3Com Corporation WL306 Manuel D’Utilisation

The standard detachable portable antenna supplied with the access point is a 
multi-purpose antenna suitable for a variety of environments, including office 
LANs, physical plants, and factory floors. If your site has special requirements that 
might be served by different types of antenna, four optional antenna models are 
available, as shown below:

You can order any of the optional antennas by model number from the 3Com 
Web site.

The fiberglass omnidirectional 
antenna (model number 3CWE490) 
is designed for use in harsh indoor 
environments. It can be centrally 
located on the ceiling to provide 
uniform coverage over a wide area.

This antenna features a built-in 
matching network that eliminates 
the need for a ground plane.

This antenna can be mounted on 
the ceiling by means of a standard 
ceiling-mount bracket. Before 
installing, ensure that access is 
available for cable routing.

This antenna does not have an electrical connection between the mask mount and 
the coaxial cable shield. However, adding a lightning arrestor will correct this 
situation by grounding the outer shield as recommended. Some arrestor designs 
provide over-voltage protection for the signal sent down the cable. If you use such 
a design, be sure that it can pass signals used in the 2.5 GHz signal range. Many 
inexpensive units are available with F connectors, but these are typically designed 

Design and type

Omnidirectional 
(fiberglass)

Ceiling-mount 
omnidirectional

Ceiling-mount 
hallway

Directional Panel 
(indoor/outdoor)

Directional Panel 
(outdoor)

Directional Panel 
(outdoor)

Frequency Range 2.400-2.4835 

GHz

2300-2500 MHz 2300-2500 MHz 2300-2500 MHz 2300-2500 MHz 2300-2500 MHz

Gain

4 dBi

2.5 dBi

4 dBi

8 dBi

13 dBi

18 dBi

VSWR across 
band

< 1.5:1

< 1.35:1

< 1.5:1

< 1.5:1

< 1.3:1

< 1.5:1

Max Power Input 20 W

50 W

10 W

20 W

20 W

20 W

Temperature 
range

-40

°

C to +80

°

C

-40

°

C to +80

°

C

-40

°

C to +71

°

C

-40

°

C to +80

°

C

-51

°

C to +71

°

C

-51

°

C to +71

°

C

Dimensions 
(inches)

10” (height)

4.25 (diameter)

2.6 x 1.8 x 0.2

5.1 x 4.7 x 1.5

8.7 x 7.9 x 1.4

14.7 x 13.5 x 1.5

Weight

5.34 oz.

8 oz.

2 oz.

8 oz.

12.32 oz.

36.8 oz.

Cable

A six-foot accessory cable (model 3CWE480) is required for each of these optional antennas. It provides the 
transition from the SMA connector on the access point to the N-type connector on the antenna. A 20-foot 
cable (model 3CWE481) and a 50-foot cable (model 3CWE482) are also available.