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            BROADBAND DIPOLE ANTENNA FOR SHORTWAVE RADIO BROADCASTING

            GENERAL DESCRIPTION


            The broadband dipole antenna provides excellent performance for short to medium range circuits.

            The antenna radiation pattern has a high take-off angle at the lower frequencies for short range communication circuits and a lower take-off angles at the higher frequencies for medium range communication circuits. At the lower operating frequencies, the azimuthal pattern is essentially omni-directional. At the higher frequencies, the azimuthal pattern approaches that of a dipole.

            The broadband dipole antenna does not require tuning, thus eliminating the need for any form of antenna tuning unit with its associated losses. No terminating resistors are employed and so full power is available for radiation.

            The broadband feature is ideal for multi-channel or frequency agile synthesized HF radio equipment.

            The antenna comprises two horizontal conical sections, the elements of which are connected in the centre to a common feed line. The antenna is mounted between two guyed support masts.
            broadband dipole antenna


            TYPICAL RADIATION PATTERNS
            Azimuth pattern Elevation pattern
            typical azimuth pattern broadband dipole antenna typical elevation pattern broadband dipole antenna


            TYPICAL COVERAGE MAP
            typical coverage map broadband dipole antenna


            TECHNICAL SPECIFICATIONS
            ELECTRICAL
            Azimuth pattern omnidirectional
            Frequency ranges 2-30 / 4-30 / 6-30 MHz
            Gain 5-8 dBi
            Input impedance 50 ohm unbalanced
            Polarization horizontal
            Power ratings 1 / 2.5 / 5 / 10 / 20 kW average
            Specifications may change without notice

            THIS TYPE OF ANTENNA IS AVAILABLE FROM
            Manufacturer Type number Power Level
            ASC Signal 1765 L M
            3065 L

            Antenna Products Corporation BDP-230/430 L M
            RFS Radio Frequency Systems BDH Series L M
            TCI Model 613 L M
            Transradio SenderSysteme Berlin ADP 0526

            H
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