I sincerely doubt my Phantom is no less "Stable" as you call it, than any other one out there. I'm not saying it drifts all the time, but at times she will. And that is normal. Many on this forum will tell you the same. Drifting as you claim are attributed to natural and physical variables. Wind/breeze, loss/weak GPS/GPS variances which allow for 6-8' drift while airborne, incomplete setup, incomplete/defective compass calibration or, defective components. For example, when using a handheld GPS you will very rarely achieve an exact return to a waypoint. You'll be within 3-4' of it. Why? Because you're using the civilian GPS.
As I said, the problem that I a having is something new. You keep mentioning the parameters, such as 6 to 8 foot drift, yes, I am well aware of that and DJI also mentions it, but I have NEVER experienced the parameter extremes that you talk about. What I am saying is that I have a problem now that it makes it difficult to fly it now that I never had before.
Magnetic declination varies and changes. Using the URL I provided before, find yours. Then when doing the compass calibration point your Phantom at that point. Then do a counter-clockwise rotation for both settings. Many times when your craft drifts or wobbles as if it's in a toilet bowl flush that is the reason. You didn't achieve a good calibration.
I don't buy the magnetic declination factor at all and doesn't change and is constant for any given location. DJI doesn't address it either. Where you start you compass dance is irrelevant. The way you rotate is also irrelevant and also not addressed by DJI but in a pictoral show a clockwise rotation.
http://wiki.dji.com/en/index.php/Naza-M ... alibration
Allowing the compass too close to a car stereo speaker while getting in or out of the vehicle can cause you problems.
Deguassing the compass requires a magnet and setup to your NASAM assist software. It's best to first watch how it's done on YouTube before you cause any more damage to the compass. Or find with the NASAM it was fine.
I am not sure about having to degauss the compass at this time, I think that the MOD number is still within range but I am still researching the issue. I have not been able to find any videos related to degaussing the compass.
You might have a defective GPS receiver. If you carefully open the Phantom you'll see it on the top cover. It's a delicate ceramic and is easily cracked or broken if it was involved in a hard impact "TOP" style crash. (An inverted top over crash/impact).
I opened it up today and everything looked intact. I have had a few crashes but nothing severe with no visible damage. I don't think that is a issue at this time.
Lastly, check your motors. One might be running slower than the others causing you to be unstable. Most reliable hobby shops can check them with a tachometer.
Best of luck, and hope you figure it out.
Lonewolf[/quote]
The motors, I'm not sure. I have always had one that seemed a little tight but it never had any effect on the way it flew.
Thanks for the comments and help.
Kwas