Captain Obvious said:Again, that's compass interference and has absolutely nothing to do GPS.
again, it doesn't really matter which one it is if the Phantom won't fly. We can do this all day... nevermind no we can't I'll get bored. wait, I already am.
you were right the first time... no need to keep re-hashing unless you just love hearing yourself talk. the point is you can't boot up and take off properly from those types of surfaces. we're already way off the topic of this conversation.