The best answer is YMMV.
There's plenty of wireless internet providers out there that employ 2.4ghz that could impair or disrupt your link. RTH kicks in while you're under a guy wire or your RTH path takes you through the guys, you can write it off.
There's also some more advanced RF theory involving harmonics where a transmitter nowhere near 2.4ghz could kill your link with minimal effort.
Just stay farther away than the guy wires are wide, and you should be okay in a majority of instances. Otherwise, make it a point to know exactly what you're getting close to, and be prepared to suck it up and not cry here if you lose your bird.