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3-ELEMENT 50-MHZ YAGI REAR MOUNT, DSE3-50LVA
The Directive Systems DSE3-50LVA is a rear mount 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. A vertical stack of four or eight makes a great fixed array.
BEFORE INSTALLING YOUR NEW ANTENNA, PLEASE BE SURE
DSE3-50LVA Rev 10/20
Directive Systems & Engineering
2702 Rodgers Terrace
Haymarket, VA 20169-1628
www.directivesystems.com
INTRODUCTION
ELECTRICAL SPECIFICATIONS
Calculated gain:
SWR 1.5:1 Bandwidth:
SWR 50.1 MHz
F/B ratio:
Impedance:
Maximum Power:
Optimal stacking distance
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:
TO READ THE ENCLOSED WARNING PAMPHLET.
703-754-3876
10.2 dBi
2 MHz
Less than1.3:1 typical
>20 dB
50 ohms nominal
1000 Watts
10 feet (1/2 wl)
90 inches
N/A
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
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Summary of Contents for Directive Systems & Engineering DSE3-50LVA
- Page 1 3-ELEMENT 50-MHZ YAGI REAR MOUNT, DSE3-50LVA INTRODUCTION The Directive Systems DSE3-50LVA is a rear mount 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...
- Page 2 Elements will be called out by their position on the boom, R = reflector, DE = driven element and D- element number = director. The director’s number is relative to the DE element with D-1 nearest the DE. The elements are marked R, DE and D. DSE3-50LVA Rev 10/20...
- Page 3 Apply a small amount of anti- seize to the 24” extension and slide it 6” inside the slotted end of the main boom and secure with the hose clamp. DSE3-50LVA Rev 10/20...
- Page 4 4. The Driven Element (DE) mounts the same way; however, the connector bracket sits between the element and the element to boom saddle (see Figure 2). 5. Similarly, assemble the Director (D) and attach it at the appropriate mark on the boom, making sure the element is perpendicular to the Reflector. DSE3-50LVA Rev 10/20...
- Page 5 ¼” Locknut Driven element Element Saddle bracket Boom Front 1/4" X 1 1/2" X 3" U-BOLT Figure 2 8. Securely attach the balun to the boom with the supplied cable ties as pictured in Figure 3. Figure 3 DSE3-50LVA Rev 10/20...
- Page 6 ANY ANTENNA THAT HAS BEEN MODIFIED WILL BE SUBJECT TO A RESTOCKING CHARGE. IF AN ANTENNA IS SO MODIFIED AS TO MAKE IT UNUSABLE, DIRECTIVE SYSTEMS RESERVES THE RIGHT TO REFUSE TO ACCEPT THE ANTENNA FOR RETURN. DSE3-50LVA Rev 10/20...
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