RE: HD Possible???
Wireless HD does exist but not affordably and not small enough and compatible for the DF. I think DFI tried wireless HD with 802.11 but never released it because like GeoffBrown said, the data stream was just too demanding. Any wireless signal is going to be susceptible to RF hits so on board recording with an HD camera is the best way to retain HD quality while using a live video feed as a framing guide.