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Related Manuals for Directive Systems & Engineering DSEFO144-15
Summary of Contents for Directive Systems & Engineering DSEFO144-15
- Page 1 Directive Systems & Engineering 2702 Rodgers Terrace Haymarket, VA 20169-1628 www.directivesystems.com 703-754-3876 15 Element 144 MHz K1FO Designed Yagi, Model DSEFO144-15 ELECTRICAL SPECIFICATIONS MECHANICAL SPECIFICATIONS DSEFO144-15 Rev 2/21...
- Page 2 While we strive to remove all burrs from all machined 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. DSEFO144-15 Rev 2/21...
- Page 3 See pictures below for keeper orientation. The front side, with the tabs going inward, is the side to push onto the element. The rear side, with the tabs going outward, is the side that faces you. It is the side that goes face down into the element tool. DSEFO144-15 Rev 2/21...
- Page 4 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. DSEFO144-15 Rev 2/21...
- Page 5 Place the T-arm support bracket on next, then the connector L bracket (connector facing forward!). Next place a #8 internal tooth lock washer and a nut and tighten. Install 3/8” plastic plug in the driven element access hole. Note: In the following pictures, some may be a representation. DSEFO144-15 Rev 2/21...
- Page 6 P a g e FIGURE 4. DSEFO144-15 Rev 2/21...
- Page 7 P a g e DSEFO144-15 Rev 2/21...
- Page 8 P a g e FIGURES 5. DSEFO144-15 Rev 2/21...
- Page 9 SWR. Install supplied 1 1/8” plastic caps on ends of boom. 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: DSEFO144-15 Rev 2/21...
- Page 10 Attach the end of the boom sag to the boom sag bracket using a 10-32 X 1” screw and nylon lock nut. Do not over tighten. Snug the hose clamp slightly over the slits to hold it in place. DSEFO144-15 Rev 2/21...
- Page 11 As a general rule, the slower drying sprays tend to be more enduring. Rustoleum "Clear Seal" or Krylon clear spray are recommended. A few light coats work better than one big one. DSEFO144-15 Rev 2/21...
- Page 12 CLEAR COAT. ANY OTHER COATING WILL ADVERSELY AFFECT THE SWR AND VOID YOUR WARRANTY. This will complete the assembly of your DSEFO144-15. The construction of this antenna will provide many years of consistent performance with no degradation of performance due to corrosion and weathering.
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