The diamond wd330s broadband hf dipole is designed for commercial operation from 2 to 28.6mhz. The antenna comes fully assembled and pre-tuned so no measuring or cutting is required. The antenna is constructed from high quality pvc covered stranded copper wire, complete with fibreglass spreaders, matching network and balun (25m rope provided). The balun provides for single 50 ohm feed line operation on all bands. The wd330s should be installed as a flat-top for maximum efficiency, but can be used as an inverted 'v' or sloper antenna. Proximity of ground and nearby structures may affect the performance of the antenna, so rearrangement of the antenna may be required to achieve a good vswr.* frequency 2-28.6mhz * radiator length: 10m (32ft) * type: terminated folded dipole * radiation: directional * feed line: 50 ohm coax * connector: so-239 * swr: av <2:1 to <3:1 * no trans match required * power: 150w (pep) * spreaders: 6cm (18in) * weight 2.1kg.