Put a high rise building between your controller and the drone and you'll lose signal.
Yes ... that's the way to get the greatest range.
That's unlikely.
Don't aren't wide ??
You need a clear, unobstructed line of sight between your controller and the drone.
Radio waves don't travel through earth and rock.
Block signal and you will lose signal.
No need to guess, DJI spell it out for you in the...
Classes and certifications are of little value to clients, other than as proof of training. What they are really interested in is a portfolio of work and references from existing happy clients.
I would first very carefully research your local...
If you post your flight data we can see what was happening and have a good chance of identifying the cause of your incident and helping to prevent similar things in future.
Without the data, you'll only get people guessing and most aren't going...
Your radio signal won't go through high ground if that is between you and the drone.
A few tree branches won't make much difference to the signal, but if there are enough tree branches between the controller and drone, it will affect signal...