Installation
2.1.2 Supported antennas
You can use the following antennas with the units:
Antenna
Description
Total
gain
Compatible cable
(WL-TX-900 only)
Wl-WH900-SMA
Whip antenna for mounting
directly onto the module -
operation up to 1 km.
-6 dBi
N/A
WL-CFD890EL
0 dBi Dipole antenna with 15’ of
Cellfoil cable and SMA connector.
0 dBi
N/A
WL-SG900EL
5dBi Collinear omni-directional
antenna with N-type connector.
5 dBi
CC10 or CC20.
WL-SG900-6
8dBi Collinear omni-directional
antenna with N-type connector.
8 dBi
CC20.
WL-YU6-900
10dBi Yagi directional antenna
with N-type connector.
10 dBi
External cable with
loss > 9dB.
WL-YU16-900
15dBi Yagi directional antenna
with N-type connector. You can
use the following cables with the
units:
15 dBi
External cable with
loss > 15 dB
2.1.3 Radio transmission distances
The unit will operate reliably over large distances depending on the:
Antenna type;
Antenna location;
Amount of radio interference; and
Radio path obstructions (e.g. hills, trees and buildings).
Typical reliable distances are 20+ km using a unity gain antenna configuration (1W
Equivalent RF power permitted) with a good radio path.
You can only achieve maximum transmission distances if the radio path is “line
of sight”. Elevating antennas above intermediate obstructions including hills
and trees will improve transmission distances. Due to the earth’s curvature, you
must also elevate antennas above ground level for paths greater than about 5
km.
NOTE
Modules will operate reliably over shorter distances with some radio path obstruction;
however obstructions also reduce the reliable distance. For very short distances, you
can also mount the antennas inside buildings.
The closer the obstruction is to the antenna, the greater the blocking effect. For
example, a group of trees around the antenna is a larger obstruction than a group of
trees further away from the antenna.
You must test all obstructed paths to check the reliability of the path.
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