Directive Systems & Engineering DSE3347LYA Manual

Frequency range:
Number of elements:
Boom length:
Boom diameter:
Mast diameter:
Weight: (assembled)
Connector:
1) 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 re install the two loops
and retighten the 4-40 hardware. A1/4" nut driver is required for this.
2) Locate the two 53" sub boom pieces, and note that the rear 53" section has six holes, and
the front section has only four. Check Figure 1 for the correct assembly layout, and lay out the
parts in order. Note that the clamshell brackets have alignment marks to assure proper assembly.
3) At this time assemble the two piece 3/4" sub boom using the supplied 1 1/4" hardware and
clamshell brackets, and do not tighten just yet. Attach the two 3" x 4" sub boom plates (small ones,
with no u-bolt holes) to the sub boom ends, and the short BM brackets on the main boom at
D13&33, using the 8-32 X 1 1/4" screws provided. Do not make them tight yet. Position the 3.5" x
4" boom to mast plate with u-bolt holes, at D21 and the large BM Bracket. Fasten the plate with
DSE3347LYA Rev 12/13
Directive Systems & Engineering
2702 Rodgers Terrace
Haymarket, VA 20169‐1628
www.directivesystems.com
703‐754‐3876
915 MHz Loop Yagi, Model DSE3347LYA
SPECIFICATIONS
910-930 MHz
47
216 inches
1 inch
2 inch max
13 pounds
Type N female
PARTS LIST
Quantity Description
3 boom sections
1 hardware package
2 sub-boom splice shells 6 ¾" x 1"
2 sub-boom sections 53" x ¾" square
1 boom to mast plate for 2" U-bolts
2 sub‐boom plates 3" x 4"
2 2" U-bolts with hardware & saddles
ASSEMBLY INSTRUCTIONS
Gain:
3 dB Beamwidth
(E plane):
F/B ratio:
Maximum Power:
Stacking distance:
20.5 dBi
14.4º
20 dB
550 W average
38 inches vertical
41 inches horizontal