Shakespeare Style 4351: 3' COMBINATION AM/FM: This 3' combination antenna features Shakespeare's exclusive distributive load for super signal pulling power. The coil is permanently sealed in Shakespeare's white fiberglass. The Style 4351 has a 1"-14 thread nylon ferrule for use with standard marine mounts. Includes 10' RG-62 coax with Motorola plug installed, One section, 39" overall length, Nylon ferrule with standard 1in-14 thread, Shakespeare Limited Warranty: 2 years. 93 ohms Impedance, vertical ploarization, imni-directional.