User's Manual

222
Where to ground the device?
This radio must be grounded at the pole and at the POE. This is because the radio
is between the exterior antenna and the POE ground. See the examples below.
Grounded Radio
A grounded radio causes the surge to pass directly to ground, bypassing the radio.
Ungrounded Radio
An ungrounded radio causes the surge to pass through the radio. In this case, the
radio most likely will be damaged.