DELTA H421 DMV band antennas. The logoperiodic design ensures that the antenna gain is uniform throughout the DMV band. In this case, as a rule, with an increase in the number of vibrators increases the gain, increases the operating frequency range, respectively, increase the size of the antenna.
The range and quality of reception depend on the antenna gain, the place of its installation, the height of its suspension above the ground, the power of television transmitters, the height of suspension above the ground of the transmitting antennas of the TV centre, the terrain, the time of year, the level of interference and a number of other factors.
Electrical parts and fasteners are made of steel. Protective and decorative coating with thickness of 70-100 microns is provided by epoxy-polyester powder paints. Brackets and nuts of fastening to the mast, stud and earthing nut are zinc-coated.
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