Related Manuals for CUSHCRAFT BIG THUNDER XM520
Summary of Contents for CUSHCRAFT BIG THUNDER XM520
- Page 1 ASSEMBLY & INSTALLATION XM520 20 METER 5 ELEMENT YAGI COMMUNICATIONS ANTENNAS 951484 (11 /98)
- Page 2 XM520 Thank you for your purchase of the Cushcraft XM520 . This antenna is designed and manufactured to give the best performance and trouble free service. The antenna will perform as specified if the instructions are followed during assembly and installation.
- Page 3 XM520 Part No. Description Metric Equivalent Quantity Qty Check 010011 #8-32 Stainless Steel Nut ........... ____ 010082 1/4-20 x 1"...
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Page 4: Boom Assembly
3-3/4” 1-1/4” 1-1/4” 12-3/4” 1-1/4” (9.5 cm) (3.2 cm) (3.2 cm) Figure 1A (32.4 cm) (3.2 cm) INSERT INSERT 12” 60” 84” 84” 84” (30.5 cm) (152.4 cm) (213.4 cm) (213.4 cm) (213.4 cm) 1-1/4” 3-3/4” 1-1/4” 1-1/4” 16-3/4” (3.2 cm) (9.5 cm) (3.2 cm) (3.2 cm) - Page 5 XM520 Figure 1D Tighten LAST Tighten SECOND Tighten FIRST Leave out until Step #6 Figure 1E Part # Description Dimensions Part # Description Dimensions 82 010082 1/4-20 x 1” 509 324509 Aluminum 4” x 5-1/4 x 3/16” Bolt (.6 x 2.5 cm) Bracket (10.2 x 13.3 x .5 cm) 84 010084...
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Page 6: Element Assembly
XM520 2 - Element Assembly Figures 2A and 2B show the steps required for element assembly. For elements 2 and 3 slide EB sections over fiberglass insulator (566) until #8 screw holes line up (Figure 2B) . Insert screws (120) through holes and secure with lock washer (41) and nut (11). Pay close attention to all dimensions shown. - Page 7 XM520 Part # Description Dimensions Element Assembly Continued 010011 SS Nut #8-32 011941 SS Lock Washer 050077 Black 3/8’ Plastic Cap (0.9 cm) 010120 SS Machine #8-32 x 2” Screw (5.1 cm) 030407 Worm 5/8” Clamp (1.6 cm) 030409 Worm 11/16”...
- Page 8 XM520 1” (2.5 cm) Coax Drip Loop X79FS X79FS Figure 3B Form Drip Loops with feed straps. Part # Description Dimensions 81 032881 Worm 2-1/6”-3” Clamp (5.2-7.6 cm) 82 010082 SS Hex 1/4-20 x 1” Bolt (.6 x 2.5 cm) 84 010084 SS Lock 1/4”...
- Page 9 XM520 Element Element Element Element Element Figure 4A Mast mounting location for reference Figure 4B Figure 4C Part # Description Dimensions 010082 1/4-20 x 1” Bolt (2.5 cm) 010084 SS Lock 1/4” Washer (.6 cm) 010085 SS Nut 1/4”-20 (.6 cm) 014399 SS Lock 1/4”-20...
- Page 10 Boom Shelf Figure 5B 3209 3209 Figure 5A Part # Description Dimensions 35 170035 Aluminum 3-1/2” V-Block (8.9 cm) 82 010082 1/4-20 x 1” Bolt (2.5 cm) 5-Boom to Mast Clamp Assembly 84 010084 SS Lock 1/4” Washer (0.6 cm) The XM520 boom-to-mast clamp is designed to be mounted on the tower/mast so the built in boom shelf feature can be utilized.
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Page 11: Safety Loop
XM520 6 - Boom Truss Assembly Figure 6 illustrates the boom truss assembly. Refer to the boom truss assembly parts list for the hardware required. The XM520 uses Phillystran® cable to guy the boom. The cable is one continuous piece from one boom end to the other. -
Page 12: Specifications
Cushcraft antenna is free of defects in material or workmanship. If, in the judgement of Cushcraft, any such antenna is defective, then Cushcraft will, at its option, repair or replace the antenna at its expense within thirty days of the date the antenna is returned (at purchaser's expense) to Cushcraft or one of its authorized representatives.
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