Methods and systems are disclosed for changing between multiple radio frequency (RF) systems. The method comprising transmitting, by a first radio frequency (RF) transmitter of a first RF system, a first RF signal from an antenna, receiving, by a first RF receiver of the first RF system, a second RF signal from the antenna, and receiving, by a second RF receiver of a second RF system, the second RF signal from the antenna, wherein a first RF port of the first RF system and a second RF port of the second RF system are both connected to a common RF port of the antenna, and wherein the first and second RF systems operate with overlapping frequency bands.