The Hawking Technology Heavy Duty Outdoor 30 foot Extension Cable is made with the highest quality material to provide unrivaled reliability and performance. Antenna cables are subject to signal degradation due to the length of the cable. The longer the cable is the greater the signal loss. This results in a loss in overall performance from the antenna. Hawking Technology ensures the lowest possible cable signal loss by using high grade cable material and advanced designs. The HAC10N and HAC30N both utilize, RG-213/U cable material which results in lower signal (db) loss/meter. Your final result is the desired and expected performance from your antenna. The HAC10N and HAC30N are completely weatherproof and able to withstand the harshest conditions.