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V290iA User Guide
37
B
Antennas
Technical
Specifications
This appendix lists the technical specifications of the two optional UHF antennas.
Shrouded Yagi Antenna
Following are the specifications for the 4RF0054-A model of the 746 -777 MHz
shrouded Yagi antenna.
Yagi Electrical and Mechanical Specifications
Parameter
Specification
Frequency range
746-777 MHz
Input Impedance
50 Ohms
Return Loss
>15 dB
Front to Back Ratio
20 dB
Maximum Input Power
250 Watts
Polarization
Vertical & Horizontal
Forward Gain
11.5dBd
3 dB Beamwidth
E Plane 37º, H Plane 41º
Connection N
socket
Radiator
ptfe Printed Circuit
Elements Aluminium
Alloy
Radiator Feed
Sucoform 141
Antenna Base
Sandcast Aluminium Alloy Grade LM25
Radome
Fire retardant Polyurethane Moulding
Fasteners
Stainless Steel Grade A2-70
Lightning protection
Direct Grounded
Mounting Brackets
Hot Dip Galvanized Steel to suit 38 - 60mm. dia.