RB912UAG and extra-channels

I was searching what kind of radio (model) RB912UAG have but I was unable to find
What I want to ask are extra channels future supported by RB912UAG? (channels width >20MHz)
I was trying to set channel width:30.000MHz but have error massage (channel width not supported) -or something similar
Features: Extra-channels is enable

Thanks.

p.s I have already working 30Mhz channel width link but with RB800 and R52Hn.

Atheros AR93XX

You can usually find them in the brochures.
http://i.mt.lv/routerboard/files/RB912_1373007568.pdf

Tnx cbrown
But AR9342 is CPU chip I was searching for wireless chip details or I m wrong?
from wiki
Currently only Atheros AR92xx based chips are supporting advanced channels
Does in near future AR93xx is going to support that feature or its just limited by hardware

Thanks.

Hallo Lakis,

p.s I have already working 30Mhz channel width link but with RB800 and R52Hn.

some quick question
a) when you say 30MHz, it means that if you enable the below control the link works 30/60Mhz below?
b) did you see troughput improvment ? how much?
what about long distance link like 40km?

thanks in advance
Massimo