ETS-Lindgren 3121D Dipole User Manual
Page 8
8
| Introduction
The elements for baluns can be
extended to dipole lengths above and
below the specified frequency of each
particular balun. The elements should be
used with the specified balun and should
not be adjusted to frequencies beyond
the specified range of each balun. This is
to prevent errors in calibration of the
antenna receiving system.
3121D DB-4
A variety of mounting options are available for the Model 3121D. For information,
see Mounting Instructions on page 21.
Tripod Options
ETS-Lindgren offers the following nonmetallic, non-reflective tripods for use at
both indoor and outdoor EMC test sites.
• Model 4-TR—Constructed of linen
phenolic and delrin, designed with an
adjustable center post for precise
height adjustments. Maximum height
is 2.0 m (80.0 in), and minimum height
is 94 cm (37.0 in). This tripod can
support up to an 11.8 kg (26.0 lb)
load.