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  |