A method comprising securing orientation of a first type of an antenna and a second type of an antenna, wherein the first type of an antenna and the second type of an antenna are comprised in a terminal device, determining if the terminal device is radio resource control connected to a cell provided by an access node comprised, at least partly, in a satellite or relayed through the satellite, and if it is, estimating a link loss based, at least partly, on downlink receive measurements obtained using the first type of an antenna, determining an uplink link budget based on the estimated link loss, determining if the uplink link budget is greater than a threshold for a transmit antenna, wherein the transmit antenna is the first type of the antenna or the second type of an antenna, and attempting a transmission to the access node using the transmit antenna if the uplink link budget is greater than the threshold for the transmission antenna.