ETS-Lindgren 2175 Antenna Tower - Manual (Page 7)

Introduction | 7
1.0 Introduction
The ETS-Lindgren Model 2175 MiniMast™ is a portable, electric-powered mast
and platform system designed to be used with the Model 2090 Multi-Device
Controller (or next generation ETS-Lindgren controller, if applicable) for EMI
compliance testing. The MiniMast is designed for antenna scanning from 1 meter
to 4 meters. The mast, carrier, platform, lifting rope, and guying system are
non-conductive and non-magnetic. The mast section is constructed of square
fiberglass tubing for strength, rigidity, and “weatherability”.
The MiniMast may also be manufactured in custom mast heights. Contact your
local sales representative for additional information regarding custom height.
The MiniMast features an offset boom that maintains a constant rotational axis
along the centerline when the antenna is rotated from horizontal to vertical
polarization. A cable guide at the back end of the boom feeds the coaxial cable to
the antenna while maintaining the appropriate bending radius.
The air polarization feature allows for remote polarization of the antenna using
the controller or the infrared remote control.
For antennas with a stinger mount, the offset boom can be removed. The
antenna stinger is then clamped into the mounting block using the hand knob.