GoPro model choice

[Balders]

You simply plug a cable in to the usb socket. There is no delay whatsoever, it';s live. You may be thinking of the bluetooth imagery, which does have a delay of several seconds. You can pick up the necessary cable for about 4 quid and it doubles as a charging lead if you supply it off a spare Rx channel.

Edit: Here';s is Hobbykings video only version (no charging) but it';s cheap as chips, well, cheaper in fact.
http://www.hobbyking.com/hobbyking/store/__47350__GoPro_Hero_3_to_FPV_Transmitter_Lead_200mm_UK_Warehouse_.html

[quadrix]

Thanks for the very quick response. Can you confirm that the camera can still record to the sd card whilst you are using the video. Also, does this work in all resolutions and are any special/particular settings required?
Thanks again