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Case Study: No Loads Are Installed on Idle Antenna Ports, Affecting Device Reliability
Symptom
At a site, no RF load is installed on an idle antenna port of an outdoor AP with external antennas, affecting device reliability.
Relevant Alarms and Logs
None
Cause Analysis
If an outdoor AP with external antennas has an idle antenna port unconnected, signals from the antenna port will be reflected back to the AP, affecting signal and device reliability.
Procedure
- Install a 50-ohm RF load on the idle antenna port. For details about installation, see RF cable deployment requirements in Connecting RF Cables.
Suggestion and Summary
Outdoor APs often have high transmit power. Unused antenna ports must have 50-ohm RF loads connected to prevent radio interference, and the joints between the antenna ports and RF loads must be sealed with waterproof insulation tape. Huawei offers 50-ohm RF loads with the part number 27110001 for you to purchase.