Issues in Broadband power lines

There are many issues that Broadband power lines or BPL is facing. One, they are unable to pass through the transformers so repeaters should be attached to the transformers. Another issue is that the signal strength and operating frequency. The Broadband power lines or BPL is designed to use frequencies in the 10 to 30 MHz range that have been used many years now by licensed amateur radio operators and international shortwave unshielded to act as transmitters for the signals that they carry broadcasters. It is also used by military and aeronauticals.