I've recently bought a DX3R plus four 'ORX 3 channel ground' receivers. I've got it all fitted into my Revo 3.3 and it works great. Brand new battery pack in the Rx, fully charged plus healthy batteries in the Tx showing 4.9 volts.
Yesterday I took my Revo out to a local field for a bash, getting it re-tuned etc, about 10 minutes in I noticed I was getting some throttle and steering lag, then it lost communication all together. I switched off the Rx and back on, it connected back up straight away and was fine, until a few minutes later I went WOT then it lost it again, it didn't even go into failsafe mode, thankfully the throttle return spring allowed it to coast to a stop. I decided to call it a day at that point, thinking the Rx battery much have been low.
So charged Rx battery up this morning and went out again this afternoon, exactly the same issue. If I stick at around 30-50% throttle and cruise round it will be pefectly fine. It seems as soon as I hit WOT it just loses it.
I'm going to try another receiver next, but any suggestions? I don't like the idea of my Revo running away at WOT that's for sure!