Yes, but only one of them can be paired to the tracker, because the GS sends back an acknowledgement for each telemetry packet it gets from the tracker, and you don't want two GS trying to transmit back to the tracker at the same time. Through the USB interface on the newer ground stations, there is a command to send to put it into monitor mode, which is a listen-only mode to facilitate this. To do this through the phone would require that the phone be set up without the tracker in the device list, and set the second GS manually to that frequency.