Related Manuals for CUSHCRAFT Big Thunder Series
Summary of Contents for CUSHCRAFT Big Thunder Series
- Page 1 ASSEMBLY & INSTALLATION 20-15-10 Meter Nine Element Beam COMMUNICATIONS ANTENNAS 951471 (9/98)
- Page 2 Thank you for your purchase of the Cushcraft X9 Tribander. 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. Cushcraft operates a full service Technical Support staff to answer questions regarding assembly, tuning, parts and just about everything else.
- Page 3 Verification of Parts continued Part No. Description Metric Equivalent Quantity 014387 #8-32 Stainless Steel Lock Nut ..........____ 014399 1/4”...
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Page 4: Boom Assembly
Figure 1 84” 72” 54” 66” 84” (213.4 cm) (182 cm) (137 cm) (167 cm) (213 cm) 3-3/4” 1-1/4” 33” 20” 1-1/4” 4-3/4” 1-1/4” 4-3/4” 1-1/4” 3-3/4” (9.5 cm) (3.2 cm) (84 cm) (51 cm) (3.2 cm) (12 cm) (3.2 cm) (12 cm) (3.2 cm) (9.5 cm) - Page 5 Tighten LAST Tighten Figure 4A SECOND Tighten FIRST Figure 4B Leave out until Step #9 Figure 4C Figure 4D Leave loose for Step 5...
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Page 6: Element Assembly
IMPORTANT 3-Element Assembly Unless indicated otherwise, telescope elements 4” (10.16 cm) and tighten 1/4” the worm clamp. 4” (.63 cm) Figures 5, 5A, 5B, and 5C show the steps for element assembly. (10.16 cm) Identify the tubing sections required for each element using the Element Subassembly Parts List. - Page 7 Tube (2.2 x 122 cm) that each 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 E79EJ Aluminum 3/8”...
- Page 8 Figure 6 Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Figure 6D Figure 6A Mark Center Line of element using element half lengths. 1-1/4” Cush-A-Clamp Figure 6B Figure 6E 1-1/4” Cush-A-Clamp 1” Cush-A-Clamp Figure 6C Figure 6F 7/8” Cush-A-Clamp 7/8”...
- Page 9 Element Element Element Element 1/2” (1.3 cm) Mast mounting location for reference Figure 7 5-Feed System Assembly Part # Description Dimensions 014387 SS Lock #8-32 The feed system consists of 3 sub-assemblies. They are the feed-straps, the tuning tube insulator and the matching network. Figure 7 illustrates the 3 pairs of feed-straps (FL1, FL2, FL3).
- Page 10 Figure 7B Figure 7A Part # Description Dimensions 010082 1/4-20 x 1” Bolt (.6-20 x 2.5 cm) Refer to Figure 7A and attach the tuning tube insulator to the 010084 SS Lock 1/4” boom bracket. Use the hardware listed in the Tuning Tube Insulator Washer (.6 cm) Subassembly Parts List.
- Page 11 Figure 8 Boom Shelf Figure 8A 3209 3209 Part # Description Dimensions 35 170035 Aluminum 2-1/2” V-Block (6.3 cm) 82 010082 1/4-20 x 1” Bolt (2.5 cm) 6-Boom to Mast Clamp Assembly 84 010084 SS Lock 1/4” Washer (0.6 cm) The X9 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 12: Specifications
The X9 does not require tuning. The broadband VSWR characteristics of the log cell can not be improved by adjusting element lengths. Varying the element dimensions from those suggested in this manual is not recommended. For help with tuning, please contact Cushcraft technical support.
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