08/29/15 - Interesting flight today - went to a new location (less than 1/4 mile from last time) with a few more trees - nothing dense (Silicon Valley) - was flying to a point 2000ft away and the R/C lost connection. Along the way the "lost signal" flashed a couple of times. The bird went into RTH mode and flew back (thankfully) and, for the rest of that flight seemed to lose signal a few times on and off, nothing longer than a second or two. I just uploaded the flight to healthydrones.com and it shows a 7.2 second signal loss 2000ft away, at a height of 300ft. It showed 117 minor signal errors during the entire flight, and GPS signal was poor. The flight on the second battery didn't lose signal, but GPS signal was also poor. The only difference (other than minor location change) was the weather - humid with low cloud (unusual for around here), temp was around 80 degrees. I'm going to test again tomorrow (I only get to fly at weekends) - I'll try a location I know works, as well as the new location to see if there's still issue. Has anyone seen erroneous R/C signal drops like this? I did nothing out of the ordinary - no hard landings and haven't dropped the R/C. Obviously I'll know more tomorrow, but wanted to get some thoughts on this. 08/30/15: UPDATE: It seems it's a little congested around the area I live - I can get around 2400ft line of sight, flying at around 300ft - after that I get a few drops in signal. There's trees on every street and it's quite a densely populated area, so that may be as far as I'm going to get. Since I'm relatively new to this I want to make sure I have practiced enough before I go out to the hills for longer flights. Anyone else live in a dense area and have distance issues?