Mobile Load Coil Antenna
Standard B4903
PREMIUM MOBILE LOAD COIL ANTENNAS ARE INDUSTRY STANDARD
Laird Technologies’ ongoing commitment to refinement in mechanical and electrical
design has resulted in the most technically advanced mobile load coil antennas on the
market. Exclusive features such as stainless steel whips, housings constructed with ABS
material injected molded around a solid brass insert, and gold plated push pin contacts
make Laird Technologies the obvious choice for quality and long lasting value for
demanding mobile radio communications.
FEATURES
•
⅝”
wave design for true 3 dBi
performance
• High performance mobile antenna
operates on a 6” diameter (min.)
ground plane
• Straight stainless steel
• Easy installation with optional
NMO Mounts
• 100% tested on a network
MARKETS
• Public safety
• Transportation
• Utility
• Military mobile
ANTENNA PATTERNS
0°
90°
270°
180°
Elevation Polar Radiation Pattern
490 MHz
Americas: +1.847 839.6907
IAS-AmericasEastSales@lairdtech.com
Europe: +44.1628.858941
IAS-EUSales@lairdtech.com
Asia: +86.21.5855.0827.127
IAS-AsiaSales@lairdtech.com
www.lairdtech.com
Mobile Load Coil Antenna
Standard B4903
SPECIFICATIONS
ELECTRICAL
Frequency Range
Gain
VSWR
Maximum Power
Nominal Impedance
Polarization
Pattern
Coaxial Cable Length & Type
(For Vertical Polarization)
Terminations
490-512 MHz
3
dBi
< 1.5:1
100 W
50
Ω
Vertical
Omnidirectional
None
NMO style
MECHANICAL
Color
Height
Diameter
Weight
Material
Mounting Information
Black or chrome
B4903: 11.625 in (29.5275 cm)
B4903S: 12 in (30.48 cm)
1.44 in (36.576 mm)
B4903: .355 lbs (5.68 oz)
B4903S: .425 lbs (6.8 oz)
ABS Base/Stainless Steel Rod
Ground Plane
MODEL AND ORDERING INFORMATION
MODEL
B4903
BB4903
B4903S
BB4903S
DESCRIPTION
490-512 MHz, Chrome Finish
490-512 MHz, Black Finish
490-512 MHz, with Spring, Chrome Finish
490-512 MHz, with Spring, Black Finish
OVERALL HEIGHT
11.625 in
11.625 in
12 in
12 in
ANT-DS-B4903
111114
Any information furnished by Laird Inc. and its agents is believed to be accurate and reliable. All specifications are subject to change without notice. Responsibility for the use and
application of Laird materials rests with the end user. Laird makes no warranties as to the fitness, merchantability, suitability or non-infringement of any Laird materials or
products for any specific or general uses. Laird shall not be liable for incidental or consequential damages of any kind. All Laird products are sold pursuant to the Laird Terms and
Conditions of sale in effect from time to time, a copy of which will be furnished upon request. © Copyright 2014 Laird Inc. All Rights Reserved. Laird, Laird Technologies, the Laird
Logo, and other marks are trade marks or registered trade marks of Laird Inc. or an affiliate company thereof. Other product or service names may be the property of third
parties. Nothing herein provides a license under any Laird or any third party intellectual property rights.
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