ORIGINAL: Rodney
I am also an electical engineer, a long time HAM and years of testing instrumention much of it in the RF area. You are not like to get in trouble with parallel runs with wire leads regardless of length on the frequencies we use (unless we get into the gigahertz range) or are very titely coupled (less than a quarter inch). You might possibly get some microsecond periods of antenna blanking but even that is unlikely and will never last long enough on a moving object to ever even know it. Note: this does require that the ends of the wire leads are isolated electically from each other and the airframe.
Just anything to prove someone else wrong syndrome, NPD maybe. You should not give info to folks who are trying to maybe solve a problem, or are trying to prevent one. The ground plane caused by the 39 inch metal wires does not have to be coupled any particular distance, sence the movement of the plane will change it. I have experenced this several times. It can be as simple as a lot of glitches while flying, to complete solid interference, which is too bad to allow flying. I will not boast about my electronics education on here, no need.