A splitter RF cable can be used to connect an antenna to a 5G modem. One end of the cable is connected to the antenna, which receives and transmits radio - frequency signals. The other two ends are connected to the 5G modem. This setup is crucial for enhancing the signal reception and transmission capabilities of the 5G modem. In a 5G network, the antenna captures the high - frequency 5G signals from the base station. The splitter RF cable then effectively distributes these signals to the 5G modem. This allows the modem to process the signals and provide high - speed internet connectivity. It's important to ensure proper installation and compatibility between the cable, antenna, and 5G modem to optimize performance and avoid signal loss.