We found that after upgrading to 4.16 signal-strenght have some strange values (from -90 to -106).

SNR is from -30 to -40

# INTERFACE RADIO-NAME MAC-ADDRESS AP SIGNAL-STRENGTH TX-RATE UPTIME
0 elite-brdo3 00:E0:4C:FA:63:55 no -76dBm@1Mbps 11Mb... 5h41m52s
elite-brdo3 00:E0:5D:FF:59:6A no -75dBm@1Mbps 5.5M... 5h41m28s
elite-brdo3 00:E0:4C:FB:AC:1B no -64dBm@1Mbps 11Mb... 5h41m28s
elite-brdo3 00:FD:07:93:DE:8E no -103dBm@1Mbps 11Mb... 5h41m15s
elite-brdo3 00:E0:5D:FF:5C:CC no -70dBm@1Mbps 5.5M... 5h41m7s
elite-brdo3 00:FD:07:95:1D:08 no -103dBm@1Mbps 5.5M... 5h41m7s
elite-brdo3 74:EA:3A:B2:7B:03 no -94dBm@1Mbps 11Mb... 5h41m4s
elite-brdo3 00:FD:07:97:12:BE no -88dBm@1Mbps 11Mb... 5h39m42s
elite-brdo3 00:FD:07:95:26:60 no -99dBm@1Mbps 11Mb... 5h38m29s
elite-brdo3 00:FD:07:99:11:FA no -102dBm@1Mbps 5.5M... 4h27m8s
elite-brdo3 00:FD:07:99:0F:D3 no -100dBm@1Mbps 5.5M... 4h10m56s

In AP Client Signal view there is strange look for signal strenght leves per bandwith.

After disable/enable interface everything is back to normal for some while and after few hours problem is back.

Equipment: RB600A + Daughterboard.
Installed cards: XR2, XR5, cm9, 4 wlm-54gp

Some help?

check the noise-level of the wireless card if it changed when you have such issue compared when it is normally working.
you have wireless-nv2 package enabled?

I dont have nv2. I did not able to configure it correctly.
NV2 package is disabled.

My CPE-s are not mikrotik but TP-link WA5210G and 543G. Dont support nv2.

Now when you mention noise...
I have big noise on all interfaces...
Noise says -94 when i disable interface, but after a while it goes up to -75...

Noise -73 is very bad!
I did not notice this on 4.13 and 4.3

Should I donwgrade ? I reduce power on xr2 but nothing is happening.

Here is a screen shot...

We checked everything... from antenas to cables and pigtails...

Any suggestions??

try with other card

Nope... it is not card problem...

I do one thing that by all rules should not be done... I put 3AP on same channel and noise is reduces on all 3AP ?!?

Last 2 hours everything is working just fine...
noise -95
signal -60 to -75
ack time 60-70

ping 2-3ms

I wonder if that's why we've also had more 2.4Ghz issues with our XR2 cards. I've upgraded firmwares and noticed similar issues. I also can't use NV2 because our 2.4Ghz access points are old and have a huge mixture of different CPE's

you can try to disable periodical-calibration and another option is to set manual noise floor threshold to your specific noise level.

I still think this is a bug... I have strange strings in list when snoop.
Can I downgrade from 4.xx to 3.xx without having licence problem ?

This is running AP and customers gone crazy...

19 AFB 2442MHz 00:80:48:7E:BE:F1 elite-brdo2 5 8% 37.5% 523.4kbps
20 FB 2442MHz 00:0E:2E:48:51:9D Atomic 0 0% 0% 0bps
21 AFB 2442MHz 00:80:48:67:60:63 elite-brdo 3 1% 5.5% 15.1kbps
22 AFB 2442MHz 00:02:6F:42:05:A2 elite-palest... 7 1% 5.4% 32.0kbps
23 AFB 2442MHz 00:0E:2E:48:41:94 Atomic 1 1% 5.9% 9.8kbps
24 AFB 2452MHz 00:80:48:7E:1D:CB elite-hotel3 1 0.5% 5.7% 4.1kbps
25 AFB 2452MHz 00:0B:6B:DB:25:F2 elite-hotel8 1 0.5% 6.1% 4.4kbps
26 AFB 2452MHz 00:19:E0:A4:6D:43 conal-group 1 0.3% 4.3% 2.8kbps
27 AFB 2462MHz 00:02:6F:3E:80:B8 elite-palest... 1 5.4% 23.5% 452.7kbps
28 AFB 2462MHz 00:80:48:66:DE:5A elite-brdo5 6 5.5% 23.9% 179.2kbps
29 AFB 2412MHz 00:80:48:52:FF:BA EXPERT-GV 1 0.4% 1.7% 3.8kbps
30 AFB 2437MHz 00:13:10:29:0E:9E kladovonet-n... 1 0% 0% 0bps
31 AFB 2437MHz 00:1F:CF:11:D1:D6 rds1 1 0% 0% 0bps
32 FB 2437MHz 00:21:27:FE:E9:9C KMD 1 0% 0% 0bps
33 FB 2437MHz 12:25:53:1E:20:60 1 0% 0% 0bps
34 FB 2442MHz 00:05:59:26:0B:21 VLAJK\CF 0 0% 0% 0bps
35 AFB 2447MHz 00:02:6F:36:7D:CF elite-pemci 2 1.3% 16.4% 58.8kbps
36 FB 2452MHz B8:AF:C1:3A:31:52 SMAN71 1 0% 0% 0bps
37 F 2462MHz 00:55:6A:56:9A:AA 0 0% 0% 0bps
38 AFB 2412MHz 00:02:6F:36:7D:03 elite-palest... 1 0% 0% 0bps
39 F 2412MHz 00:02:6F:36:7D:ED elite-p\D0~e... 0 0% 0% 0bps
40 AFB 2412MHz 00:14:78:EE:84:1F elite-s 1 0% 0% 0bps
41 F 2427MHz 00:80:48:4F:0B:17 elite-\DBn\F... 0 0% 0% 0bps
42 AFB 2437MHz 00:80:48:66:DE:4E elite-vvrbica 1 0% 0% 0bps
43 AFB 2437MHz 00:13:F0:82:0C:9E Imadoffnet-n... 1 0% 0% 0bps
67 AFB 2462MHz 00:25:53:1E:E5:04 Aleksandar 1 0% 0% 0bps
68 FB 2462MHz 00:25:53:1E:CE:D4 moja_mrezabrzK 1 0% 0% 0bps
69 FB 2417MHz 00:12:2E:DD:61:7D elit\ED)pemc... 1 0% 0% 0bps
70 AFB 2427MHz 00:80:48:67:60:64 elite-pemci4 1 1.1% 9.8% 9.1kbps
71 AFB 2437MHz 00:1F:CF:11:42:70 www.cortinar... 1 0% 0% 0bps
72 AFB 2437MHz 00:25:53:1E:D3:CC T/\B4\B2\D0\A9 1 0% 0% 0bps
73 AFB 2437MHz 18:80:48:7E:15:CF SMAN91 1 0% 0% 0bps
74 AFB 2447MHz 00:80:48:7E:1D:CB elite-\11\FF... 0 0% 0% 0bps
75 AFB 2452MHz 00:02:6F:3F:9B:ED Simian-15 1 0% 0% 0bps
76 AFB 2462MHz 00:24:D2:5C:6A:00 moja_mrez1 0 0% 0% 0bps
77 AFB 2462MHz B4:82:FE:A1:E8:2C Pavle 1 0% 0% 0bps
78 AFB 2462MHz 00:E0:98:C5:DA:E4 802.11b-SSID 1 0% 0% 0bps
79 F 2412MHz 24:02:6F:04:8E:A4 3\FF\E6\C6\B... 0 0% 0% 0bps
80 AFB 2437MHz 00:E0:4C:FB:AA:7D kladovonet-ivan 1 0% 0% 0bps
81 AFB 2462MHz 00:0E:2E:A0:9A:00 default 1 0% 0% 0bps
82 AFB 2462MHz 00:24:D2:69:1B:92 moja_)peza 0 0% 0% 0bps
83 AFB 2462MHz D8:5D:4C:DA:DD:DE kladovonet-m... 1 0% 0% 0bps
84 F 2412MHz 00:02:6F:36:7D:03 \EDhite-pale... 0 0% 0% 0bps
85 F 2412MHz 7B:80:48:67:60:62 elite-brdo4 0 0% 0% 0bps
86 AFB 2427MHz 00:05:9E:84:7A:63 \C5\1Df\n\A8... 1 0% 0% 0bps
87 F 2427MHz 00:80:48:4F:05:47 elite-R\EE\E... 0 0% 0% 0bps
88 AFB 2437MHz 00:25:53:1E:3D:B8 @KS-96\17T\0... 1 0% 0% 0bps
89 AFB 2412MHz 00:80:48:7E:15:C7 E\18tERT 1 0% 0% 0bps

I still think this is a bug... I have strange strings in list when snoop.
Can I downgrade from 4.xx to 3.xx without having licence problem ?

You shouldn't have any issues with your license if you downgrade.

I first downgrade to 4.1 and have some issue with one card using superchannel (i got error that my license does not support it).

I move to 4.10... and now everything is working...

Give me 24h to be sure.

Regards,