Wifi Tx Power
I originally posted this in the Hyperdrive ROM thread, but I have deleted and reposted here. I think this is the proper place.
On my Asus TF101 I used the Wifi Tx Power app to lower the Tx power of the wifi. I found this to be a significant power savings. I had to install iwconfig per this thread. http://forum.xda-developers.com/show....php?t=1899272
I tried this on my rooted Note 10.1 (8013) and I seem to get nonsensical Tx power reported back from iwconfig. If I set Tx power to 4dBm it reads back as 400dBm +/-. If I try 11dBm it reports back 1100+/-. I thought that it still may be working even though the Tx power being reported doesn't make sense, but it doesn't seem to be actually adjusting the tx power. It tried this from the Wifi Tx Power app and manually from a terminal emulator.
I think this is a good way to save additional battery power when your wifi coverage is more than adequate. I appreciate any help in figuring this out.