[redshift]

Well this probably only applies to a DX5, but run on 3 cells (~4.5V) the low battery alarm sounds. I did a rudimentary range test with a friend and the range seems to be around 4/10 mile, both on 3 AA and the full 4. Rx will not arm over 1/10 mile, but armed at close range the signal is good. I think I'll be sticking to AAs.. sigh.