If you change the tx-power for this card in 2.4Ghz-B or 2.4Ghz-G band from default to a specific value, then note that you should note that the card transmit +4db or +5db more that specified value.
Example, you set the tx-power=10, but the actual tx-power which will be transmited will be 14db or 15db.
It means that you should be careful when you are setting the tx-power more than 20, you could damage the card or the card could work unstable.
Hi Uldis,
On what RouterOS version does this apply and do we expect a version that will properly output the right tx when you set tx power to default. This is very important as this card is far more cost effective than the SRs. I have tons of these card ,and if it will never be stable with MikroTik i did rather just push them out on windows platform with mini-pci to pci adapters.
regards
Okechukwu
I’ve just changed a few of these radios from +26 to +20 and most got a +3 - +5dB improvement in strength.
I can remember doing this on the bench but thought it was related to something else…
Uldis, are you reffering to the FCC type or the ETSI type of cards?
I’ve been testing a link and found that the best signal strength I can get on 802.11g is when I set the card to 30… The link gets a 8-9db increase using 30 rather than default and 1-2db more if I set it to 20
uldis means FCC
Thanks Normis, do you think setting the ETSI card to 30 will damage it? I would be prepered to kill one card to find out but how long does it take to damage a card?
I’ve been pointing this out for SOO long…
I too get best coverage / preformance with the cards set to TX fixed @ 30db. With reguards to how long they last at these levels:
I have 17 Wrap 2c’s EACH with 2 8602’s all of which have been running at TX fixed @ 30db for about 5 months now..in a pretty hot enviroment (enclosed equpiment rooms) no problems.
about a week ago a set them all back to default transmit levels after people on the board started to raise red flags about 30db…
Thanks jo2jo, are you talking about ETSI cards?
etsi? they are mini PCI senao NMP-8602 cards operating at all operating at 2.4ghz.
is that what your asking?
edit: oh and what is that in your picture? is that a sat. photo of some install or something? always wondered…
Hi
ETSI is the European version of FCC in North America - specifically USA
http://www.etsi.org/
the picture is the a close up of my Powerbook G4 which I ran over with my car - by mistake! it was only one week old at the time 
what a fitting end for a mac
ooooooo…those macs run os x…which is unix..which is much closer to linux than windows..
so we can deduce that if you like MT stuff you like Macs…: )
X is NOT .. UNIX …
http://www.apuebook.com/faqs.html
yes … it’s better 
Hi Uldis… in 2,4Ghz you recommend to set this card in deafult settings or fix in 21 or 22db?
In default settings i can see in monitor the card is in 19db output, is this really or is 19+5db?
In 5Ghz, what you recommend?
Thanks and regards!
Alessio
Is there someone that have tried in the same routerboard two minipci card, one CM9 and the other senao (16dmb)? Is the CM9 impact with the same problem?
I have several Senao NMP-8602’s and they work great if if 2.4Ghz range.
If I put them into 5+GHz Range, the router boards just keep rebooting.
Doesn’t matter what the power setting id that I use.
I have the exact same issue, and I have mentioned it in the forums before.
On RB532s, NMP-8602s reboot the board continously when set to any 5ghz band. BUT they work fine when set to 2.4 ghz.
Thats strange about 5GHz booting routerboards. I have RB112s with 2.9.x and 8602s operating at 5GHz with no problems. I wasnt worried before about these new links!
I have the same issue. It seems that tx power to 12 on some, and 10 on others, will keep them from rebooting. Issue seems only to be when cards are in station mode. In ap-bridge mode the problem doesn’t seem to occurr.
This is a huge issue and we need to see it addressed ASAP!!!