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            ROTATABLE LOG-PERIODIC ANTENNA FOR SHORTWAVE RADIO BROADCASTING

            GENERAL DESCRIPTION


            The rotatable log-periodic antenna is a broadband horizontally polarized antenna, designed for medium and long range communications.

            Thanks to a rotator, any desired direction can be chosen.

            The radiation pattern is generally consistent over the entire frequency range of the antenna, however the pattern can be tailored to suit requirements.

            The radiating structure consists of a series of dipoles, mounted on a horizontal boom. The dipoles are fed along the center of the structure.

            The supporting structure of the antenna can either be a self-supporting tower or a guyed mast.
            rotatable log-periodic antenna


            TYPICAL RADIATION PATTERNS
            Azimuth pattern Elevation pattern
            typical azimuth pattern rotatable log-periodic antenna typical elevation pattern rotatable log-periodic antenna


            TYPICAL COVERAGE MAP
            typical coverage map rotatable log-periodic antenna


            TECHNICAL SPECIFICATIONS
            ELECTRICAL
            Azimuth pattern directional
            Frequency ranges 2-30 / 4-30 / 6-30 MHz
            Gain 5-13 dBi
            Input impedance 50 ohm unbalanced or 300 ohm balanced
            Polarization horizontal
            Power ratings 1 / 5 / 10 / 25 / 50 / 100 kW average
            Specifications may change without notice

            THIS TYPE OF ANTENNA IS AVAILABLE FROM
            Manufacturer Type number Power Level
            ASC Signal 2731/2004 L M
            Antenna Products Corporation LPH-1 L M
            LPH-9/30/24
            M
            LPH-27
            M
            LPH-89
            M
            RFS Radio Frequency Systems HLO Series
            M
            TCI Model 521 L M H
            Transradio SenderSysteme Berlin AHL 0421

            H
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