DSE3-50 Rev 6/20
Directive Systems & Engineering
2702 Rodgers Terrace
Haymarket, VA 20169-1628
www.directivesystems.com
703-754-3876
3-ELEMENT 50-MHZ YAGI, DSE3-50
INTRODUCTION
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.
ELECTRICAL SPECIFICATIONS
Calculated gain:
8 dBi
SWR 1.5:1 Bandwidth:
2 MHz
SWR 50.1 MHz
Less than1.3:1 typical
F/B ratio:
>20 dB
Impedance:
50 ohms nominal
Maximum Power:
1000 Watts
MECHANICAL SPECIFICATIONS
Length:
6 feet
Turning radius:
~96 inches
Boom-sections/elements
6063-T832 aluminum
1.375" x .058" wall
Element sections:
5/8" & ½" x .058" wall
T-match arms:
3/8" x .058" wall
All stainless steel hardware.
Surface area:
~1.5 square feet
Wind survival:
90+ mph
Maximum mast size:
2.0" OD
– larger on Special orders
Coax connector:
Weatherproof N
–type
Assembled weight:
7.5 lbs
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.
