My Phantom loses connection to the transmitter at distances of just a few feet. Sometimes just orienting the transmitter differently reconnects it at distances of 5-6 feet, but past about 10 feet there is no connection and the yellow light blinks continuously. I have a newer model with the dual antenna, have updated the firmware, recalibrated the transmitter, and put new batteries in. Very annoying to fire it up, get it in the air, and then as soon as it loses connection it flies up to 20m and then lands at the home position. At least it does that much!