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infra·Solved·May 2, 2026

Coworking Wi-Fi drops every afternoon around 3pm

AP
Surfaced by Adam Pang
·62 citizens affected

Summary

Connection becomes unusable in the main coworking from ~3pm to 5pm. Calls drop, deploys fail, members leave to cafes.

Why it happens

AP-3 in the south wall is on the same channel as the building neighbour. When their afternoon shift starts both routers fight for 5GHz band 36.

Solution proposals (1)

ML
Marcus Lee

Re-channel AP-3 to band 149 + add second AP in south corner

Two-step fix: (1) move AP-3 off the saturated 36 band onto 149, which the neighbour is not on. (2) Mount a second Unifi U6-Pro on the south column to handle the afternoon load. Estimated parts: $189.

Documentation. What shipped.

Fixer: fc5b4c87-8d87-4967-a285-6022b7750989

Logged channel utilisation across a week. Band 36 hit 92% saturation between 14:50 and 17:10 every weekday. Switched AP-3 to band 149, added a Unifi U6-Pro mounted on the south column. Latency p95 went from 480ms to 38ms during the problem window. Total parts: $189. $51 returned to bounty pool for next infra fix.

Spent $189

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