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DSE1327LYRM Rev 10/20

Directive Systems & Engineering

2702 Rodgers Terrace

Haymarket, VA 20169-1628

www.directivesystems.com

703-754-3876

13cm Loop Yagi (Rear Mount), Model DSE1327LYRM

SPECIFICATIONS

Frequency range: 2.3 to 2.4 GHz Gain: ≅18.5 dBi

Number of elements: 27 3 dB Beamwidth

Boom length: 48 inches (E plane): ≅20º

Boom diameter: 0.5 inches F/B ratio: ≥20 dB

Mast diameter: 1 1/2 in. max Maximum Power: 400 W average

Weight: (assembled) 1pound assembled Stacking distance: 15 in. vertical (H)

Connector: Type-N female 16 in. horizontal (E)

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 the antenna and locate the hardware package. The boom is in one piece and

requires no assembly. Observe that the boom to mast bracket is installed on the rear of the

boom.

P a g e | 2

DSE1327LYRM Rev 10/20

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) Insert U-Bolt into rear mount bracket. Note that the bracket can be installed for either

vertical or horizontal polarization. (See drawings below)

(Can be up or down) (Can be left or right)

4) Attach the feed line, and tape it to the mast. The connector should be sealed with electronic

grade RTV or equivalent.

5) The antenna SWR has been adjusted at the factory for less than 1.5:1. 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. NOTE: Do not attempt this adjustment unless the

proper equipment and qualified personnel are available.

6) If antennas are to be stacked, see "Instructions for Stacking Loop Yagis".

DO NOT, UNDER ANY CIRCUMSTANCES, APPLY ANY TYPE OF SEALANT OR COATING TO THE

DRIVEN ELEMENT, T-ARMS OR CONNECTOR ASSEMBLY, OTHER THAN KRYLON®

CLEAR COAT. ANY OTHER COATING WILL ADVERSELY AFFECT THE SWR AND VOID YOUR

WARRANTY.

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 the defective part, free of

charge, to the original purchaser. 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.