UISP and airMAX troubleshooting from the knowledge base: weak links, unreachable radios and UISP connections
Fix what Ubiquiti's ISP wireless articles document most: links with poor signal, throughput or stability (CINR, Fresnel clearance, alignment and chain balance, interference, atmospheric inversion, proper speed tests), radios you can't reach or that reboot or reset themselves, Ethernet faults, and UISP-side problems such as devices that can't connect, flapping status, refused AES keys and shaping that doesn't apply.
- Level
- Intermediate
- Length
- About 65 minutes
- Contents
- 3 lessons · 1 video · final exam
- Status
- Published · updated 2 Oct 2026
- Ubiquiti UISP
Skills you'll practise
- Diagnose a weak or unstable link using CINR, Fresnel clearance, MIMO chain balance and the planned signal
- Align PtMP and PtP links the way Ubiquiti describes and recognize side-lobe alignment
- Choose iPerf3 between PCs rather than built-in or internet speed tests to measure a link
- Work through Ubiquiti's checklist for a radio that is unreachable, reboots or resets to defaults
- Troubleshoot devices that can't connect to UISP, flap, or are refused because of an AES key mismatch
- Explain why suspension or shaping isn't applied to a subscriber and fix it
Course outline
- 1.UISP and airMAX troubleshootingVideo · 2 min
- 2.Links with poor signal, throughput or stabilityLesson · 23 min
- 3.Radios that are unreachable, reboot or resetLesson · 21 min
- 4.When UISP is the problemLesson · 20 min
- 5.UISP and airMAX troubleshooting from the knowledge base: weak links, unreachable radios and UISP connections: knowledge checkKnowledge check · 17 questions
- 6.Final exam9 questions · passing it completes the course, so people who already know the material can test out
Sources it draws on
The lessons and questions are written from these references, so learners can go back to the original.
- Ubiquiti UISP Help Center: ISP Wireless - Link with Poor Wireless Performance (Signal, Throughput, Latency/Jitter)
- Ubiquiti UISP Help Center: ISP Wireless - Antenna Alignment for Outdoor Wireless Links
- Ubiquiti UISP Help Center: ISP Wireless - Device Constantly Reboots or Resets to Factory Default Settings
- Ubiquiti UISP Help Center: ISP Wireless - Cannot Connect to Inaccessible or Unresponsive Device
- Ubiquiti UISP Help Center: ISP Wireless - Device with LAN Connectivity or Ethernet Issues
- Ubiquiti UISP Help Center: UISP - Troubleshooting
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