Thank you very much I think I understand now. I was just confused because a guy on uTube was saying that he had the same system as me and he boosted the camera's signal with a repeater. He also said I can increase the cameras range by using the repeater function. I'll have to try that then. If that doesn't work i'll have to return the unit as they sell it as an outdoor system, but with my cameras outside they don't connect, The spec says they go through 2 walls 0-30 Metres. Mine has trouble going through 1 wall 10 m, maybe it's a faulty unit?
regards,
Graham