fixed US915: can't change frequencies or duty cycles on an RN2903 so I changed status and the drrange to the max which is 3
fixed US915: can't change frequencies or duty cycles on an RN2903 so I changed status and the drrange to the max which is 3

TheThingsNetwork/arduino-device-lib,TheThingsNetwork/arduino-device-lib,TheThingsNetwork/arduino-device-lib