Just flew my phantom 2 without gimbal for first time. Believe I set the compass properly, because I got two green LEDS. On takeoff, copter hovered nicely in one place despite 10 mph wind. Did not seem to search. However when I looked upward, I see the green leds solidly on..perhaps they were blinking occasionally, but then noticed two of the arms were showing solid red LEDS ...what does mean .....satellite lock?