Strange "blips" when using FOB

[theuberk]

Hi,

I just wanted to know if there is some sort of quick cure for the field being inverted. These blips and other strange things that seem like they are coming from the same source as these blips are happening periodically. We need to minimize this as much as possible as it is resulting in skewed data being collected. So, is there anything we can do about this without having to move to optical tracking (not in our budget)?