[Pete] has put together a relatively basic writeup on building a wireless USB tether for your DSLR. He’s generally utilizing a pair of USB wireless adapters as well as a battery pack. In his original version, he did some minor adjustment to the dock that powers the USB dongle, adding his own battery pack too. He notes that this whole job can be done without the effort he put into it, at a bit a lot more expense.  The only enhancement we believe would be great would be a much better method to bundle it to keep it out of the method while you shoot.