I am a newbie, just bought phantom 3 standard 3 weeks ago. I was having limited distances, best I could get was averaging 120 m. Installed the argtek 6 antenna system. Now I get average 350-400 m. That’s at any altitude. Have experimented with different configurations flats, omni etc. is it possible that something may be faulty in the drone itself? I’ve updated, downgraded, then reupdated the firmware, latest is installed now. Recalibrated the IMU, controller 3 times each. Any help greatly appreciated. Any mods for the aircraft antennas out there? I’ve scoured the posts and found nothing directly related to my issue. BTW unit was new when purchased. Thanks in advance.