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TELEX, TELEX COMMUNICATIONS, INC. 9600 ALDRICH AVE. SO. MINNEAPOLIS. MN 55420 INSTRUCTION ORDER NO. 410 MANUAL General This antenna is a five-element, Citizens Band beam with a forward gain of 12.3 dB Description and a front-to-back ratio of 31 dB. A Beta Match system matches it to a 50-ohm feed line and puts the Driven Element at DC ground for noise-free operation and lightning protection.
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Unpack the antenna and check the parts against the Parts List. Compare the Step-by-Step parts with the illustrations. Assembly Attach the cast aluminum brackets (Item No.8) to the mast using the 5/16" bolts (Item No. 38). To further insure the attachment to the mast, drill a hole in 5/16"...
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SUO> OC~'~I"_OL_E 1_1 \ _R_EF_LE_C_TO_R _E_ND I_" _ol-c::;;:__ . 13 BETA MATCH SCR_E_W_H_O~_~_~ ~_H_O~_E1S~\~ ---, o,-a--~/_"-I:-:d:-:~~O _\_~£-b Item Description Tubing, drilled, 2" x 75" TUbing, swaged, drilled, 2" x 75" Tubing, swaged, 2" x 75" Figure 2 Element Attachment Select the largest set of boom-to-element brackets (Item No.
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~22-29-33 ~22-29-33 ~27-31 Item Item Description Description Tubing, swaged, %" x 7W' Bolt, anchor, hex head, \4"-20 x %" Tubing, R1, 01-1, DE, x 60" Nut, hex, \4"-20 7/16" %" Bracket, 2" x Nut, square, \4"-20 Va" Bracket, 2" to Lockwasher, internal, \4"...
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Item Item Description Description Bracket, 2" x %" Tubing, %" x 41" (one drilled 2 3/32") Va" Bracket, 2" to Clamp, boom-to-bracket Tubing, %" x 39", two drilled holes Tubing, swaged, %" x 7W' Beta Rod Tubing, R1, 01-1, DE, x 60"...
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Select two each of the element tubes (4, 5 & 1) and assemble as in paragraph 4, page 4. Again using #6 x %" Type A screws and lockwashers (Item Nos. 25 & 35). Tighten securely. Select two each of element tubes (Item Nos. 4, 6 & 9) and assemble as you did previously.
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Connect the center conductor to the top Driven Element and the braid to the bottom Driven Element as shown. Tape the exposed portions of the braid to prevent it from shorting out on the boom. When the antenna has been completely assembled, secure the boom clamps to the casting using the four (4) "-18 5"...