300-350 MHz Directional antennas Y3 ALT, Y3 ALT M : IK-Telecom
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300-350 MHz
Directional antennas Y3 ALT, Y3 ALT M


Y3 ALT

Y3 ALT(M)
Electrical specifications
Model Y3 ALT Y3 ALT M
Operating frequency band, MHz 300-350 290-350
VSWR, not more than 1.5
Gain, dBi 7.65 6
Sector, -3dB
in vertical plane 88° 70°
in horizontal plane 106° 140°
Polarization vertical
Impedance, Ohm 50
Max. power input, W 200
Mechanical specifications
Model Y3 ALT Y3 ALT M
Weight, kg 0.85 1.3
Size, mm 620x520x30 800x500x130
Construction material Aluminium alloy
Mast diametr, mm 25-55 38-65
Rated wind velocity, m/s 45
Wind loading area, m2 0.04 0.039
Load of side wind 45 m/s, H 48
Rated wind velocity with 0.5" icing, m/s 28
Temperature range, °C -50 to +50
Connector N-female

Rushing for antenna Y5 ALT has led us to development of new, more technologically advanced and inexpensive three-component Yagi antenna Y3 ALT construction. Among other advantages of this antenna possibility of operation at greatly separated frequencies (36 MHz), high gain, all-welded construction, providing mechanical strength, reliable polymeric coating, protecting from hostile environment and icing can be considered. All these make antenna Y3 ALT very popular for telemetry and radiotelephony systems 300-350 MHz frequency range.
We have developed a new model of three-element wave channel with loop vibrator and symmetrical feeding system - Y3 ALT M. The antenna is implemented in more strong variant if compared with Y3 ALT. The mechanical strength of this new antenna is ensured by the welded construction and cast silumin legs that allow fixing antenna on the mast of diameter 38-65 mm. The demountable vibrator improves the protection against the weather impact. It is recommended to use this antenna in systems of MPT 1327, telemetry and the river fleet communications.



Y3 ALT E-plane pattern

Y3 ALT H-plane pattern

VSWR diagram, Y3 ALT

VSWR diagram, Y3 ALT M


Finland, Pulsa