Those are indoor devices with 1-2dBi gain antennas. There should be not much actual difference in coverage.
Hello
*) snmp - added “tx-ccq” (“mtxrWlStatTxCCQ”) and “rx-ccq” (“mtxrWlStatRxCCQ”) values;
Still not working, any eta on the fix ?
Egert
LHG-5HPnD after upgrade (6.43.8 to 6.43.11) antenna gain has been set to 25dB (minimal value I can set), Rx dropped from -60dBm to -85dBm.
I don’t get it why you subtract antenna gain from received signal level, but ok… I wouldn’t care the numbers if link worked fine, but IT IS NOT.
Stable link became totally unstable. Disconnects about every 30 seconds. Rolled back to 6.43.8.
If the other side was not upgraded also, Rx signal strength shown here seems to be corrected by antenna gain, but this is just number. The problem causing link drops is that Tx power is reduced by antenna gain configured.
6.43.11 sets new minimum for antenna gain based on model. This hardcoded minimum can be retrieved:
[admin@wapac] > /interface wireless info hw-info wlan1
ranges: 2312-2732/5/b,g,gn20,gn40
2484-2484/5/b,g,gn20,gn40
tx-chains: 0,1
rx-chains: 0,1
extra-info: pciinfo:0x0, cid:0, gain:2
You can still increase absolute transmit power by setting country to no_country_set and frequency-mode to superchannel, but unless the antenna is operating in shielded environment, the device probably violates local regulations, as it does with previous version and antenna gain set to 0 dB as well.
Ondrej
I don’t get it why you subtract antenna gain from received signal level
Both sides of your link have antennas, the gain is subtracted from the TX power (as it should be, according to regulations). The signal dropped by the amount because the TX power on the other end was reduced (also).
After upgrade from 6.43.8 to 6.43.11 the “Registration Table” tab that shows the connected users associated is now reporting the interface as “unknown” see screenshots taken from two WLCs one still with the old version and another with the new one.
Could be just a listing problem but it could also affect the awareness of the users by the WLC …
6.43.8
https://www.dropbox.com/s/pqcusgpzz1ratb2/ROS6_43_8.png?dl=0
6.43.11
https://www.dropbox.com/s/h24081alo17j0bf/ROS6.43.11.png?dl=0
Note: Both the WLC (CHR) and the APs (wAP ac) were upgraded.
regards!
Confirm issue. Samba lose access after upgrade on firmware 6.43.11. Downgrade on 6.42.11 - restored access.
So, if I understood you correctly, before 6.43.11 antenna gain was also subtracted, but not enforced to be set whatsoever?
I had 0 there all the time before. Thought it means “default”.
Anyway, I have short link (500m) with a few trees in the middle of LOS.
I put LHG-5HPnD (24.5dBi antenna gain) on one side and SXT Lite5 (16dBi) on the other.
Both are elevated. It’s only couple of trees in the middle. And it’s winter now.
I can’t believe, respecting all regulations, my signal would be below -80dBm.
Not with such high gain antennas on so short distance.
To be precise, I (temporarily) upgraded only LHG. It was unbeareable. I was afraid to touch remote SXT,
because I don’t have remote hands there and connection was unstable. I had to downgrade.
Any idea what is going on?
Yup, that was my guess. Just couldn’t believe the result would be so unpleasant.
You can still increase absolute transmit power by setting country to no_country_set and frequency-mode to superchannel, but > unless the antenna is operating in shielded environment, the device probably violates local regulations> , as it does with previous version and antenna gain set to 0 dB as well.
I get that. I wrote how my link looks like in the post few minutes ago. So crappy signal received over 500m? It doesn’t compute in my head.
How is this handled with capsman?
Legal limits are about EIRP. EIRP is not Tx power at transmitter’s RF connector, it’s power at antenna perimeter. And that value is affected by antenna gain. Which is not how most of WiFi users (and, sadly, WISPs) understood things …
Hence … if legal limit is, say, 20dBm, substract 24.5dBi gain, add 0.1 dB cable loss and you get -4.4dBm (which is 0.363 mW) Tx power at LHG’s power amplifier). Until now, actual Tx power was actually set to 20dBm (not taking antenna gain into account), so actual EIRP was 44.4dBm …
Maybe your link is not as good as you believed it was.
Actually, trees make a lot of attenuation, more so in summer than in winter but still.
And a LOS path is not only defined by “I see the remote antenna”, you actually have to take the Fresnel zone into account.
(which means that halfway the path you need a larger unobstructed zone than at the endpoints)
IPsec settings are not saved and are reset. If you open through winbox when you log in IPsec - > Peers in one of the settings, the certificate settings are reset and does not save. I change the settings and then after a while they are reset again. when opened in winbox, it shines blue as if I had changed something, but I did not change anything. This is a bug, fix it Please!
I remember attending a Netgear “seminar” back in 2005-2006ish about their WiFi products, and I was trying to explain to the presenter that their products violated the law about EIRP (based on what he was trying to push to us - an access point -with no tx power control- and a high-gain panel antenna to be used together).
He just could not fathom that that’s the way you calculate the EIRP 
Tx power control is another thingie… as far as I know it is mandatory for EU 5.6 GHz outdoor WiFi (like DFS) but it isn’t available in MikroTik.
I understand all that. Really. Just can’t believe Mikrotik (until now) did not respect (or better word would be enforce) local regulations. I saw soooo many radiolinks based on MT with clear LOS (Fresnel zone 1) and signals levels below -70dBm. I’m guessing most of them would now stop working… if ISPs upgraded their MT’s firmware. And they will if they do.
I always thought antenna_gain=0 means “set it for me”, especially on hardware with built-in antennas.
Forget. The problem has disappeared!
I’ve made a new WEBFIG access a few minutes ago and the interfaces are now correctly listed.
Probably the problem were some old CSS/JS not refreshed in the browser cache.
regards!
HELP!
i have upgraded the RB4011 wireless and not work
the router flickers the lights of the SFP and the switch but it does not start, I’ve tried it in every way and it does not happen there, I had the 6.34.8 and updated this version this morning
I need help, because right now it is totally out of service, luckily I still keep the 951G and I can have internet, but I need to recover the RB4011
solved but with a strong dislike
I had to use netinstall to recover it
I have to reinstall everything again, this is not normal, if I had not had the reserve RB951 I would have everything stopped
After upgrading my RB3011, one of the CPUs peeks at 100% all the time (switches back and forth between CPUs). Anyone else with the same problem?
samba got broken after upgrade rb951ui-2hnd from 6.43.8 to 6.43.11.
When you make speed smb more than 5-6MB\s ?