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    37-50 MHz
    Mobile duplexers MDF-6LB

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    37-0 MHz  Mobile duplexers MDF-6LB
    Electrical specifications
    Model MDF-6LB(M) MDF-6LB(H)
    Operating Frequency band, MHz 37-44 42.5-50
    Insertion loss (adjustable) not more, dB 1.5
    Frequency separation TX/RX (min), MHz 3
    Impedance, Ohm 50
    Isolation, not less, dB 90
    VSWR, not more than 1,5
    Input power, not more, W not more than 150
    Temperature Range, °C from -30 to +50
    Mechanical specifications
    Model MDF-6LB(M) MDF-6LB(H)
    Weight, kg 5.8 5.5
    Connector N-female
    Length/Width/Depth, mm 415x315x60 385x315x60


    For the operation of repeaters in low-frequency range VHF we have developed and launched the manufacturing of a duplexer on the spiral resonators. Two model of duplexers are being produced: MDF-6LB(M) - for the range 37-44 MHz and MDF-6LB(H) - for the upper range 42,5-50 MHz. With the separation of 3-4-MHz they provide a fully-duplex mode of operation of mobile radio stations at minimum losses and standard output power 150 Wt. This construction is significantly less in sizes than the fully-sized duplexer made on the basis of of the volume resonators. The duplexer MDF-6LB is recommended to be used jointly with our new antenna GPW-1LB.

    Typical MDF-6LB(M) duplexer response curves

    MDF-6LB(M)


    MDF-6LB(H)


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