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.