FrSky ARCHER GR6 2.4GHz ACCESS Receiver w/ VariometerIn addition to all this, the SBUS IN port on the GR6 can also be used as a redundancy receiver along with any other FrSky ACCESS capable receiver equipped with an SBUS port. The best available signal will be used to ensure superior connectivity. All of the Archer receivers are hyper matched with the ACCESS protocol. They not only feature wireless firmware upgrades, increased range, and telemetry performance, the GR6 now supports more functions like