A method for changing between multiple radio frequency, RF, systems, the method comprising: transmitting, by a first radio frequency, RF, transmitter of a first RF system (150A,230A), a first RF signal to an antenna (160, 232); receiving, by a first RF receiver (158A,230A) of the first RF system, a second RF signal from the antenna; and receiving, by a second RF receiver of a second RF system (158B, 230B), the second RF signal from the antenna; wherein: a first RF system port of the first RF system is connected to a common RF antenna port of the antenna with a first RF link, a second RF system port of the second RF system is connected to the common RF antenna port of the antenna with a second RF link, a first termination unit couples the first RF link to ground when the first termination unit is activated, wherein the first termination unit comprises a resistor, a second termination unit couples the second RF link to ground when the second termination unit is activated, wherein the second termination unit comprises a resistor, the first and second RF systems operate with overlapping frequency bands; changing from the first RF system to the second RF system, wherein the changing comprises: activating the first termination unit, wherein activating the first termination unit isolates the first RF system by conducting RF transmission energy between the first RF system and the antenna to ground; deactivating the second termination unit, wherein the deactivating the second termination unit enables the second RF system to conduct RF transmission energy to the antenna; transmitting, by a second RF transmitter of the second RF system, a third RF signal to the antenna; receiving, by the second RF receiver of the second RF system, a fourth RF signal from the antenna; determining, by a first RF detection unit, whether the first RF system port is being used; and responsive to determining that the first RF system port is not being used, activating the first termination unit between the first RF system and the antenna, wherein activating the first termination unit isolates the first RF system by conducting RF transmission energy between the first RF system and the antenna to ground. transmitting, by a first radio frequency, RF, transmitter of a first RF system (150A,230A), a first RF signal to an antenna (160, 232); receiving, by a first RF receiver (158A,230A) of the first RF system, a second RF signal from the antenna; and receiving, by a second RF receiver of a second RF system (158B, 230B), the second RF signal from the antenna; wherein: a first RF system port of the first RF system is connected to a common RF antenna port of the antenna with a first RF link, a second RF system port of the second RF system is connected to the common RF antenna port of the antenna with a second RF link, a first termination unit couples the first RF link to ground when the first termination unit is activated, wherein the first termination unit comprises a resistor, a second termination unit couples the second RF link to ground when the second termination unit is activated, wherein the second termination unit comprises a resistor, the first and second RF systems operate with overlapping frequency bands; a first RF system port of the first RF system is connected to a common RF antenna port of the antenna with a first RF link, a second RF system port of the second RF system is connected to the common RF antenna port of the antenna with a second RF link, a first termination unit couples the first RF link to ground when the first termination unit is activated, wherein the first termination unit comprises a resistor, a second termination unit couples the second RF link to ground when the second termination unit is activated, wherein the second termination unit comprises a resistor, the first and second RF systems operate with overlapping frequency bands; changing from the first RF system to the second RF system, wherein the changing comprises: activating the first termination unit, wherein activating the first termination unit isolates the first RF system by conducting RF transmission energy between the first RF system and the antenna to ground; deactivating the second termination unit, wherein the deactivating the second termination unit enables the second RF system to conduct RF transmission energy to the antenna; transmitting, by a second RF transmitter of the second RF system, a third RF signal to the antenna; receiving, by the second RF receiver of the second RF system, a fourth RF signal from the antenna; activating the first termination unit, wherein activating the first termination unit isolates the first RF system by conducting RF transmission energy between the first RF system and the antenna to ground; deactivating the second termination unit, wherein the deactivating the second termination unit enables the second RF system to conduct RF transmission energy to the antenna; transmitting, by a second RF transmitter of the second RF system, a third RF signal to the antenna; receiving, by the second RF receiver of the second RF system, a fourth RF signal from the antenna; determining, by a first RF detection unit, whether the first RF system port is being used; and responsive to determining that the first RF system port is not being used, activating the first termination unit between the first RF system and the antenna, wherein activating the first termination unit isolates the first RF system by conducting RF transmission energy between the first RF system and the antenna to ground.