6.9
-
4CDD
-
125 DIMENSION SHEET
THE NOTED EXPOSED DIMENSIONS ARE AN
APPROXIMATION. IF YOU WOULD LIKE TO SLIDE
THE PASS BAND LOWER OR HIGHER IN FREQUEN-
CY THE BEST APPROACH WOULD BE TO ADJUST
ALL THE TIPS EQUALLY. TO LOWER THE ANTENNA
IN FREQUENCY YOU WOULD LENGTHEN THE ELE-
MENT TIPS, TO RAISE THE ANTENNA IN FREQUEN-
CY YOU WOULD SHORTEN THE ELEMENT TIPS. AN
ADJUSTMENT OF
1”
ON EACH END OF THE ELE-
MENTS THIS RESULT IN AN APPX. 20 KC SHIFT.
57.00”
EXPOSED 1/2 TIP
REAR DRIVEN ELEMENT
REFLECTOR ELEMENT
DIRECTOR ELEMENT
202.00”
176.00”
124.00”
FRONT DRIVEN ELEMENT
54.50”
28.00”
38.50”
EXPOSED 1/2 TIP
EXPOSED 1/2 TIP
EXPOSED 1/2 TIP
260”
BTM POSITION
MEASURED
FROM REAR
OF BOOM
GUY
CLAMP
GUY
CLAMP
ATTACH PHASE
LINE STAND OFF
WITH
LARGE NYLON
TIES
SIDE GUY
ASSEMBLY
4:1 BALUN
ATTACHES TO
THE PHASE LINE
CLAMP BLOCK
ON EACH SIDE OF
THE ELEMENT
48.00”
FROM
BOTH
ENDS
