17
Appendix A: Using an External Long Range
Antenna
Add a high gain external antenna to your Gateway and/or Nodes to increase the
transmission distance of an EnviroMonitor mesh network up to 10,000 feet (3,000
m). Antennas can be used for either Node-to-Node or Node-to-Gateway
transmission.
Choose either product number 7676, 5dBi; or 7678, 8dBi. The table below shows
estimated transmission ranges of each of the antennas. (The antenna that comes
installed in your Gateway or Node is a standard dipole.).
If you need a longer cable for installation of the antenna, use an Antenna
Extension Cable, product number 7692.025.
See page 20: Adding an Extension
Cable to your Long Range Antenna.
Antenna Ranges
Antenna
Distance Above Ground or Highest Crop Height
6 ft/ 2m
8ft./2.5 m
10ft./3 m
Standard Dipole
1,700 -
2,000
515 -
610 m
1,800 -
2,400’
545 -
730 m
2,400 -
4,000’
730 -
1,220 m
5dBi External
2,600’
790 m
4,000 ‘
1,200 m
6,000’
1,800 m
8dBi External
5,000’
1,500 m
7,000’
2,100 m
10,000’
3,000 m
