interference

I am having a hard time keeping a video feed while flying my Spark. It often says Weak Image Transmission Signal or Interference. I have tested my flight in a wide open cotton field with nothing around and am still getting these issues. Any thoughts? Notice in the first picture the Red icon on...

Hey guys, The first time I used my spark (with rc + Sony Xperia Z3) I clicked on the quick shot and selected active track. Now whenever I select quick shot it's always on active track and there's no way to toggle out of it. Any ideas why this is happening? Also, anyone know if there is a way...