The standard antenna cable length is 50 feet. If you need more we offer antenna lengths up to 250 feet without a GPS preamplifier. If you need more than 250 feet of cable then a preamp is required. You can run an additional 250 feet of cable for every preamp installed and you can have up to 3 preamps. This will allow you to run a total of 1000 feet of cable. For more information click here.