2.4 GHz will not interfere with a PCM system. PCM is 72 MHz. Beyond that, a 2.4 GHz video system should not interfere with a spektrum system either, even though they are the "same" frequency range, they will be different specific frequencies. I would recommend that you power up the camera first, so the spektrum system, will see the interference, and avoid those frequencies. If anyone has actually tried this and had it completely jam their spektrum system, than I have a hard time imagining that they would work well in densely populated areas, due to cordless phones, wireless networks, and hundreds of other random crap which operate on 2.4 GHz.

Congrats on the piro. I remember my first piro, I know the feeling. I'll probably be going inverted in the next few weeks for the first time... I expect I'll be revisited by that feeling.