Radio waves will not travel through water or concrete. Leaves have a high water content. If you don't have LOS and tree leaves are in the way, you might as well expect impaired video link distance.Some trees that are about 70 to 80ft. A lot of wooded areas surrounding me with me standing out in the middle of an acre of open area. I'm thinking there were a few Power Lines that follow the road out there may be interfearing. Also a few random houses that may have wifi. Were somewhat limited on where we can fly here playing hopscotch between airports and DC. I may try more over the water since that is (mostly) legit to fly over. I'm just worried about it going down in water. Makes recovery much harder.