Dave Zucal posted:Thanks Adrian. That PDF is helpful in grasping how it all works. I would also tend to think another possible reason that lighted passenger cars cause us signal problems could be from the fact a mini loop is created when the two hot wires are connected together within the car or should we not be concerned with that loop?
Uh a good rule of thumb is 1/10 lambda is where the wave propagation behavior start to appear. DCS is a 3 MHz square-wave so that’s like 10MHz bandwidth with harmonics considered. That’s a 30 meter wavelength so 3 meters or about 9ft diameter is where the loops would start to have an effect. Seemingly a lot bigger than the passenger car.
