I was curious about the checkbox in WiFi prefs called "Conserve Power" so I did some experimenting and found out something quite interesting about the TX. First, I used an external battery pack (4 NiMH cells) to power my TX with an ammeter connected. With screen at a very low brightness and just in the Launcher the current draw was 150 milliamps. With WiFi turned ON but NOT connected to a wireless access point the current drawn was 285 mA. But when I tapped Connect and connected to my Apple wireless base station the current actually dropped a whole 110 mA to 175 mA. I naturally double checked everything and repeated this several times and confirmed that these numbers were correct. The above was all with the "Conserve Power" box checked in Prefs. I next tried the same measurements with the box UNchecked and found that the difference is that the current draw remains at the high 285 mA whether WiFi is ON and unconnected or ON and connected. Having WiFi ON and "connected" only uses 25 mA more current than having WiFi OFF. Having it ON and UNconnected is the bad power drain. Having WiFi ON, Connected and NOT downloading with Blazer draws 290 mA. Having WiFi ON, Connected and downloading with Blazer draws 345 mA. During actual downloading websites the current draw is the same regardless if Conserve Power is checked or not. The value of Conserve Power is when the WiFi IS connected but is idle, i.e. not TXing and RXing data. And if your WiFi is going to be ON it is far better that it is connected to an access point and with Conserve Power checked than it is to just be ON and not connected.