I do not see Cisco AP from my MT Router

I have a Cisco 3700 aironet as a main AP in our house.
It is configured in autonomous mode and all clients connects fine without any problem on both 2 and 5GHz.

But when I try to connect to it from a 941-2nD it see all other network, but not the Cisco one.
The MT router has none configuration at all, just factory reset without config and I then click scan in wireless menu.

Strange thing is when I do the same at my work where I have Cisco 3600 and 3700 in lightweight mode, I do see all SSID there.
So it has to be some settings on the Cisco. I have tried google. Read Cisco pages, but do not find out why MT does not see my Cisco.

Anyone who can help with this?