Hay guys can you help with sum advise i want to use a wifi camera in a portable pack that can be used from 100m to up to 1km was thinking of using a security wifi camera that can connect direct to my phone or tablet putting it in a good box with a 12v battery and adding a 25dbi directional box antenna would the 25dbi antena be able to push the signal out to 1km it will be open line of sight no obstructions need to try make the whole thing in a small portable pack