So I have the following router/hub devices that can interfere with Zigbee:
Access Point 1 on channel 6
Access Point 2 on channel 11
Hue Hub on channel 20
Huszb-1 on channel 15 (default)
I am trying to improve my Zigbee mesh and I am considering changing the channel on my HUSZB-1 from the default 15 channel and I want to make sure I get it right. Based on this article, my current setup is causing interference due to the Zigbee channel being on 15 and Access Point 1 being on 6. I also assume the Hue hub is not helping either.
My plan is to keep the access points on their channel 6 and 11 and moving the HUSZB-1 channel to 11 and getting rid of the Hue hub and pairing the bulbs I currently have on it to the HUSZB-1.
I don’t recall why I haven’t gotten rid of the Hue hub yet but I do believe I had a reason in the past but I can’t see keeping it any longer. My current Hue items are 3 Lightstrips, two color bulbs and a dimmer which I assume are all Home Assistant compatible via the HUSZB-1.
Indeed, it is much more important to connect the Zigbee Coordinator radio adapter via long USB extension cable to a USB 2.0 port (not a USB 3.x port) to get it away from any sources of EMF/EMI/RMI interference in the same freqency range, (especially USB 3.x devices/adapters/cables and WiFi access-points/routers close to the devices are infamous for interfering with Zigbee radios), as well as very important to add more known good Zigbee Router devices in order to build out your Zigbee network mesh (e.i. add many mains-powered Zigbee devices that are always on, usually the more the better).
I have mostly bulbs that act as routers, I also have several outlets that also route. I get many network congestion errors and always have bulbs falling off. I switched from 20 to “auto” which made it 25 and still says 95% usage after a restart. I switched to channel 26, and same, 95% usage. I expected 26 to be clear per all the docs I read but I guess not? Plus side all my 80 odd devices handle channel switching very well minus 5 cheapo ali express humidity sensors.