Passive RADAR discussion: (definition) detect and track objects by processing reflections from non-cooperative sources of illumination (transmitters) in the local environment, such as commercial broadcast and communications signals. Passive RADAR may mistakenly be referred to as Bistatic RADAR and may referred to many different ways (Passive Bistatic RADAR 'PBR', Passive Coherent Location 'PCL', etc.), here, this is not the case. Bistatic RADAR utilizes a Transmitter which is in control and cooperates with the receiver just like Monostatic RADAR, the transmitter and receiver are just in different locations. With Passive RADAR, the Transmitter is only one of convenience, and is not cooperating with the receiver(s). Being that powerful FM Standard Broadcast Radio Transmitters are in or near all major cities on Earth, the opportunity to take advantage of this free resource has been overlooked, until now.