Directive Systems & Engineering DSEFO146-12 Скачать руководство пользователя страница 12

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DSEFO146-12 Rev 10/20 

 

 
  FIGURE 6.

 

 

 
Before moving on to the following step, apply a small amount of the supplied Anti-Seize 
Compound to the threads of the U-Bolts to prevent galling:

 

 
11) 

Attach the boom to mast plate to the boom midway between elements D-5 and D-6. 

Use the ¼” U-bolts with flat washers, lock washers and nuts. The antenna will be front heavy 
at this point but the weight of the feedline, when attached, will cause it to be balanced. If using 
multiple antennas in an array, be certain all mounting plates are at the same location. When 
attaching the antenna to your mast, use the 5/16” U-Bolts, flat washers, lock washers and 
nuts. 

Once you have the U-bolts installed and the antenna mounted on your support mast and 

tightened, you can route your feedline along the mast and over to the driven element and 
connector. Dress the coax against the antenna boom and tighten the connector. Seal the 
connector body with several layers of good grade vinyl tape. Then apply a layer of butyl rubber 
antenna sealer or RTV over the tape. This will provide a good vapor barrier and ensure years 
of trouble free performance. The insulated design will make for a very long-lived antenna that 
will stand up well in harsh environments.

 

Содержание DSEFO146-12

Страница 1: ...ront 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 Plane 11 7 3 53 H Plane 10 8 3 25 MECHANICAL SPECIFICATIONS Boom length ft m 17 4 5 28 Turning radius in m 10 4 3 15 Weight Assembled Lbs kg 9 5 4 32 Max mast size in cm 2 5 08 Wind surface area Ft ...

Страница 2: ...lation tool supplied with kit ruler with metric millimeter markings marking pencil Hardware Bag Boom to Mast Hardware T arm Shorting Bars 2 1 4 x 1 3 4 U bolts 2 8 32 x 1 1 4 Machine screw 4 1 4 Nuts 4 8 32 x 1 3 4 Machine screw 3 1 4 Split Lock washers 4 8 Internal Tooth Lock washers 2 1 4 Flat washers 4 8 Split Lock washers 6 5 16 x 2 U bolts 2 8 Nuts 8 5 16 Nuts 4 6 32 x 1 2 Machine screw 2 5 1...

Страница 3: ...he front boom section as you did the rear 3 The element bundle contains all of the elements 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 Arrange elements in order of descending size and mark each element with a scribe for proper location of the keeper Se...

Страница 4: ...Some extra keepers are supplied but care is definitely required here Check your work as you go Proceed with the next element in similar fashion Check off each element on Table 1 to monitor your progress Double check element lengths 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 ele...

Страница 5: ...P a g e 5 DSEFO146 12 Rev 10 20 FIGURE 4 ...

Страница 6: ...P a g e 6 DSEFO146 12 Rev 10 20 ...

Страница 7: ...lease 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 Make sure both antennas do the same Proper phase relationship is very important here ...

Страница 8: ...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 internal tooth lock washer on the screw securing the driven element and the T arm support bracket then the two ground lugs from the balun then another 8 internal tooth lock washer and nut Tighten securely 9 Last pass 8 32 X 1 screws ...

Страница 9: ...P a g e 9 DSEFO146 12 Rev 10 20 170mm ...

Страница 10: ...P a g e 10 DSEFO146 12 Rev 10 20 180mm ...

Страница 11: ...gth off the ground The SWR will get better the higher you put the antenna 10 Using the supplied cable ties secure the balun to the boom exactly as shown in Figure 6 and route so they do not touch any of the elements this will ensure minimum SWR Install supplied 1 1 8 plastic caps on ends of boom ...

Страница 12: ... plates are at the same location When attaching the antenna to your mast use the 5 16 U Bolts flat washers lock washers and nuts Once you have the U bolts installed and the antenna mounted on your support mast and tightened you can route your feedline along the mast and over to the driven element and connector Dress the coax against the antenna boom and tighten the connector Seal the connector bod...

Страница 13: ... coax 1 2 wave is ideal The antenna impedance will repeat each half wave from the antenna regardless of coax imperfections between the coax connector and your bridge or wattmeter If you utilize your 144 MHz transmitter as an RF source apply power observe the reflected power Turn off the power and adjust the T Match bars equally in small increments 1 8 or 3 mm is a good starting point Apply power a...

Страница 14: ...r 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 MOD...

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