Directive Systems & Engineering DSE3318LYBRM User manual

DSE3318LYBRM Rev 4/14
Directive Systems & Engineering
2702 Rodgers Terrace
Haymarket, VA 20169-1628
www.directivesystems.com
703-754-3876
Cellular Loop Yagi (Rear Mount), Model DSE3318LYBRM
SPECIFICATIONS
Frequency Range: 826-896 MHz
Number of elements: 18
Boom Length: 726 inches
Boom diameter: 1 inch
Mast diameter: 1 1/2 inch max.
Weight: 5 lbs (8 lbs shipping)
Connector: Type N female
Gain: 18.5 dBi
3 dB Beamwidth (E Plane): 28°
F/B ratio: >20 dB
Maximum Power: 550 W. average
Stacking Distance:
H Plane 18 inches vertical
E Plane 21 in. horizontal
The DSE3318LYBRM has been designed to
produce very high gain from 826 to 896
MHz and will find many uses in improving
performance in marginal areas. Special
care has been given to produce an
antenna that combines extremely high
forward gain with no compromise in
antenna pattern.

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DSE3318LYBRM Rev 4/14
ASSEMBLY INSTRUCTIONS
1) Unpack antenna and locate the hardware package. Remove Director 9, Connect the two
boom pieces together at alignment marks. Re-install D9 and tighten 4-40 nut to secure boom
pieces together.
2) Install the 2" U-bolt in the angle bracket that is attached to the boom.
3) Attach the feed line. Tape feedline to antenna boom on opposite side from loops! The
connector should be sealed with electronic grade RTV or equivalent. Seal the area where the
.141" semi rigid coaxial cable extends into the rear of the antenna connector.
4) Straighten any misaligned elements and tighten hardware if necessary.
5) The antenna SWR has been adjusted at the factory for less than 1.3:1.
6) If antennas are to be stacked, see "Instructions for Stacking Loop Yagis".
Directive Systems Warranty Policy
All Directive Systems antennas are built with the finest materials available. We take great pride in building a
quality product that will give years of good service and performance. If there is a defect in materials or
workmanship within 90 days of purchase, Directive Systems will repair or replace, free of charge, the
defective part. DO NOT RETURN ANYTHING WITHOUT PRIOR AUTHORIZATION FROM DIRECTIVE
SYSTEMS. Please contact us either by phone or email describing the problem and we will work to resolve it.
If, after examining a new antenna you received, you are not satisfied, contact us immediately for return
authorization and refund. 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.