240 coax cable is best used for short runs. It is thinner and more flexible than 400 coax cable, but it has more loss per foot. 240 Coax cable has about twice the loss of 400 coax cable, for this reason its length should be limited to no more than 20 feet. Because of its size and flexibility, 240 coax cable is easy to run in tight places. Both FME and N connectors can be used with 240 coax making it very versatile.