It is probable an antenna problem or a channel problem. I go out regularly to 1k and occasionally to almost 2k. I don't have any issues. I always use auto channel selection and make sure that my Tx antennas are perpendicular to the ground.
Have a look on the back of your iPad. At the very bottom there is a whole lot of print. If you see A1432 listed there then your iPad has the A5 processor. It needs to have the A7 processor which is found in mini 2 or 3. I know this because I got my Inspire last Friday and by Saturday morning had already discovered I needed to purchase a new iPad too. I now have the Mini 3 which works perfectly.