RG6 is not recommended as it is 75 ohm, and certainly not for a run of over 100ft (30m) due to DC resistance. ( 不建议使用RG6,因为它的电阻为75欧姆,并且由于直流电阻的原因,在运行超过100ft(30m)时肯定不建议这样做。 ) LMR400 should suit most installations. ( LMR400应该适合大多数安装。