Directive Systems & Engineering DSEFO144-12 Скачать руководство пользователя страница 10

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P a g e

DSEFO144-12 Rev 8/19

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.

This will complete the assembly of your DSEFO144-12. The construction of this

antenna will provide many years of consistent performance with no degradation of
performance due to corrosion and weathering.

TABLE 1.

Lengths are +/- 2mm

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.

Содержание DSEFO144-12

Страница 1: ...nt to back ratio dB 23 SWR Typical at resonance 1 2 1 Beamwidth degrees E Plane 34 H Plane 37 Sidelobe level decibels E Plane 19 H Plane 16 Power rating Continuous Watts 1000 Stacking Distance ft m E...

Страница 2: ...parts there is always the possibility of sharp edges We strongly suggest checking the edges and use a fine file or 400 grit sandpaper to remove any burrs that may have been left Tools needed 2 Phillip...

Страница 3: ...ements needed for assembly Take time to inventory each one and check off each dimension with Table 1 Some elements vary by 1 or 2mm in overall length so extreme care in measuring is called for here Ar...

Страница 4: ...ngths one last time before final installation on the boom 6 The driven element is next Refer to the drawing in Figure 4 and the photos in Figure 5 for guidance The driven element slides through the bo...

Страница 5: ...P a g e 5 DSEFO144 12 Rev 8 19 FIGURE 4...

Страница 6: ...P a g e 6 DSEFO144 12 Rev 8 19...

Страница 7: ...ase be sure that you build each antenna with the same T match wire orientation In the above drawing the center pin goes to the right hand side of the antenna as viewed from the back of the connector M...

Страница 8: ...then the center conductor of the balun another 6 internal tooth lock washer the lug from the N connector another 6 internal tooth lock washer the T arm and screw into the insulator 8 Place a 8 interna...

Страница 9: ...e adjust the shorting bars for minimum SWR Always keep the shorting bars th same distance from the ends of the driven element Generally good wattmeters can reliably indicate SWR down to about 1 2 1 A...

Страница 10: ...e 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 w...