I also have the DX7 system and use it frequently. I am in the process of replacing all of my 72 MHz receives with the DX7 7 channel receiver (I believe it's the AR7000 RX). I am totally pleased with it.

I do use a 1200 mah 6 volt battery in all receiver applications with voltwatch, but that's not the fault of the radio, that's just a personal choice.

Flawless performance as far as I am concerned.

CGr