Page 12 - LWEXEX SCADA TELEMETRY
P. 12

BASE STATION ANTENNAS  TY - D3G w
                  3


            2-element Yagi Antenna for the 300-350 MHz Band with 3 dBd Gain


            This is a 2-element Yagi antenna with 3 dBd �ain. This Yagi incorporates baluns optimized for wide bandwidth
            and accurate matching. The entire balun unit and feeder cable inlet are completely sealed in a polyethylene (�ET)
            moulding  ensuring  permanent  waterproof  connections.  The  antenna  is  terminated  with  N  (female)  connector.
            Radiating elements, supporting booms and adjoining metal castings are constructed in high-quality-aluminum
            alloys to prevent corrosion. All metal parts are DC-grounded. A mast clamp is provided for mounting on 27-50 mm
            diameter mast tube.



                                                                    specifications
                                                                       Type                YAGI
                                                                      ELECTRICAL
                                                                       Frequency Range     300-350 MHz
                                                                       Band width          15 MHz
                                                                       SWR                 < 1.5
                                                                       Gain                3 dBd (5.15 dBi)
                                                                       Impedance           50 Ω
                                                                       Max Power           150 W
                                                                       Polarization        Vertical; Horizontal
                                                                       Front to back ratio  12 dB
                                                                       Antistatic protection  DC-grounded (Connector
                                                                                           shows a DC-short)
                                                                       Connector           N (female)
                                                                      MECHANICAL
                                                                       Length              0.6 m
                                                                       Weight              3.0 kg
                                                                       Mounting            27-50 mm mast tube
                                                                       Material            aluminum
                                                                       Wind Load           150 km/h

                                                                      ORDERING DESIGNATIONS
                                                                       Type                Frequency
                                                                       AC3-D3G/l           300-315 MHz
                                                                       AC3-D3G/ml          312-327 MHz
                                                                       AC3-D3G/mh          325-340 MHz
                                                                       AC3-D3G/h           337-350 MHz

            RADIATION PATTERN (E-PLANE)        RADIATION PATTERN (H-PLANE)         TYPICAL SWR CURVE

              +30°   +60°  +90°  +60°  +30°      +300°  +330°  0°   30°    60°       2.0

                                                                                    SWR  1.5
              +3  0  -3  -6 -9  -9 -6 -3  0  +3  +3  0  -3  -6 -9  -9 -6 -3  0  +3
             0°                            0°   270°                          90°    1.0
                                                                                       300        AC3-D3G/l     315
                                                                                       312       AC3-D3G/ml     327
                                                                                       325       AC3-D3G/mh     340
                                                                                       337        AC3-D3G/h     350
               -30°  -60°  -90°  -60°   -30°      240°  210°  180°  150°   120°                        freq. MHz
   7   8   9   10   11   12   13   14   15   16   17