Bob, Upon further investigation I think it is a problem with the ac adapter for my laptop. I am in the process of moving everything to a different part of the house. I'am almost certain it has to do with the circuit I'm plugging it into. If the computer (laptop) is running on battery power, I have no problems. As soon as I plug it into the ac adapter I start to get these ghost signals. Lights come on at the wrong time, lights stay on, wrong lights come, etc. I will know more tonight after it gets dark enough to see the lights in question. As far as the transmitter goes I'm using a Ramsey FM 25B.