Troubleshooting
QB.11-R Installation and Management
Communication Issues
154
Communication Issues
Two Units Are Unable to Communicate Wirelessly
If a wireless link is possible after testing two units within close distance of each other, then there are two possible reasons
why wireless connectivity is not possible while the units are at their desired locations:
1. There may be a problem in the RF path, for example, a bad connector attachment (this is the most common problem
in installations) or a bad cable (water ingress).
NOTE:
The cables can be swapped with known good ones as a temporary solution to verify cable quality.
2. Another reason may be related to an interference problem caused by a high signal level from another radio. This can
be checked by changing the frequency and then verifying whether another channel works better or by changing the
polarization as a way of avoiding the interfering signal. To know in advance how much interference is present in a
given environment, a Spectrum Analyzer can be attached to a (temporary) antenna for measuring the signal levels on
all available Channels.
NOTE:
The antennas are usually not the problem, unless mounted upside down causing the drain hole to be quickly
filled with radome.
If a wireless link is not possible after testing two units within close distance of each other, then the problem is either
hardware or configuration related, such as a wrong Network name, Encryption key, Network Secret or Base Station
Name. To eliminate these issues from being a factor, resetting the both units to factory defaults is the recommended
solution.
If a wireless link is not possible after resetting the units and verifying that one unit is a BSU with WORP Base interface
configured and the other is a Satellite, then the problem is not configuration related and the only remaining reason is a
possible hardware problem. Acquiring a third unit and then testing it amongst the existing units will help pinpoint the
broken unit.