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  • 300-346 MHz
    Vertical antennas A4 ALT

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    300-346 MHz  Vertical antennas A4 ALT

    Electrical specifications

    Model A4 ALT (L) A4 ALT (H)
    Operating frequency band, MHz 297-310 335-346
    VSWR, not more than 1.5
    Gain, dBi 8 9
    Sector in vertical plane , -3dB 24В° 20В°
    Impedance, Ohm 50
    Max. power input, W 200
    Lightning protection yes
    Adjustable no need

    Mechanical specifications

    Model A4 ALT (L) A4 ALT (H)
    Weight, kg not more 5
    Height/Length, mm 4120
    Mast diametr, mm 50-110
    Radome fiberglass
    Rated wind velocity, m/s 40
    Wind loading area, m2 0.246
    Load of side wind 40 m/s, H 180
    Temperature range, В°C from -50 to +50
    Connector N-female, (7/16 DIN-optional)

    Antenna A4 ALT represents collinear construction with four active components, providing perfect circular pattern at high gain (9 dB) and wide operating frequency band.
    Radioparent weather-proof radome is made on the basis of fiberglass material. Radome has polished fiberglass coating, which protects from ultraviolet radiation and icing.
    Antenna has DC grounding and has no need in additional tuning.
    There were designed two antennas for use as transmitting and receiving antennas in MPT 1327 communication systems: A4 ALT(L), with 305 MHz center and A4 ALT(H) with 340 MHz center.

    A4 ALT(L, H) E-plane pattern

    VSWR diagram, A4 ALT(L)

    VSWR diagram, A4 ALT(H)

    The information provided on this page is not an official offer.
    To verify actual parameters contact the sales department before ordering.