Ran into a little, well, large problem with my RF-V16 tracker. Thought I would advise anyone else you may be looking for your tracker and not your quad. I attached mine on the left front bottom of the landing leg. I used the small hole in the corner to run a small zip tie through. I already had a spot of velcro on the bottom of the tracker when it was in a different location. So I also stuck a spot of velcro on the leg. So the tracker was attached in two places. Well, it was a good thing it was. Today I picked up the quad and the tracker was only on the velcro. So with a close investigation I found the small "pin" that holds the tie and tracker together was broken off. If you look at the picture below, you can see the little "pin" was attached to only one part of the tracker. The low quality plastic from China broke off and only the velcro was holding it on the quad. So if you have yours attached through that hole, better come up with a second way to keep it in place. Or you may be tracking your tracker and not your quad.