The PAL connector is also called the IEC connector. The IEC connector is generally attached to the antenna cable. In most cases, it has a male connector on one side and a female connector on the other side. This makes it easy to extend the cable without having to use barrel connectors as we do in the US. This means you can extend the antenna signal more easily and with less loss.
The PAL connector is commonly used in Europe and Australia to connect coaxial cables with each other and with terrestrial VHF/UHF roof antennas, antenna signal amplifiers, CATV distribution equipment, and TV sets, and FM and DAB radio receivers.