Assembling the OMNI-B Series Antenna Kit
3
Assembling the OMNI-B Series Antenna Kit
Federal Signal www.fedsig.com
Figure 1 Exploded View
13
DETAIL B
1
2
3
4
5
11
7
10
8
ANTENNA
GASKET
9
6
ASSEMBLY STEPS:
OPEN PARTS BAG AND LOCATE THE FIVE SET SCREWS (ITEMS 5 AND 11).
1.
USING THE SUPPLIED HEX KEYS, THREAD THE SET SCREWS INTO THE DIE
-
CAST BRACKET JUST A COUPLE OF TURNS. THEY WILL BE FULLY
TIGHTENED LATER.
APPLY A THIN COAT OF GREASE TO THE UNPAINTED SURFACE AT THE
2.
CENTER OF THE BRACKET AS SHOWN IN DETAIL A.
ASSEMBLE THE NMO MOUNT & HARDWARE (ITEMS 2, 3, 7, 8, 9, AND 10)
3.
TO THE DIECAST BRACKET AS SHOWN IN DETAIL B. TIGHTEN HEX NUT W
ITH
3/4" OR 19MM SOCKET WRENCH TO APPROXIMATELY 50 IN-LBS.
APPLY A SMALL AMOUNT OF GREASE TO THE THREADS ON THE ANTENNA
4.
BASE AS SHOWN IN DETAIL C. ATTACH THE ANTENNA BASE TO THE NMO
MOUNT AND TIGHTEN IT SECURELY BY HAND.
SEE DETAIL A. APPLY A SMALL AMOUNT OF GREASE TO EACH OF THE
5.
FOUR RADIAL MOUNTING LOCATIONS ON THE BRACKET.
SEE DETAIL D. SLIP THE RUBBER CAPS ON TO ONE END OF EACH GROUND
RADIAL. SEE DETAIL VIEWS B & E. INSERT THE GND RADIALS INTO T
HE
BRACKET AND TIGHTEN THE 8-32 SET SCREWS TO APPROXIMATELY 15 IN-
LBS. *NOTE THAT THE OMNI-BUH MODEL HAS A MIX OF LONG AND SHORT
LENGTH RADIALS. THE SHORT RADIALS LOCATED ON THE SIDE WITH THE
FS LOGO.
A SPECIAL STEP IS REQUIRED WHEN THE OMNI-BVH MODEL IS USED FOR
6.
FREQUENCIES >168-174MHz. SKIP THIS STEP FOR ALL OTHER
APPLICATIONS. THE 14" WHIP WILL NEED TO BE TRIMMED TO 13". T
O TRIM
THE WHIP, USE A FLAT FILE OR ROTARY CUT OFF TOOL TO MAKE A NICK
IN
THE WHIP 13" FROM THE TIP OF THE BALL END (THIS SHOULD BE RIGHT
AT
THE START OF THE UNPAINTED SECTION). GRAB HOLD OF THE WHIP ON
EACH SIDE OF THE NICK AND SNAP THE END OFF. FILE THE END SMOOT
H
TO REMOVE ANY BURRS. SCRAPE THE PAINT FROM THE END OF THE WHIP
TO EXPOSE 1" OF BARE METAL.
SEE DETAIL F. APPLY A SMALL AMOUNT OF GREASE TO THE END OF THE
7.
THE WHIP AND THEN INSERT IT INTO THE ANTENNA BASE. TIGHTEN BOT
H
SET SCREWS TO APPROXIMATELY 15 IN-LBS.
SEE DETAIL A. APPLY ANY REMAINING GREASE TO THE INSIDE SURFACE
8.
OF THE BRACKET. ANTENNA IS READY FOR INSTALLATION.
DETAIL A
THIN COAT OF
GREASE ON
UNPAINTED AREA.
APPLY THIN
COAT OF
GREASE TO
INSIDE
SURFACE.
APPLY SMALL
AMOUNT OF
GREASE
PRIOR TO
INSERTING RADIALS
(4 PLACES).
DETAIL C
APPLY THIN
COAT OF
GREASE TO
THREADS ONLY.
DETAIL D
12
SLIP THE
RUBBER CAPS
ONTO THE
ENDS OF THE
FOUR RADIALS.
DETAIL E
TOP VIEW
*SEE NOTE 5
LONG
RADIAL
SHORT
RADIAL*
LONG
RADIAL
SHORT
RADIAL*
DETAIL F
WHIP
SET
SCREWS
APPLY
GREASE
ITEM
QTY.
DESCRIPTION
1
1
ANTENNA BASE WITH GASKET
2
1
NMO MOUNT/ADAPTER
3
1
O-RING
4
1
DIE-CAST ANTENNA BRACKET
5
4
SCREW, SET, 8-32, SS, SELF-LOCK
6
4
RADIAL, GND PLANE
7
1
LOCKWASHER, INT TOOTH
8
1
FLAT WASHER, 5/8
9
1
LOCKWASHER, INT TOOTH, THIN
10
1
HEX NUT, 5/8-24
11
1
SCREW, SET, 5/16-18, SS, SELF-LOCK
12
4
PROTECTIVE RUBBER CAP
13
1
RADIATOR / WHIP
NOT
SHOWN
2
HEAT SHRINK TUBING, 15/16" ID
NOT
SHOWN
1
DIELECTRIC GREASE TUBE