I flashed DD-WRT on my C9(US)v1 High Power router.

This is the one with 900mW WLAN strength. Clearly I am interested what are the correct settings in DD-WRT with this device.

Does anyone use the same combination of Hardware and DD-WRT?

When I am checking TX-Power is set to AUTO and when I change this to manual I see TX-Power is 71. 

In brackets it is described that I could use between 1 and 1000mW.

What is the correct setting? Does 71 means mW?

Should I know just use the 900mW for this device?

Thanks a lot