Blagovest-11L (Cosmos 2520) a series of four planned communications satellites for Russia’s internal services, which includes several other projects.
| Name of Satellite | Blagovest-11L (Cosmos 2520) |
| Purpose | Communications |
| Contractor | ISS Reshetnev |
| Country of Contractor | Russia |
| Launch Mass (kg.) | 3 000 |
| Class of Orbit | GEO |
| Perigee (km) | 35 781 |
| Expected Lifetime (yrs.) | 15 |
| Date of Launch | 16.08.2017 |
| Launch Site | Baikonur Cosmodrome |
| Launch Vehicle | Proton |
| COSPAR Number | 2017-046A |
| NORAD Number | 42907 |
The spacecraft and payload were built by the Russian ICS Reshetnev on the basis of the Express-2000 bus .
