Inmarsat will be moving satellites soon in your region. They are moving a new satellite into place for the MEAS beam, while continuing to transmit from the existing one. All other beams including AMER, EMEA and APAC do not have scheduled satellite maneuvers in the plan.
Scheduled Change Date: August 14, 2023, at 15:00 UTC
The frequency is not changing
However, the FOOTPRINT is changing. The signal at this frequency will “move” East by about 20°. It will no longer cover most of Africa and Europe, but will instead cover Australia and Japan entirely.
| When | Name | Lon. | Satellite | Region | Frequency (Hz) | (kHz) | (MHz) | Manual Tuning Command |
| Before | MEAS | 63.9°E | Inmarsat 4-F2 | (Mid.East, Kazakhstan) | 1545915000 | 1545915 | 1545.915 | $JFREQ,1545915,600 |
| After | MEAS | 83°E | Inmarsat 6-F1 | (Mid.East, Australia) | 1545915000 | 1545915 | 1545.915 | $JFREQ,1545915,600 |
Our upcoming firmware release will include the new footprint definitions. Using the v6.1.1 firmware, the receiver will switch to the new beam footprints on August 14. For users with AUTO tuning set:
- Users between approximately 45°E and 50°E will see their default beam switch from MEAS to EMEA.
- Most users in Europe and Africa will continue to track the EMEA beam by default.
- Most users in the Middle East will continue to track the MEAS beam by default.
- Users between approximately 105°E and 115°E will see their default beam switch from APAC to MEAS.
If users continue with version v6.05 or v6.10:
- On the Western side of today’s MEAS beam users may need to manually re-tune to the EMEA beam if they no longer can see the new 83°E beam footprint.
- For AUTO tuning, no receivers on the western side will be impacted.
- Only manually-tuned receivers in Europe and Africa may be impacted.
- Users currently directly under the center of the APAC beam, meaning approximately between 130°E and 160°E, will now have redundancy in areas they had not previously expected to have redundant signals.
If users have firmware older than v6.05:
- Prior to version 6.05, the MEAS beam was only a regional beam covering Kazakhstan, and places further North from there.
- These regions will continue to see the MEAS beam, so no change should be noticed by users.
- If users in this region experience issues, they can manually tune to the EMEA beam.
For reference, this is the AMER, EMEA, and APAC beam information:
| Name | Lon. | Satellite | Region | Frequency (Hz) | (kHz) | (MHz) | Manual Tuning Command |
| AMER | 97.6°W | Inmarsat 4-F3 | (Americas) | 1545915000 | 1545915 | 1545.915 | $JFREQ,1545915,600 |
| EMEA | 24.8°E | Alphasat | (Europe and Africa) | 1545905000 | 1545905 | 1545.905 | $JFREQ,1545905,600 |
| APAC | 143.5°E | Inmarsat 4-F1 | (Asia and Australia) | 1545855000 | 1545855 | 1545.855 | $JFREQ,1545855,600 |