en/home/frequenzen-antennen/nationaler-frequenzzuweisungsplan/schnittstellen-anforderungen.html
2) For explanations and legal status, please refer to basis document 784.101.21 / RIR0000
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