Directive Systems & Engineering DSEH12-27 Manuale utente

DSEH12-27 Rev 4/21

Directive Systems & Engineering

2702 Rodgers Terrace

Haymarket, VA 20169-1628

www.directivesystems.com

703-754-3876

2200-2500 MHz Circular Polarized Antenna, Model DSEH12-27

SPECIFICATIONS

Frequency range: 2200 to 2500 MHz Gain: 18.1 dBic

Polarization : RHCP (Circular) STD. 3 dB Beamwidth

Number of turns: 27 (Circular): 20º

Helix length: 34 inches F/B ratio: ≥16 dB

Mast diameter: 2 in. max Maximum Power: 100 W average

Weight: 5 pounds

Connector: Type-N female

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 U-bolt /Hardware package.

2) Install the U-bolts (2) on the 8" x 8" back mounting plate using the saddles, 5/16" hex-

nuts and split washers provided. (See drawing above.)

3) Attach the antenna to your support mast. The antenna is Right hand circular, and does

not require any specific orientation for maximum reception other than to point it in the correct

P a g e | 2

DSEH12-27 Rev 4/21

direction. Tighten the U-bolts to your mast, using the 5/16” hardware supplied. Take care not

to crush your support mast.

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. There are no

adjustments to be made to the antenna. Maximum radiation is in the direction of the long axis

of the antenna and away from the rear plate.

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.

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