ETS-Lindgren BiConiLog 3142D, User Manual

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Mounting Instructions
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21
5.0 Mounting Instructions
Before connecting any components, follow the
safety information in the ETS-Lindgren
Product Information Bulletin included with your
shipment.
The Model 3142D is a precision measurement
device. Handle with care.
Contact with any metal or non-metallic structure can capacitively load the
antenna, which may cause unrepeatable results. Therefore, make sure that no
part of the dipole elements or bow ties is in contact with the tripod or tower,
particularly in vertically-polarized tests. Where possible, run the feed cable
straight one meter or more back from the Model 3142D BiConiLog™ Antenna
before dropping vertically.
Both horizontal and vertical polarization is easily accomplished when the
Model 3142D with the optional end plates is mounted onto a tower, but vertical
polarization on a tripod requires special consideration. Because immunity power
requirements are many dB lower for vertical polarization, the optional end plates
can be removed when mounting vertically on a standard tripod. A special tripod is
available from ETS-Lindgren for vertical polarization with optional end plates
intact. Please contact ETS-Lindgren for the recommended mounting scheme.