Directive Systems & Engineering DSE3318LYDRM Assembly Instructions

958 MHz Loop Yagi (Rear Mount), Model DSE3318LYDRM
Unpack antenna and locate the hardware package. Boom is broken between directors 8
1)
& 9. Remove D8 and slide boom pieces together to alignment marks. Replace D8.
2) Insert the U-bolt in the Rear-Mount Bracket. The Bracket can be oriented for horizontal or
vertical polarization. (See above figures.).
3) Attach the feed line, and tape it to the mast. The connector should be sealed with electronic
grade RTV or equivalent. Don't forget to 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. Additional tweaking
can be accomplished by adjusting the distance between the driven element and R1 and D1, or by
adjusting the shape of the driven element.
DSE3318LYDRM Rev 4/14
Directive Systems & Engineering
2702 Rodgers Terrace
Haymarket, VA 20169-1628
www.directivesystems.com
703-754-3876
Frequency Range:
Number of elements:
Boom Length:
Boom diameter:
Mast diameter:
Weight:
Connector:
Gain:
3 dB Beamwidth (E Plane):
F/B ratio:
Maximum Power:
Stacking Distance:
ASSEMBLY INSTRUCTIONS
SPECIFICATIONS
H Plane
E Plane
930-990 MHz
18
72 inches
1 inch
2 inch max.
4 lbs (assembled)
Type N female
16.5 dBi
=28°
>20 dB
550 W. average
21 ½ in. vertical
24 in. horizontal