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DSEFO144-12 Rev 8/19
7)
Next is the T-Match assembly. Once again, refer to figure 4 and 5. Starting with the left
T-arm, viewed from the rear, pass a 6-32 X ½
” screw through a #6 internal tooth lock washer
and through a lug on the center conductor of the balun through a second # 6 internal tooth
lock washer, through the T-arm and into the insulator. Do not over-tighten the screw as the
threads of the insulator can be easily damaged. The right side is next. Pass a 6-
32 X ½” screw
through a #6 internal tooth lock washer, then the center conductor of the balun, another #6
internal tooth lock washer, the lug from the N connector, another #6 internal tooth lock washer,
the T-arm and screw into the insulator.
8)
Place a #8 internal tooth lock washer on the screw securing the driven element and the
T-arm support bracket, then the two ground lugs from the balun, then another #8 internal tooth
lock washer and nut. Tighten securely.
9)
Last, pass 8-
32 X 1 ¼” screws through the holes in the shorting bars and place a split
lock washer and nut on the other end. Slide the shorting bars over the ends of the driven
elements and over the T arms and measure from the T arm mounting screws to the inside
edge of the shorting bars and set it at 160 mm.
FIGURE 6.
