TK-1173A wide band mobile antenna 1.8 to 54MHz, tuner required Length 2.1m, 2/8" connector, comes complete with cable on solid base for fender mount. An automatic tuner (LDG, SGC or similiar) is required for operations. The tuner should be mounted as close as possible to the antenna. All in all a very comfortable antenna system which adjusts automatically to any frequency. Internal tuners of most rigs are usually not suitable.