Tempox

I have 4 AR7000 various configurations of batteries, some of lipo Fromeco, other NiMH, servos use low consumption, and my Dx7 continually loses connection with the receiver, if I have to perform again binding, every time I disconnect the switch . 2 days ago I lost a plane that was totally uncontrolled, about 200m from me, the plane was a petrol with an AR7000 with 6v battery fully charged and this device installed http://www.spektrumrc.com/Products/Default. aspx? P = SPM1600
He wrote 4 post explaining my problems to Spektrum and I have never responded, I asked where repair information from the radio in Europe.
Thanks lords Spektrum by giving good support as a client.[:@]