Page 21 - LWEXEX SCADA TELEMETRY

B Y 7 0 -3G W

2-element Yagi Antenna for the 380-470 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 BASE STATION ANTENNAS
accurate matching. The entire balun unit is completely sealed in a polyamide (�A) screw cap 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 380-470 MHz
Band width 40 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 0.5 m
Weight 3.1 kg
Mounting 27-50 mm mast tube
Material epoxy-coated aluminum
Wind Load 150 km/h

ORDERING DESIGNATIONS
Type Frequency
BY70-3G/l 380-420 MHz
BY70-3G/m 405-445 MHz
BY70-3G/h 430-470 MHz

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

+30° +60° +90° +60° +30° +150° +120° 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
380 BY70-3G/ 420
405 BY70-3G/m 445
430 BY70-3G/h 470
-30° -60° -90° -60° -30° 240° 210° 180° 150° 120° freq. MHz