MAIN antenna - receives and send information / AUX antenna - only receives. In other words AUX antenna is used for data correction. You can use your SMA LTE antenna for MAIN and CABLE (assuming it's the magnetic one) for AUX. Make sure that the antenna you call CABLE is not GPS. You can send me the picture if this confuses you so I can explain.
Hi, i have connected PR1US440 sma antenna to Aux port and no antenna to main port. However, it both send and receive. Is this possible?