checksum error and 9 good packets. There are 26 packets that were transmitted from this module that received acknowl- edgment. There are 5 retrans- mitted packets due since no ac- knowledgment was received.

Appendix A: External Antenna Options

8 dBi Omni-Directional Antenna

Electrical Specifications:

Frequency:

2.4 to 2.483 GHz

Gain:

8 dBi

3 dB beamwidth:

15° in elevation plane, uni-

 

form in azimuth plane.

VSWR:

1.5:1 max @ 50 ohm

Polarization:

Vertical

Mechanical Specifications:

Antenna Type:

Colinear

Size:

750 mm

Weight:

1.5 kg

Connector:

Type N Female

Environmental Specifications:

Windload:

240 km/hr.

Humidity:

100%

30

ADAM-4550 User's Manual

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Advantech ADAM-4550 user manual Appendix a External Antenna Options, DBi Omni-Directional Antenna