How many aircraft can the D-RTK 3 Relay Fixed Deployment Version connect to simultaneously?

The D-RTK 3 Relay Fixed Deployment Version can connect to only one aircraft at a time.

Related Questions

IS the DJI M400 compatible with DJI-RTK 3 Multifunctional Station?
Yes it is.
Does DJI Matrice 400 support 4G Enhanced Transmission?
Yes. The aircraft supports the installation of two enhanced 4G video transmission modules.
Does DJI Matrice 400 support D-RTK 3?
Yes.