Hi, I have a Ubiquiti UniFi 6 LR v2 devices flashed with openwrt 22.03.2 and I observed some radio1 losses for many days.
I observe since some reboot (easily prouved by short uptime)
If I disable radio 1, reboot seems to happens less often.
The devices seems to be hot so i made some homemade Q&D thermal log with cron on my device.
* * * * * echo $(date -D "%a, %d %b %Y %T %Z" +'%Y%m%d-%H:%M') $(cat /sys/class/thermal/thermal_zone0/temp) >> /etc/backup/thermal
And seems to be very hot on the inside : temperatures seems to be near 67°C when logging stops (and when device reboot). I found on some spec that shutdown temperature on device is 70°C.
Load on device is low : Load average: 0.05 0.21 0.11 2/90 4629
Disabling radio 1 again and temperature seems to be a little bit cooler 62°C
The cooling design of UniFi 6 LR is poor as the heat is not properly transfered from the inside to outside.
Is there anybody facing the same issues ?
Is there a way to make device do more throttling to reduce heat ?
I'm trying to limit tx power on both wlan devices, I will post results soon.
limiting at half the tx power only slows down the heat of the device but don't stop it.
Room temperature is 19°C so this isn't environmental issue.
Anybody knows a way to enventually clock down the device to test if this is a clock issue ?
testing snapshot of yesterday and temperature on idle seems to be more cooler, around 54°C.
parsed changelog in git since version 22.03.2, doesn't see which change fix my issue, probably side effect.
Flashed back to 22.03.2, problem occurs again. So definitively fix linked to a change done since 22.03.2.
I will wait for next release but i'm curious of which change fixes my issue 
Hi Grilltout
I've just ordered one of these Unifi 6 LRs and saw this post. I see the stable build is now on 22.03.3. Have you got that and has it resolved the heat issue? I don't know if this has anything to do with it, but whilst researching this device I Wiki'd what OFDMA stands for and on https://en.wikipedia.org/wiki/Orthogonal_frequency-division_multiple_access - near the top it lists one of the disadvantages as follows:
"The complex OFDM electronics, including the FFT algorithm and forward error correction, are constantly active, thus consuming power, independent of the data rate, while OFDM combined with data packet scheduling may allow FFT algorithm to hibernate at times."
I wonder if that has anything to do with the overheating? I'm a relative noob though, so might be completely on the wrong track.
The unit seems to be stable but room temperature still low so it isn't a proof of stability.
Unit temperature still high 62~67°C, but don't reboot.
So i didn't try to go back to release 22.03.3 and still stick to r21657-9260027535
For OFDM, I'm also a noob on that technology and i don't know how to disable or made test with openwrt.
I've got my unit now and have it running nicely but haven't had a chance to check for the overheat issue yet. I actually had a right headache with it at first but that turned out to be done poor cabling done by myself which took me hours to work out. How is it that you monitor the temperature of yours, does that just appear in the system log somewhere?
The only trouble shooting step I was thinking of was going to be to switch off radio 1 as well, because I don't think radio 0 has WiFi 6 so if it was ofdm that should work, but it looks like you've ruled that out already.
Actually one other thing I'm going to try is reducing the transmit power on the radios to see what that does. It was mentioned as a possible solution on a Unifi forum https://community.ui.com/questions/U6-LR-APs-heat-up-to-48-deg-Celsius-normal/5323a00e-bac4-4d19-be2b-391ad5c9ebc7
And on another of their forums they covered what different levels corresponded with the OEM software for low, medium and high. https://community.ui.com/questions/TX-Power-Auto-Vs-Low-Vs-Medium-Vs-High/ac006f67-a837-4740-b4bb-c272d5b408ae
I'll probably try setting both radios to 10 and see what happens.