The type L29(7-16) is a screw coupling unit designed specifcally to handle high power while suppressing intermodulation products. The (7-16) connector is most widely used in communication systems such as mobile phone base stations and radio transceivers communication systems such as mobile phone base stations and radio transceivers.The type L29(7-16) is a screw coupling unit designed specifcally to handle high power while suppressing intermodulation products. The (7-16) connector is most widely used in communication systems such as mobile phone base stations and radio transceivers.