I'm thinking we have a vtx per truck. Instead of a full antenna maybe use some sort of stub or terminator b/c in this case we're really not looking for long distance video. Just enough to trip the timer.
Since the track lanes are only separated by 4" black plastic pipe I need to figure out how to keep the timer from tripping when the trucks are on the next lane over which is another part of the race track. I'm thinking some type of metal barrier (like used in real estate signs) along that area may block the signal enough to reduce any cross talk from the other lane.
Please share other ideas.