Link Quality

Link Quality (LQ) is a numeric value that provides a real-time metric on the quality of communication between the CB2 BaseStation and the Radio Pack. LQ serves as a diagnostic tool for proper system operation and troubleshooting Radio Packs.

• The LQ value represents the number of successful audio packets of the last 100 transmissions—99 being the most, 0 being the least.
• With CrewCom, the receiving LQ signal is reported for both the CB2 BaseStation and Radio Pack. The Radio Pack’s LQ indicator with the box around it is the BaseStation’s LQ from the RP. If this LQ is lower than you typically experience in normal operation, then it is an indication that you may have an issue related to interference, the BaseStation, or a cable connection. If only the RP’s LQ is low, it could be an indication that you may have an issue related to interference or the Radio Pack.
• What should the LQ value be during operation? — The LQ will not remain at an exact value during system operation. Depending on what degree of outside interference or attenuation (blocking) is present, the LQ will fluctuate during normal operation. Fluctuations in LQ can and will span a wide range of values. The lower the LQ, the poorer the audio quality will be during operation. During start-up, within adequate range and no outside influences present, the LQ should display “99” which is the highest LQ value a Radio Pack or BaseStation can have.
• What if the LQ on a single Radio Pack is below “99” at start-up? — This depends on where the Radio Pack is located at start-up, but if the other Radio Packs on the same BaseStation are at “99” this is a good indication that an isolated radio issue exists within that Radio Pack. If the LQ value has dropped considerably lower or if that unit is experiencing poor audio quality, it may require service.