DSE3347LYA Rev 4/21
Directive Systems & Engineering
2702 Rodgers Terrace
Haymarket, VA 20169-1628
www.directivesystems.com
703-754-3876
33cm Loop Yagi, Model DSE3347LYA (w/sub-boom)
SPECIFICATIONS
Frequency range:
910-930 MHz
Gain:
20.5 dBi
Number of elements:
47
3 dB Beamwidth
Boom length:
216 inches
(E plane):
14.4º
Boom diameter:
1 inch
F/B ratio:
>
20 dB
Mast diameter:
2 inch max
Maximum Power:
550 W average
Weight: (assembled)
13 pounds
Stacking distance: 38 inches
’ vertical
Connector: Type N female
41 in
ches’ horizontal
Note: All hardware is Stainless Steel unless otherwise noted.
Anti-Seize Compound
- Apply a small amount of the supplied Anti-Seize Compound to the aluminum joints and
to the threads of the U-Bolts to prevent galling.
BEFORE INSTALLING YOUR NEW ANTENNA, PLEASE BE SURE
TO READ THE ENCLOSED WARNING PAMPHLET.
ASSEMBLY INSTRUCTIONS
1)
Unpack antenna and locate the two preassembled antenna sections and the hardware
package.
The antenna is shipped in three boom sections. There are alignment marks to assure
proper assembly. The mid boom has a long rectangular bracket attached. This is the midpoint of
the antenna at D21. The front and rear sections have shorter 3-3/4" brackets attached at D13 &
D33. Assemble the three sections together so that the alignment marks match. You will have to
remove D17 & D31 and insert the boom sections into one another, then reinstall the two loops and
retighten the 4-40 hardware. A1/4" nut driver is required for this.
2)
Straighten any misaligned elements and tighten hardware if necessary.
But do not
touch R1, DE or D1, as these have been factory set for minimum SWR.
3)
Attach the boom to mast plate to the boom with the hardware provided. Install the U-bolts
so that the mast comes up directly under the boom. Note that the bracket can be installed for
either vertical or horizontal polarization. (See drawings below)
