SteppIR DB36 Assembly Manual
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SteppIR DB36 Assembly Manual

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DB36 Yagi
Assembly Manual
This assembly manual is intended to be
COLOR
printed in full
. If the manual is
printed in
black and
white, many im-
portant details could be lost.
REV 10.5c
06/05/2014
Page
2112 116th Ave NE #1-5, Bellevue, WA 98004 l Tel: 425.453.1910 l email: sales@steppir.com
Tech Support: www.steppir.com/support  Tel: 425.891.6134  support@steppir.com

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Summary of Contents for SteppIR DB36

  • Page 1 . If the manual is printed in black and white, many im- portant details could be lost. REV 10.5c 06/05/2014 Page 2112 116th Ave NE #1-5, Bellevue, WA 98004 l Tel: 425.453.1910 l email: sales@steppir.com Tech Support: www.steppir.com/support  Tel: 425.891.6134  support@steppir.com...
  • Page 2 80m option—24 conductor Frequency DB36 Gain, dBi DB36 Front to rear, dB 80M* (optional) 1.35 9.27 21.5 9.88 26.5 10.21 27.1 10.43 21.1 10.65 11.0 1.78 6M w/passive opt. 12.75 27.4 Page 2 Tech Support: www.steppir.com/support  Tel: 425.891.6134  support@steppir.com...

  • Page 3: Table Of Contents

    DB36 TABLE OF CONTENTS (page 1 of 4) Page(s) PREAMBLE 2—18 A note from Mike Mertel, K7IR What now? Advice from Jim Streible K4DLI 7—8 Parts check list 9—10 Bill of materials (BOM) - Individual kits 11—15 A word about stainless steel galling...
  • Page 4 DB36 TABLE OF CONTENTS (page 2 of 4) Page(s) CHAPTER FOUR 40—42 SECTION 4.0 Reflector EHU overview drawing Return tube assembly—Reflector SECTION 4.1 Mounting the Reflector EHU onto the boom CHAPTER FIVE 43—44 SECTION 5.0 Director 1 EHU overview drawing...
  • Page 5 DB36 TABLE OF CONTENTS (page 3 of 4) Page(s) CHAPTER TEN 62—65 SECTION 10.0 Prepare the telescoping poles for the loop and non-loop elements 62—63 SECTION 10.1 Attach the sweep couplers to the sweep tubes, mount the fiberglass spreaders 64—65 SECTION 10.2...
  • Page 6 SteppIR to be a commercially feasible product. The current and future SteppIR products should produce the most potent single tower antenna systems ever seen in Amateur Radio! We thank you for using our SteppIR antenna for your ham radio endeavors.

  • Page 7: Preamble

    3. Do a complete inventory of every part, nut and bolt. Yes it takes time, but it also allows you to noti- fy SteppIR if anything is missing and allow time to get it to you before you start assembly of the antenna.
  • Page 8 OK - - - NOW WHAT? (continued) (Sage advise from Jim Streible, K4DLI—SteppIR Technical Support Guru) 6. When you have finished working with the controller be sure the display indicates “Elements Home” and the controller has been turned OFF. When the controller is connected to the antenna and the controller is turned back on the next time, it will immediately tune to whatever position the con- troller was left in last time you were using it, so you want to be sure that position is HOME.

  • Page 9: Parts Check List

    70-6010-01 25 pin dSub splice assembly ANTENNA COMPONENTS  QTY PART NUMBER DESCRIPTION 10-1610-23 11.5” x 11.5” x 0.25” Mast Plate 70-2030-11 EHU mounting plate with aligning gasket 10-1608-01 Return Plate 10-1605-11 Driven Element Plate Page 9 Tech Support: www.steppir.com/support  Tel: 425.891.6134  support@steppir.com...

  • Page 10: Parts Check List

    OPTION: 36” Truss support for end element truss kit 72-1002 OPTION: DB 36 6m Hardware Kit 10-1001-91 OPTION: Tubing kit for optional 6m passive element kit OPTION: 80M Dipole kit Page 10 Tech Support: www.steppir.com/support  Tel: 425.891.6134  support@steppir.com...
  • Page 11 60-0115 5/16” x 4-1/2” SS Bolt 60-0046 5/16” SS Nylock Nut 60-0033 5/16” SS Washer 60-0145 3/8” x 4-1/2” SS Eyebolt 60-0034 3/8” SS Washer 60-0050 3/8” SS Nylock Nut Page 11 Tech Support: www.steppir.com/support  Tel: 425.891.6134  support@steppir.com...
  • Page 12 PREAMBLE DB36 HARDWARE BOX BILL OF MATERIALS (continued) (PN 72-0100)  PART NUMBER DESCRIPTION 60-0142 7/16” x 5” SS Bolt, Full Thread 60-0143 7/16” SS Nylock Nut 60-0160 7/16” SS Lock Washer 60-0161 7/16” SS Standard Nut 60-0144 7/16” Galvanized Washer 60-0157 1/8”...
  • Page 13 PREAMBLE DB36 MISC. PARTS BOX BILL OF MATERIALS (PN 72-0104)  PART NUMBER DESCRIPTION 72-0009-03 Glue Kit 70-1007-01 Foam Plug Assembly 09-0007 Blue Silicone Tape 09-1025 Conical Grinding Stone 11/16” 09-0001 Electrical Tape 10-1028-21 Anti-seize Stick 10-1029-01 Connector Protector 10-1509-02...
  • Page 14 75 FT 1/8” DACRON ROPE 60-0014 6-32 NYLOCK NUT 60-0014-01 6-32 x 7/8” PAN HEAD SCREW 60-0158 1/8” THIMBLE 60-0157 1/8” WIRE CLAMP 10-1028-01 ANTI SEIZE PACKET 09-0001 ELECTRICAL TAPE 60-0112 SET SCREW Page 14 Tech Support: www.steppir.com/support  Tel: 425.891.6134  support@steppir.com...
  • Page 15 CABLE CLIP WITH ADHESIVE BACK 60-0112 10-32 X 1/4” SET SCREW With 80m dipole option customer needs end element truss kits 10-1054-02 36” Element Truss Supports 72-0018-31 39' Element Truss Kit Page 15 Tech Support: www.steppir.com/support  Tel: 425.891.6134  support@steppir.com...

  • Page 16: A Word About Stainless Steel Galling

    You can be assured that the stainless steel fasteners we provide with our products are manufactured of very high quality. Page 16 Tech Support: www.steppir.com/support  Tel: 425.891.6134  support@steppir.com...

  • Page 17: Assembly Notes

    Be sure to refer to the DB36 configuration drawing on the following page so that you can fully under- stand how the antenna operates. In addition, the configuration drawing identifies EHU placement, which is important as you progress in your installation of the antenna.

  • Page 18: Preamble

    PREAMBLE DB 36 ELEMENT CONFIGURATION GUIDE REVERSE DIRECTION (180 deg) MAST PLATE BOOM FORWARD DIRECTION (Normal) Page 18 Tech Support: www.steppir.com/support  Tel: 425.891.6134  support@steppir.com...

  • Page 19: Boom Assembly

    QTY 2: 60-0030 QTY 2: 60-0030 QTY 2: 60-0030 QTY 2: 60-0030 1/4” Nylock nut 1/4” Nylock nut QTY 4: 60-0030 1/4” Nylock nut 1/4” Nylock nut 1/4” Nylock nut Page 19 Tech Support: www.steppir.com/support  Tel: 425.891.6134  support@steppir.com...

  • Page 20: Chapter One

    When securing the EZ-Eyebolt to the boom, five 3/8” flat washers (PN 60-0034) are used as a spacer as shown in figure 1.03. Figure 1.03 Top of boom QTY 1: 60-0151 3/8”x4-1/2” QTY 5: 60-0034 Stainless Eyebolt 3/8” Flat washer QTY 1: 60-0050 3/8” Nylock nut Page 20 Tech Support: www.steppir.com/support  Tel: 425.891.6134  support@steppir.com...

  • Page 21: Boom Assembly

    SECTION 1.0 BOOM REINFORCING SLEEVE The DB36 utilizes a boom reinforcing sleeve, located at the junction point where the 2-1/4” boom sec- tions mate with the 2-1/2” boom section. This action effectively doubles the wall thickness at this criti- cal location.

  • Page 22: Chapter Two

    (EHU’s) for the DB36 Yagi. In addition, the optional 6m passive elements are shown along with the mounting brackets for the boom truss. Refer to the following page for actual placement measurements.
  • Page 23 2. Wire the EHU’s and secure them to the element mounting plates (don’t forget the gasket!). The mount- ing plate itself acts as the lid for the DB36 EHU’s, with the exception of the 49 ft Driven element. 3. Measure your center-to-center lengths, level the mounting plates and firmly tighten.
  • Page 24 ELEMENT HOUSING UNIT (EHU) WIRING OVERVIEW Figure 2.10 gives an overview of the inside of a SteppIR EHU. Wiring of each EHU will be covered in detail on the following pages. NEVER ATTEMPT ANY WIRING WHILE THE ELECTRONIC CONTROLLER IS CONNECTED TO THE CONTROL CABLE.

  • Page 25: Ehu Wiring

    The yellow circle shows the correct wiring sequence. FIG. 2.11 FIG. 2.12 FIG. 2.13 FIG. 2.14 4 Pin Header Wiring Sequence BLACK GREEN WHITE TERMINAL FIG. 2.15 PLUG TERMINAL HEADER Page 25 Tech Support: www.steppir.com/support  Tel: 425.891.6134  support@steppir.com...

  • Page 26: Chapter Two

    Repeat wiring and coax seal preparation for each EHU. When finished, the EHU’s will be secured to the aluminum element mounting plates. This is covered in detail in the next chapter. FIG. 2.16 FIG. 2.18 FIG. 2.17 FIG. 2.19 FIG. 2.20 Page 26 Tech Support: www.steppir.com/support  Tel: 425.891.6134  support@steppir.com...

  • Page 27: Chapter Three

    2” X 12” Stress relief tube (insert on OD of fiberglass EST) 10-1605-11 Element mounting plate 70-2029-01 1-3/4” X 60-3/4” EST tube 10-1601-32 2-1/4” Aluminum saddle half 70-2028-01 1-3/4” x 66-3/8” EST tube Page 27 Tech Support: www.steppir.com/support  Tel: 425.891.6134  support@steppir.com...
  • Page 28 The DB36 Driven loop element is 49 feet in length. The other two loop elements (REF& DIR 2) on the DB36 are 39 feet in length. There is a reason for this— by having the middle loop element 49 feet, it electrically makes the two end elements perform as if they are 49 feet in length too.
  • Page 29 FIG. 3.04 FIG. 3.03 FIG. 3.05 REFLECTOR DIRECTOR FIG. 3.06 FIG. 3.08 FIG. 3.07 FIG. 3.09 Page 29 Tech Support: www.steppir.com/support  Tel: 425.891.6134  support@steppir.com...

  • Page 30: Section 3.1

    5/16” x 3-3/4” Hex head bolt 10-1613-11 1/4” Aluminum spacer 60-0046 5/16” Nylock nut 10-1601-22 2” Aluminum saddle half 10-1601-11 2” x 3” Stress relief tube 70-2029-01 1-3/4” x 60-3/4” EST tube Page 30 Tech Support: www.steppir.com/support  Tel: 425.891.6134  support@steppir.com...

  • Page 31: Section 3.1

    All of the SteppIR EHU’s have a “diverter” inside them to direct each half of the copper-beryllium strip in the correct direction. The Driven element on the DB36 is quite a bit longer than the normal loops, so a different diverter system must be employed. This is the reason why the Driven element has 3/4”...
  • Page 32 EST’s ready for the EHU to be mounted. FIG. 3.22 FIG. 3.20 FIG. 3.23 FIG. 3.21 FIG. 3.27 FIG. 3.26 FIG. 3.25 FIG. 3.24 FLUSH w/ END CENTERED ON SADDLE Page 32 Tech Support: www.steppir.com/support  Tel: 425.891.6134  support@steppir.com...

  • Page 33: Secure The Driven Element Ehu To The Mounting Plate

    60-0018 #10 Flat washer 10-1502-12 EHU gasket 10-1501-23 EHU lid w/drain hole 60-0017 #10 x 3/4” machine screw 60-0017-10 #10 x 3/4” Flat head screw 70-3403-01 Driven EHU FIG. 3.30 Page 33 Tech Support: www.steppir.com/support  Tel: 425.891.6134  support@steppir.com...
  • Page 34 ON THE MOUNTNG PLATE FIG. 3.35 Key QTY Part # Description 60-0101 #10 x 3/4” Machine screw with locking strip on threads (see PIC XX) 60-0018 #10 Flat washer 10-1613-11 1/4” Aluminum spacer Page 34 Tech Support: www.steppir.com/support  Tel: 425.891.6134  support@steppir.com...

  • Page 35: Installing The Cpvc Inner Guide Tubes

    INSTALLING THE CPVC INNER GUIDE TUBES All of the looped elements have inner guide tubes. The DB36 Driven element utilizes a different method for attaching the inner guide tubes than the two 39 foot end loops due to it’s extra length.
  • Page 36 CPVC inner guide tubes will extend when glued together. This is why we recommend you wait until much later in the process to complete the guide tube assembly. FIG. 3.46 FIG. 3.47 FIG. 3.48 FIG. 3.49 FIG. 3.50 Page 36 Tech Support: www.steppir.com/support  Tel: 425.891.6134  support@steppir.com...
  • Page 37 5/16” x 3-1/2” Hex head bolt 60-0046 5/16” Nylock nut 10-1601-22 2” Aluminum saddle half 10-1630-21 2” x 12” Stress relief sleeve 70-2028-01 1-3/4” x 66-3/8” EST return tube 10-1608-01 Element return plate Page 37 Tech Support: www.steppir.com/support  Tel: 425.891.6134  support@steppir.com...
  • Page 38 Do not forget to use anti-seize on all stainless steel fasteners, and also remem- ber to install a set screw into each saddle pair (one set screw per saddle pair). FIG. 3.52 FIG. 3.53 FIG. 3.54 FIG. 3.57 FIG. 3.55 FIG. 3.56 Page 38 Tech Support: www.steppir.com/support  Tel: 425.891.6134  support@steppir.com...

  • Page 39: Chapter Three

    3.64. This will stabilize the boom as you continue with construction of the antenna. FIG. 3.59 FIG. 3.61 FIG. 3.60 FIG. 3.58 FIG. 3.63 FIG. 3.62 FIG. 3.64 Page 39 Tech Support: www.steppir.com/support  Tel: 425.891.6134  support@steppir.com...

  • Page 40: Chapter Four

    WARNING! 10-1608-01 Element return plate Extra bracket used in 10-1015-11 EST Return tube this section if installing the 80m dipole. Refer to the 80m dipole instruc- tions for further detail. Page 40 Tech Support: www.steppir.com/support  Tel: 425.891.6134  support@steppir.com...

  • Page 41: Return Tube Assembly—Reflector

    (one set screw per saddle pair). FIG. 4.03 FIG. 4.01 FIG. 4.02 FIG. 4.06 FIG. 4.04 FIG. 4.05 Page 41 Tech Support: www.steppir.com/support  Tel: 425.891.6134  support@steppir.com...

  • Page 42: Chapter Four

    EHU housing. Measure the proper distance from the center-point of the return tube to the center-point of the element (30.0 (A tip from Adam Blackmer K7EDX, SteppIR operations manager— use the inches) as shown in figure 4.15.

  • Page 43: Chapter Five

    #10 Nylock nut 60-0114 5/16”x 3-3/4” Hex head bolt C (x10) 60-0046 5/16” Nylock nut 70-3420-01 Director 1 EHU 10-1502-12 Element housing gasket 70-2030-11 Element mounting plate 10-1601-32 2-1/4” Aluminum saddle half Page 43 Tech Support: www.steppir.com/support  Tel: 425.891.6134  support@steppir.com...

  • Page 44: Chapter Five

    EHU housing. Measure the proper distance (93.25 inches) from the center-point of the Driven element to the center-point (A tip from Adam Blackmer K7EDX, SteppIR operations manager— use the mold of the Director 1 element.

  • Page 45: Director 2 Ehu Overview Drawing

    80m dipole. Refer to 10-1601-22 1-3/4” Aluminum saddle half the 80m dipole instruc- 10-1608-01 Element return plate tions for further detail. 10-1015-11 EST Return tube Page 45 Tech Support: www.steppir.com/support  Tel: 425.891.6134  support@steppir.com...

  • Page 46: Chapter Six

    EHU to the Director 2 EHU (171.75 inches). Level the EHU as shown in figure 6.09 and tighten the alumi- num saddles firmly. FIG. 6.02 FIG. 6.03 FIG. 6.04 FIG. 6.05 FIG. 6.06 FIG. 6.08 FIG. 6.09 FIG. 6.07 Page 46 Tech Support: www.steppir.com/support  Tel: 425.891.6134  support@steppir.com...

  • Page 47: Chapter Six

    Figure 6.18 shows the completed Director 2 EHU and return assembly. FIG. 6.10 FIG. 6.13 FIG. 6.11 FIG. 6.12 FIG. 6.15 FIG. 6.17 FIG. 6.14 FIG. 6.16 FIG. 6.18 Page 47 Tech Support: www.steppir.com/support  Tel: 425.891.6134  support@steppir.com...

  • Page 48: Chapter Seven

    The DB36 employs a special system, called the EZ-Eye, for both mounting and leveling the boom. The EZ- Eye is also used in preventing the boom from shifting during high winds.

  • Page 49: Attach The Mast Plate To The Boom

    Thread the second 7/16” standard nut onto the bolt until there is approximately 3/4” of clearance be- tween the two standard nuts as shown in figure 7.06. FIG. 7.02 FIG. 7.03 FIG. 7.04 FIG. 7.05 FIG. 7.06 Page 49 Tech Support: www.steppir.com/support  Tel: 425.891.6134  support@steppir.com...

  • Page 50: Chapter Seven

    Figure 7.16 shows the completed mast plate as- sembly. FIG. 7.07 FIG. 7.08 FIG. 7.09 FIG. 7.12 FIG. 7.11 FIG. 7.10 FIG. 7.15 FIG. 7.14 FIG. 7.13 FIG. 7.16 Page 50 Tech Support: www.steppir.com/support  Tel: 425.891.6134  support@steppir.com...

  • Page 51: Chapter Eight

    Part # Description FIG. 8.05 10-1618-41 48” Boom truss mast 60-0066 5/16” x 4” Hex head bolt 10-1601-01 1-3/4” Aluminum saddle half 10-1613-11 1/4” aluminum spacer 60-0046 5/16” Nylock nut Page 51 Tech Support: www.steppir.com/support  Tel: 425.891.6134  support@steppir.com...

  • Page 52: Phillystran Truss

    60-0045 3/16” Wire rope clip 10-1607-11 Truss attachment plate 60-0159 5/16” Stainless turnbuckle 60-0044 Phillystran end cap 30 FT 21-8002 Phillystran 2100I (trim as you go) 60-0048 3/16” Wire thimble Page 52 Tech Support: www.steppir.com/support  Tel: 425.891.6134  support@steppir.com...

  • Page 53: Phillystran Truss

    Phillystran to the boom truss mast. FIG. 8.13 FIG. 8.12 FIG. 8.14 FIG. 8.15 FIG. 8.16 FIG. 8.17 FIG. 8.18 FIG. 8.19 FIG. 8.20 Page 53 Tech Support: www.steppir.com/support  Tel: 425.891.6134  support@steppir.com...

  • Page 54: Chapter Eight

    8.27. FIG. 8.20 FIG. 8.23 FIG. 8.21 FIG. 8.22 FIG. 8.24 FIG. 8.25 FIG. 8.27 FIG. 8.26 Page 54 Tech Support: www.steppir.com/support  Tel: 425.891.6134  support@steppir.com...

  • Page 55: Chapter Nine

    9.04. The hinged cover needs to open from the bottom, as shown in figure 9.05. Figure 9.06 shows the connector junction box mounted on the mast plate. FIG. 9.01 FIG. 9.02 FIG. 9.03 FIG. 9.04 FIG. 9.05 FIG. 9.06 Page 55 Tech Support: www.steppir.com/support  Tel: 425.891.6134  support@steppir.com...

  • Page 56: Wiring The Connector Junction Box

    4 wire control cable; the green and red wire need to be trimmed (optional) and taped; Black goes to pin 1, pin 2 and 3 are not used, white goes to pin 3, shield goes to shield (S); Page 56 Tech Support: www.steppir.com/support  Tel: 425.891.6134  support@steppir.com...
  • Page 57 W I R E C U T O U T S OPTIONAL 4 wire control cable key 80M Dipole (J6) SHIELD  WHITE  NOT USED  NOT USED  BLACK  Page 57 Tech Support: www.steppir.com/support  Tel: 425.891.6134  support@steppir.com...

  • Page 58: Wiring The Connector Junction Box

     WHITE with ORANGE STRIPE  NOT USED  NOT USED  NOT USED  NOT USED  NOT USED  NOT USED   NOT USED  NOT USED Page 58 Tech Support: www.steppir.com/support  Tel: 425.891.6134  support@steppir.com...
  • Page 59 AT FACTORY  Be sure to trim the red and green wire on each end of the control cable and tape over  it to avoid potential electrical shorts. Page 59 Tech Support: www.steppir.com/support  Tel: 425.891.6134  support@steppir.com...
  • Page 60 CONNECTING CONTROL CABLE TO DB25 SPLICE The DB25 control cable splice allows for much more convenient connection of control cable to the SteppIR controller. By utilizing this connector splice, there is no need to cut the DB25 connector off and re-solder when running cable through conduit.

  • Page 61: Chapter Nine

    WIRING THE CONNECTOR JUNCTION BOX (continued) SECTION 9.2 CONNECTING CONTROL CABLE TO dSUB SPLICE 25 PIN DSUB 16 WIRE CONTROL CABLE—DB36 NO 80m option FIG. 9.27 FIELD SPLICE (If you have the 8om dipole option, refer to the separate manual)

  • Page 62: Chapter Ten

    Each line needs to change in color to ensure even adhesion temperatures . FIG. 10.01 TRIM THE TIP OF EACH POLE FOR AN OVERALL LENGTH OF 212.75 INCHES FIG. 10.03 FIG. 10.02 FIG. 10.04 FIG. 10.06 FIG. 10.05 FIG. 10.07 Page 62 Tech Support: www.steppir.com/support  Tel: 425.891.6134  support@steppir.com...
  • Page 63 Be sure there is no overlap of the grip tape – it should be fine from the factory but the OD of poles var- ies slightly, so if there is overlap, make sure you trim the tape so there is a gap, as shown in figure 10.08, Step FIG. 10.08 Page 63 Tech Support: www.steppir.com/support  Tel: 425.891.6134  support@steppir.com...
  • Page 64 These screws will be completely tightened later, tightening to this point provides a framework for the ensuing steps. FIG. 10.10 FIG. 10.11 Figure 1.07 FIG. 10.12 0.25” GAP Page 64 Tech Support: www.steppir.com/support  Tel: 425.891.6134  support@steppir.com...

  • Page 65: Chapter Ten

    Tighten the Nylock nuts firmly. Be sure to use anti-seize on these screws or they very likely will gall and have to be replaced. Repeat the above steps for the remaining sweeps. Figure 10.16 shows a completed sweep assembly. FIG. 10.14 FIG. 10.15 FIG. 10.13 FIG. 10.16 Page 65 Tech Support: www.steppir.com/support  Tel: 425.891.6134  support@steppir.com...
  • Page 66 When completely tightened, the sweep couplers should touch or almost touch. Similar to figure 10.23. Figure 6.16 shows a completed sweep. Repeat the same steps for the remaining sweeps. FIG. 10.21 FIG. 10.22 FIG. 10.20 FIG. 10.23 FIG. 10.24 FIG. 10.25 Page 66 Tech Support: www.steppir.com/support  Tel: 425.891.6134  support@steppir.com...

  • Page 67: Chapter Eleven

    GLUE GLUE ends of the 39-7/8” pipe FIG. 11.03 FIG. 11.04 FIG. 11.02 3/4” FIG. 11.06 FIG. 11.07 FIG. 11.05 Page 67 Tech Support: www.steppir.com/support  Tel: 425.891.6134  support@steppir.com...

  • Page 68: Section 11.1

    Quick disconnect boot locking ring (these are molded into the base section of each telescoping pole and are used to keep the pole from sliding out of the quick disconnect boots in high wind situations) Page 68 Tech Support: www.steppir.com/support  Tel: 425.891.6134  support@steppir.com...

  • Page 69: Chapter Eleven

    Figure 11.11 shows how the plug is in place for shipping purposes. Each end of the DB36 boom has a 40/30 loop for use on 40m as well as the 49 ft loop Driven element, for a total of three elements on 40m/30m .

  • Page 70: Chapter Twelve

    “droop” at the element ends. This droop has no impact whatsoever on performance, but some people do not care for the look. On the DB36 Yagi, it is more pronounced because the Director element is a straight telescoping pole, which droops less than the 40/30 loop elements on either side of it.

  • Page 71: Attach The Truss Couplers

    Dacron rope is secured to the truss line as shown in figure 12.18. FIG. 12.12 FIG. 12.10 FIG. 12.11 FIG. 12.13 FIG. 12.14 FIG. 12.15 Dacron Rope FIG. 12.18 FIG. 12.17 FIG. 12.16 Page 71 Tech Support: www.steppir.com/support  Tel: 425.891.6134  support@steppir.com...

  • Page 72: Routing The Dacron Truss Cord

    “stacked” one on top of the other as shown in figure 12.25. Tighten the wire clips firmly. FIG. 12.20 FIG. 12.22 FIG. 12.21 FIG. 12.23 FIG. 12.25 FIG. 12.24 Page 72 Tech Support: www.steppir.com/support  Tel: 425.891.6134  support@steppir.com...

  • Page 73: Chapter Twelve

    When the position of the loops are as desired, tighten the quick disconnect boots firmly. Wait 30 minutes and tighten again. FIG. 12.26 FIG. 12.27 FIG. 12.28 FIG. 12.29 FIG. 12.31 FIG. 12.30 Page 73 Tech Support: www.steppir.com/support  Tel: 425.891.6134  support@steppir.com...

  • Page 74: Chapter Thirteen

    6M PASSIVE ELEMENT KIT While the DB36 has a 4 element 6m Yagi that is standard, the spacing is a bit wide so gain is compromised and there is reduced front-to-rear. For the average 6m user, this configuration works just fine, with gain of 4.0 dBi and front-to-rear of 1.78 dB.

  • Page 75: Chapter Thirteen

    Be sure to use anti-seize on the stain- FIG. 13.05 Reflector Driven Director 1 Director 6m passive 6m passive 2 EHU (59.75 in) (27.25 in) FIG. 13.08 FIG. 13.07 FIG. 13.06 Page 75 Tech Support: www.steppir.com/support  Tel: 425.891.6134  support@steppir.com...

  • Page 76: Chapter Fourteen

    SECURE THE CABLES ONTO THE BOOM When the antenna assembly is completed, the last step before attaching the DB36 Yagi to the tower mast is the securing of cable and coax to the boom. Note that in many cases, the taping of the control cable may be the last step, done after the antenna is mounted on the tower.

  • Page 77: Mount The Db36 Onto The Tower Mast

    With this in mind, the mast plate is set up on the DB36 so that the mating process from mast plate to tower mast is made as easy as possible.

  • Page 78: Chapter Fourteen

    11. Check to be sure that the elements are level with the boom— a level antenna looks much better when suspended in the air than one that is not! 12. Get the DB36 Yagi on that tower so you can work some good DX! Page 78...

  • Page 79: Chapter Fifteen

    Whenever you suspect a problem the very first thing that should be done is a calibrate. It is always a good idea to calibrate the antenna if you are having trouble. It is best to set the DB36 to 20M be- fore doing the calibrate function.

  • Page 80: Chapter Fifteen

    Again, be careful NOT to short the pins. Even if the controller is turned off, there is always voltage going to the pins with a SteppIR controller. We do this to “lock” the step- per motors, and minimize the need to calibrate the antenna on a regular basis.
  • Page 81 SteppIR will pay for standard shipping back to the buyer. The manufacturer assumes no further liability beyond repair or replace- ment of the product.

  • Page 82: Steppir Contact Information

    SteppIR Contact Information Email : New orders or questions about your current order: sales@steppir.com Existing customers requiring technical or product support services: support@steppir.com Information and questions about our products: sales@steppir.com Phone / Fax: Phone: 425-453-1910—9:30am to 4:30pm Pacific Standard Time Fax : 425-462-4415 Tech Support: 425-891-6134—10:00am to 5:00pm Eastern Standard Time...
  • Page 83 Page 83 Tech Support: www.steppir.com/support  Tel: 425.891.6134  support@steppir.com...
  • Page 84 Page 84 2112 116th Ave NE #1-5, Bellevue, WA 98004  Tel: 425.453.1910  email: sales@steppir.com Tech Support: www.steppir.com/support  Tel: 425.891.6134  support@steppir.com...

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