Heating for VHF antenna with dipole fields

摘要

The heating is provided by electric heating elements (1) with resistance wires, which are integrated in the dipole arms (2) and the dipole support elements (3) of the antenna. and electrically insulated from them. The elements are provided with metal sleeves containing spaced resistance wires parallel to the sleeve axis. The space between them is filled with an electrically-insulating, heat-conductive material, for good thermal contact with the dipole arms and dipole support elements.