After updating AP (921GS-5HPacD r2) to 6.41.3, the signal strenght has been lowered in some clients (in 6.38 and 6.34 everything was okay).
Clients - SXT 5nD r2(6.38) and SXT Lite 5(6.38). Someone encountered this problem?
Did you check if there wasn’t a country regulation update since 6.38? If you’re not running superchannel 
I using superchannel.
How much lower?
before the update
after the update
Wow - there is a big difference in signal levels between those versions ?
Can you downgrade to bugfix or is there something you need to use on 6.41? I’ll upgrade a link tomorrow to 6.41.4 and see what happens.
Here is 6.40.4 so long…
Yes
I downgrade AP to (6.40.7 bug fix), there was no change. 6.41.4 - Analogous.
Another client (frimware AP - 6.40.7 and 6.34.5). TХ from AP has decreased.
Upgraded to 6.41.4 and then downgraded to 6.34.6. No change at all. (Dynadish AR9888 chipset)
Might have to do with specific settings you have or maybe the chipset in the AP/Station. Can you post more info?
AP - RB 921GS-5HPacD r2 (AR9888 chipset), Client SXT Lite5(AR9300 chipset)
Setting absolutely not changed either before or after the firmware.
What information in the settings can be helpful?
Settings and equipment are typical for all. This bug occurs only in some.
I have the same sector + sxt client, might downgrade it tonight as see what happens. Just had to switch to Nv2 and new freq, so don’t wanna piss them off any more than what I have.
If it only happens on some clients, maybe open a ticket with Mikrotik and send them a Supout of the affected clients?
Let’s try and please downgrade to 6.34. If this is a bug in the firmware, I think that they fix it, but I would like to know if this problem is in my links or not only.
You appear to running Nstreme have you tried NV2 and check if you also have reduced signal level.
OK results as follows:
SXT 6.41 + Sector 6.40.6
SXT 6.34.6 + Sector 6.36.4 (came out with 6.35 so didn’t want to downgrade too far and potentially break anything)
My settings:
Sector:
/interface wireless
set [ find default-name=wlan1 ] country=“south africa” default-forwarding=no
disabled=no frequency=5825 frequency-mode=superchannel mode=ap-bridge
radio-name=“xxx” ssid=zzz wireless-protocol=nv2
wps-mode=disabled
SXT:
/interface wireless
set [ find default-name=wlan1 ] adaptive-noise-immunity=client-mode band=
5ghz-a/n country=“south africa” disabled=no proprietary-extensions=
pre-2.9.25 radio-name=“xxx” ssid=zzz
Excuse the bad CCQ, still trying to find good frequency…
Something to consider …
After updating , are the wireless connection rates faster ?
Reason why I ask , Faster connection rates always have less TX power and lower receive sensivity.
Thus as connection rates increase, the signal strength decreases.
In your enviornment , after your upgrade , are you now getting better/faster throughput ? If so , then it could be partialy due to faster wireless conection rates - which then may look like a weaker signal.
FYI - An initail 6 Meg wireless connection could drop 15 db after the connection rate instreases to 54 Meg or 150 Meg or faster rates.
North Idaho Tom Jones
OK, thank you for trying.
That at nstrem that at nv2 - levels are identical.
it’s all right, but MCS have not changed. Therefore, this statement is not true in this case.