CUSHCRAFT X740, Сборка и установка, Страница: 3 / 8

2 - Element Assembly
Figure A and B show the steps required for element assembly. Identify
the parts required using the Element Subassembly Parts List. Slide EA
sections over fiberglass insulator (567) until #8 screw holes line up. Insert
screws (231) through holes and secure with lock washer (941) and nut
(11). Insert EB tubes 4” (10.2 cm) into EA slotted ends until they stop
against the EA insert tube and secure with worm clamp (412). Insert EC
tubes 4" (10.2 cm) into slotted ends of EB and secure with worm clamp
(411). Insert LCA coils 4" (10.2 cm) into slotted ends of EC and secure
with worm clamp (411). Insert ED tubes 4" (10.2 cm) into slotted ends
of LCA coils and secure with worm clamp (409). Insert EE tubes into
ED tubes and adjust the element half lengths per Chart A. Secure EE
tube with worm clamp (407). Place plastic caps (77) on ends of EE
ID Part # Description Dimensions Qty
11 010011 SS Nut #8-32 2
26 290326 Warning 1
Sticker
41 011941 SS Lock #8 2
Washer
77 050077 Black 3/8’ 2
Plastic Cap (0.9 cm)
231 010231 SS Machine #8-32 x 1-3/4” 2
Screw (4.4 cm)
407 030407 Worm 5/8” 2
Clamp (1.6 cm)
409 030409 Worm 11/16” 2
Clamp (1.7 cm)
411 030411 Worm 1-1/8” 4
Clamp (2.9 cm)
412 030412 Worm 1-1/2” 2
Clamp (3.8 cm)
567 124567 Fiberglass 1” x 8” 1
Insulator (2.5 x 20.3)
EA Aluminum 1-1/4” x 72” 2
Tube (3.2 x 183 cm)
EB Aluminum 1-1/8” x 48” 2
Tube (2.8 x 183 cm)
EC Aluminum 1” x 48” 2
Tube 2.5 x 183 cm)
ED Aluminum 1/2” x 48” 2
Tube (1.3 x 183 cm)
EE Aluminum 3/8” x 36” 2
Tube (1.0 x 91 cm)
LCA LCA Loading 2
Coil
41
11
941
11
231
231
567
EA
EB
EC LCA
ED EE
EA
412
411 411
409
407
77
Figure A
Figure B
26
Element Half Length
X740
2
Center Element
Frequency Half Length
(MHz) Inches Meters
7.000 250 6.35
7.075 248 6.30
7.150 246 6.25
7.225 244 6.20
7.300 242 6.15