18. Confirm other condition
(1) Is wireless equipment with strong radio wave used around the machine?
Wireless equipment : Turn off the radio, and confirm whether the communication recovers
Not used : Continue nest step
Verify the radio frequency.
Orbcomm frequency is UHF/137.0 - 150.05MHz、UHF/400.075 - 400.125MHz
If frequencies are the same, suggest to change frequency of radio
as this might cause interference to Orbcomm data transmission.