The horizontal wideband Fan Antenna ADP 0526 is suitable for area coverage with sky waves.
The omni-directional pattern allows communication links in any direction.
At lower frequencies the vertical diagram is null-free so that the highest field strength is oriented vertically.
Therefore, with a single reflection from the ionosphere optimal short range coverage is provided.
At higher frequencies the take-off angle is flatter as required for service areas at medium to large distances up to several thousand kilometres.
The antennas are designed and fabricated with quality assurance uppermost. The basis for mechanical loading calculations is DIN 4131 and higher load factors can be accommodated on request. The choice of materials is based on long term experience gained in the field of corrosion and statics. For example, HF conducting parts such as dipoles and feed lines are fabricated from sea-water resistant aluminium or aluminium alloys, the smallest fan antenna also makes use of fine stranded bronze rope. Fixtures and standard parts are made from stainless steel. Guy ropes are fabricated either from stainless steel or Parafil. All insulators are made from glazed low-loss ceramic. The masts are constructed from hot-dip galvanized steel. 皇冠金花下载