User's Manual

22
Appendix A: Adding a 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.)
Using a Long Range Antenna with a Gateway
1. Open the Gateway.
2. Using a Phillips-head screwdriver, remove the two screws attaching the
smoky plastic cover over the Gateway’s electronics.
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
Mesh
Antenna
R
Battery
EM
Mesh
Davis
TalkCell BLE
DID: AA123456789
EM
Mesh
B
atter
y
y
Ce
ll
B
LE
D
av
is
Ta
l
k
Plastic Cover
Screws
Antenna
Jack