Directive Systems & Engineering DSE3-50 Manual

The Directive Systems DSE3-50 is a 3 element Yagi-Uda antenna that provides optimum
performance for a 6-foot boom-length antenna, while addressing construction details of importance to
the first-time, as well as the experienced, builder. Design issues such as selecting the grade of
aluminum used for boom and element material to assure harsh-environment survivability, use of
stainless-steel boom hardware and element-assembly hardware, and use of commonly available
hand tools to aid in ease of construction, have been considered in producing an antenna kit which is
complete, satisfying to build, and gives the builder one of the finest 6-meter antennas available.
CAUTION: While we strive to remove all burrs from all machined parts, there is always the possibility of
sharp edges. We strongly suggest checking the edges and use a fine file, or 400 grit
sandpaper, to remove any burrs that may have been left.
DSE3-50 Rev 6/20
Directive Systems & Engineering
2702 Rodgers Terrace
Haymarket, VA 20169-1628
www.directivesystems.com
3-ELEMENT 50-MHZ YAGI, DSE3-50

INTRODUCTION

ELECTRICAL SPECIFICATIONS

Calculated gain:
SWR 1.5:1 Bandwidth:
SWR 50.1 MHz
F/B ratio:
Impedance:
Maximum Power:

MECHANICAL SPECIFICATIONS

Length:
Turning radius:
Boom-sections/elements
Element sections:
T-match arms:
All stainless steel hardware.
Surface area:
Wind survival:
Maximum mast size:
Coax connector:
Assembled weight:
703-754-3876
8 dBi
2 MHz
Less than1.3:1 typical
>20 dB
50 ohms nominal
1000 Watts
6 feet
~96 inches
6063-T832 aluminum
1.375" x .058" wall
5/8" & ½" x .058" wall
3/8" x .058" wall
~1.5 square feet
90+ mph
2.0" OD – larger on Special orders
Weatherproof N–type
7.5 lbs