Broadband services are a modern marvel, utilizing multiple frequency bands to transmit signals over wires. Faults on broadband lines can cause slower speeds, but surprisingly, ADSL can even work over a wet string. One tech enthusiast successfully tested ADSL over a 2m wet string, achieving decent speeds. The experiment highlights the importance of addressing faults that may appear as simply low speed. Adding tin cans to both ends even allows for voice and broadband to work on the same wet string. Overall, the test proves the adaptability and versatility of broadband technology.
https://www.revk.uk/2017/12/its-official-adsl-works-over-wet-string.html