To connect the antenna to the wireless radio invariably requires a length of coaxial cable. Most antennas have N type or RP-SMA plugs while the radio modules often have a MMCX connectors. This connection is usually achieved by having a small length (10-20cm) of flexible cable called a pigtail to bring the antenna port to a bulkhead then another longer length (1-5 meters) of low loss coaxial cable connecting the antenna to the bulkhead.